YA
Uploaded byYusuf Ayuba
PPTX, PDF54 views

modul-python-all.pptx

The document discusses Python programming language. It provides an overview of what Python is, what it can be used for, and why it is a popular language. Specifically, it notes that Python was created by Guido van Rossum and released in 1991. It is used for web development, software development, mathematics, and system scripting. The document then covers Python syntax, basic data types, operators, decision making and control flow statements like if/else and loops.

Embed presentation

Download to read offline
PYTHON PROGRAMMING (1) Yusuf Ayuba
What is Python Python is a popular programming language. It was created by Guido van Rossum, and released in 1991. It is used for: • web development (server-side), • software development, • mathematics, • system scripting.
What can Python do • Python can be used on a server to create web applications. • Python can be used alongside software to create workflows. • Python can connect to database systems. It can also read and modify files. • Python can be used to handle big data and perform complex mathematics. • Python can be used for rapid prototyping, or for production-ready software development.
Why Python • Python works on different platforms (Windows, Mac, Linux, Raspberry Pi, etc). • Python has a simple syntax similar to the English language. • Python has syntax that allows developers to write programs with fewer lines than some other programming languages. • Python runs on an interpreter system, meaning that code can be executed as soon as it is written. This means that prototyping can be very quick. • Python can be treated in a procedural way, an object- oriented way or a functional way.
Python Syntax compared to other programming languages • Python was designed for readability, and has some similarities to the English language with influence from mathematics. • Python uses new lines to complete a command, as opposed to other programming languages which often use semicolons or parentheses. • Python relies on indentation, using whitespace, to define scope; such as the scope of loops, functions and classes. Other programming languages often use curly- brackets for this purpose.
Python Syntax • Python is an interpreted programming language, this means that as a developer you write Python (.py) files in a text editor and then put those files into the python interpreter to be executed • Python syntax can be executed by writing directly in the Command Line • Or by creating a python file on the server, using the .py file extension, and running it in the Command Line
Syntax or
Identation • Indentation refers to the spaces at the beginning of a code line. • Where in other programming languages the indentation in code is for readability only, the indentation in Python is very important. • Python uses indentation to indicate a block of code and will error if you skip the indentation
Python Identation not
Comments • Comments can be used to explain Python code. • Comments can be used to make the code more readable. • Comments can be used to prevent execution when testing code. • Comments starts with a #, and Python will ignore them • Comments can be placed at the end of a line, and Python will ignore the rest of the line • A comment does not have to be text that explains the code, it can also be used to prevent Python from executing code
Comments or or
Variables A variable can have a short name (like x and y) or a more descriptive name (age, carname, total_volume). Rules for Python variables: A variable name must start with a letter or the underscore character • A variable name cannot start with a number • A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9, and _ ) • Variable names are case-sensitive (age, Age and AGE are three different variables)
Variables not
Variables (Assign Multiple Values) • Python allows you to assign values to multiple variables in one line • Python can assign the same value to multiple variables in one line • If you have a collection of values in a list, tuple etc. Python allows you to extract the values into variables. This is called unpacking
Multiple value assign values to multiple variables in one line same value to multiple variables in one line Unpack a Collection
Global and Local Variables • Variables that are created outside of a function (as in all of the examples above) are known as global variables. • Global variables can be used by everyone, both inside of functions and outside. • Variable created with the same name inside a function, this variable will be local, and can only be used inside the function. • The global variable with the same name will remain as it was, global and with the original value.
Data Types Category Types Text Type str Numeric Types int, float, complex Sequence Types list, tuple, range Mapping Type dict Set Types set, frozenset Boolean Type bool Binary Types bytes, bytearray, memoryview None Type NoneType
Setting The Data Type In Python, the data type is set when you assign a value to a variable Example Data Type x = "Hello World" str x = 20 int x = 20.5 float x = 1j complex x = ["apple", "banana", "cherry"] list x = ("apple", "banana", "cherry") tuple x = range(6) range x = {"name" : "John", "age" : 36} dict x = {"apple", "banana", "cherry"} set
Setting The Data Type Example Data Type x = frozenset({"apple", "banana", "cherry"}) frozenset x = True bool x = b"Hello" bytes x = bytearray(5) bytearray x = memoryview(bytes(5)) memoryview x = None NoneType
Setting the Spesific Data Type Example Data Type x = str("Hello World”) str x = int(20) int x = float(20.5) float x = complex(1j) complex x = list(("apple", "banana", "cherry”)) list x = tuple(("apple", "banana", "cherry")) tuple x = range(6) range x = dict(name="John", age=36) dict x = set(("apple", "banana", "cherry")) set
Setting the Spesific Data Type Example Data Type x = frozenset(("apple", "banana", "cherry")) frozenset x = bool(5) bool x = bytes(5) bytes x = bytearray(5) bytearray x = memoryview(bytes(5)) memoryview
Praktikum • Mencoba menjalankan syntax python menggunakan Command Line • Mencoba menjalankan python menggunakan file (.py) • Mencoba Comments • Mencoba identation • Mencoba variables • Mencoba berbagai tipe data
PEMROGRAMAN PYTHON (2) Yusuf Ayuba
Basic Operators Python language supports the following types of operators • Arithmetic Operators • Comparison (Relational) Operators • Assignment Operators • Logical Operators • Bitwise Operators • Membership Operators • Identity Operators
Arithmetic Operators Operator Description Example + Addition Adds values on either side of the operator. a + b = 31 - Subtraction Subtracts right hand operand from left hand operand. a – b = -11 • Multiplication Multiplies values on either side of the operator a * b = 210 / Division Divides left hand operand by right hand operand b / a = 2.1 Assume variable a = 10 and variable b = 21
Arithmetic Operators (2) Operator Description Example % Modulus Divides left hand operand by right hand operand and returns remainder b % a = 1 ** Exponent Performs exponential (power) calculation on operators a**b =10 to the power 20 // Floor Division - The division of operands where the result is the quotient in which the digits after the decimal point are removed. 9//2 = 4 and 9.0//2.0 = 4.0 Assume variable a = 10 and variable b = 21
Comparison Operators Operator Description Example == If the values of two operands are equal, then the condition becomes true. (a == b) is not true. != If values of two operands are not equal, then condition becomes true. (a!= b) is true. > If the value of left operand is greater than the value of right operand, then condition becomes true. (a > b) is not true. Assume variable a = 10 and variable b = 21
Comparison Operators (2) Operator Description Example < If the value of left operand is less than the value of right operand, then condition becomes true. (a < b) is true. >= If the value of left operand is greater than or equal to the value of right operand, then condition becomes true. (a >= b) is not true. <= If the value of left operand is less than or equal to the value of right operand, then condition becomes true. (a <= b) is true. Assume variable a = 10 and variable b = 21
Assignment Operators Operator Description Example = Assigns values from right side operands to left side operand c = a + b assigns value of a + b into c += Add AND It adds right operand to the left operand and assign the result to left operand c += a is equivalent to c = c + a -= Subtract AND It subtracts right operand from the left operand and assign the result to left operand c -= a is equivalent to c = c - a
Assignment Operators (2) Operator Description Example *= Multiply AND It multiplies right operand with the left operand and assign the result to left Operand c *= a is equivalent to c = c * a /= Divide AND It divides left operand with the right operand and assign the result to left Operand c /= a is equivalent to c = c / ac /= a is equivalent to c = c / a %= Modulus AND It takes modulus using two operands and assign the result to left operand c %= a is equivalent to c = c % a
Assignment Operators (3) Operator Description Example **= Exponent AND Performs exponential (power) calculation on operators and assign value to the left Operand c **= a is equivalent to c = c ** a //= Floor Division It performs floor division on operators and assign value to the left operand c //= a is equivalent to c = c // a
Bitwise Operators Operator Description Example & Binary AND Operator copies a bit to the result, if it exists in both operands (a & b) (means 0000 1100) | Binary OR It copies a bit, if it exists in either operand. (a | b) = 61 (means 0011 1101) ^ Binary XOR It copies the bit, if it is set in one operand but not both. (a ^ b) = 49 (means 0011 0001) Assume variable a = 60 and variable b = 13. Which is in binary a = 0011 1100, b = 0000 1101
Bitwise Operators (2) Operator Description Example ~ Binary Ones Complement It is unary and has the effect of 'flipping’ bits. (~a ) = -61 (means 1100 0011 in 2’s complement form due to a signed binary number. << Binary Left Shift The left operand’ s value is moved left by the number of bits specified by the right operand. a << = 240 (means 1111 0000) >> Binary Right Shift The left operand’ s value is moved right by the number of bits specified by the right operand. a >> = 15 (means 0000 1111) Assume variable a = 60 and variable b = 13. Which is in binary a = 0011 1100, b = 0000 1101
Logical Operators Operator Description Example and Logical AND If both the operands are true then condition becomes true. (a and b) is False. or Logical OR If any of the two operands are non-zero then condition becomes true. (a or b) is True. not Logical NOT Used to reverse the logical state of its operand. Not(a and b) is True. Assume variable a = True and variable b = False
Membership Operators Operator Description Example In Evaluates to true, if it finds a variable in the specified sequence and false otherwise. x in y, here in results in a 1 if x is a member of sequence y. not in Evaluates to true, if it does not find a variable in the specified sequence and false otherwise. x not in y, here not in results in a 1 if x is not a member of sequence y. Python’s membership operators test for membership in a sequence, such as strings, lists, or tuples
Identity Operators Operator Description Example is Evaluates to true if the variables on either side of the operator point to the same object and false otherwise. x is y, here is results in 1 if id(x) equals id(y). is not Evaluates to false if the variables on either side of the operator point to the same object and true otherwise. x is not y, here is not results in 1 if id(x) is not equal to id(y). Identity operators compare the memory locations of two objects.
Operators Precedence Operator Description ** Exponentiation (raise to the power) ~ + - Ccomplement, unary plus and minus (method names for the last two are +@ and -@) * / % // Multiply, divide, modulo and floor division + - Addition and subtraction >> << Right and left bitwise shift & Bitwise 'AND' ^ | Bitwise exclusive `OR' and regular `OR' <= < > >= Comparison operators <> == != Equality operators Operator precedence affects the evaluation of an an expression.
Operators Precedence Operator Description = %= /= //= -= += *= **= Assignment operators is is not Identity operators in not in Membership operators not or and Logical operators Operator precedence affects the evaluation of an an expression.
Yusuf Ayuba PEMROGRAMAN PYTHON (3)
Decision Making • Decision-making is the anticipation of conditions occurring during the execution of a program and specified actions taken according to the conditions. • Decision structures evaluate multiple expressions, which produce TRUE or FALSE as the outcome. • Python programming language assumes any non-zero and non-null values as TRUE, and any zero or null values as FALSE value.
Decision Making Statements Statement Description if statements An if statement consists of a Boolean expression followed by one or more statements. if...else statements An if statement can be followed by an optional else statement, which executes when the Boolean expression is FALSE. nested if statements You can use one if or else if statement inside another if or else if statement(s).
IF Statement Syntax Flow Diagram
Example
IF...ELIF...ELSE Statements Syntax if…else Flow Diagram An else statement can be combined with an if statement. An else statement contains a block of code that executes if the conditional expression in the if statement resolves to 0 or a
Example (IF…ELSE)
The elif statement • The elif statement allows you to check multiple expressions for TRUE and execute a block of code as soon as one of the conditions evaluates to TRUE. • Similar to the else, the elif statement is optional. However, unlike else, for which there can be at the most one statement, there can be an arbitrary number of elif statements following an if.
The elif statement (2) Syntax Flow Diagram
Nested IF Statements There may be a situation when you want to check for another condition after a condition resolves to true. In such a s you can use the nested if construct. In a nested if construct, you can have an if...elif...else construct inside another if...elif...else construct.
Example
Single Statement Suites If the suite of an if clause consists only of a single line, it may go on the same line as the header statement.
PEMROGRAMAN PYTHON (4) Yusuf Ayuba
Loops • In general, statements are executed sequentially- The first statement in a function is executed first, followed by the second, and so on. There may be a situation when you need to execute a block of code several number of times. • Programming languages provide various control structures that allow more complicated execution paths. • A loop statement allows us to execute a statement or group of statements multiple times.
Types of loops Loop Type Description while loop Repeats a statement or group of statements while a given condition is TRUE. It tests the condition before executing the loop body. for loop Executes a sequence of statements multiple times and abbreviates the code that manages the loop variable. nested loops You can use one or more loop inside any another while, or for loop.
Loop Statements Syntax Flow Diagram A while loop statement in Python programming language repeatedly executes a target statement as long as a given condition is true.
Example
The Infinite Loop An infinite loop might be useful in client/server programming where the server needs to run continuously so that client programs can communicate with it as and when required.
Else Statement with Loops • If the else statement is used with a for loop, the else statement is executed when the loop has exhausted iterating the list. • If the else statement is used with a while loop, the else statement is executed when the condition becomes false.
for Loop Statements Syntax Flow Diagram The for statement in Python has the ability to iterate over the items of any sequence, such as a list or a string.
Example
Iterating by Sequence Index
else Statement with Loops • If the else statement is used with a for loop, the else block is executed only if for loops terminates normally (and not by encountering break statement). • If the else statement is used with a while loop, the else statement is executed when the condition becomes false.
Example
Nested Loop Syntax
Example
Loop Control Statements The Loop control statements change the execution from its normal sequence. When the execution leaves a scope, all automatic objects that were created in that scope are destroyed. Control Statement Description break statement Terminates the loop statement and transfers execution to the statement immediately following the loop. continue statement Causes the loop to skip the remainder of its body and immediately retest its condition prior to reiterating. pass statement The pass statement in Python is used when a statement is required syntactically but you do not want any command or code to
break Statements Syntax Flow Diagram The break statement is used for premature termination of the current loop.
Example
continue Statements Syntax Flow Diagram The continue statement in Python returns the control to the beginning of the current loop. When encountered, the loop starts next iteration without executing the remaining statements in the current
Example
pass Statements Syntax It is used when a statement is required syntactically but you do not want any command or code to execute. The pass statement is a null operation; nothing happens when it executes. The pass statement is also useful in places where your code will eventually go, but has not been written yet i.e. in stubs).
Example
PEMROGRAMAN PYTHON (5) Yusuf Ayuba
Numbers Python supports different numerical types- • int (signed integers): They are often called just integers or ints. They are positive or negative whole numbers with no decimal point. Integers in Python 3 are of unlimited size. Python 2 has two integer types - int and long. There is no 'long integer' in Python 3 anymore. • float (floating point real values): Also called floats, they represent real numbers and are written with a decimal point dividing the integer and the fractional parts. Floats may also be in scientific notation, with E or e indicating the power of 10 (2.5e2 = 2.5 x 102 = 250). • complex (complex numbers): are of the form a + bJ, where a and b are floats and J (or j) represents the square root of -1 (which is an imaginary number). The real part of the number is a, and the imaginary part is b. Complex numbers are not used much in Python programming.
Example
Number Type Conversion • Type int(x) to convert x to a plain integer. • Type long(x) to convert x to a long integer. • Type float(x) to convert x to a floating-point number. • Type complex(x) to convert x to a complex number with real part x and imaginary part zero. • Type complex(x, y) to convert x and y to a complex number with real part x and imaginary part y. x and y are numeric expressions.
Mathematic al Functions
abs() Method
Example
ceil() Method
Example
exp() Method
Example
fabs() Method
Example
floor() Method
Example
log() Method
Example
log10() Method
Example
max() Method
Example
min() Method
Example
modf() Method
Example
sqrt() Method
Example
End of Slides

More Related Content

PPTX
Learn about Python power point presentation
byomsumukh85
 
PPTX
Basic concept of Python.pptx includes design tool, identifier, variables.
bysupriyasarkar38
 
PPTX
Python.pptx
byAnkita Shirke
 
PPTX
Python Basics by Akanksha Bali
byAkanksha Bali
 
PDF
Python for data science by www.dmdiploma.com
byShwetaAggarwal56
 
PPTX
Lecture 1 .
bySwatiHans10
 
PPTX
Python
bySuman Chandra
 
PDF
Introduction to Python
byMohammed Sikander
 
Learn about Python power point presentation
byomsumukh85
 
Basic concept of Python.pptx includes design tool, identifier, variables.
bysupriyasarkar38
 
Python.pptx
byAnkita Shirke
 
Python Basics by Akanksha Bali
byAkanksha Bali
 
Python for data science by www.dmdiploma.com
byShwetaAggarwal56
 
Lecture 1 .
bySwatiHans10
 
Python
bySuman Chandra
 
Introduction to Python
byMohammed Sikander
 

Similar to modul-python-all.pptx

PDF
1_Python Basics.pdf
byMaheshGour5
 
PPTX
PM Unit - I of python MDM PPT - Copy.pptx
bysayalisd
 
PPTX
Welcome to python workshop
byMukul Kirti Verma
 
PDF
Python basic programing language for automation
byDanialHabibi2
 
PPTX
Python
bySangita Panchal
 
PPTX
Data_Types_and_Math_Expressions_Python.pptx
byOlaoluwaBabalola1
 
PPT
Python programming
bysaroja20
 
PPTX
Python Programming for basic beginners.pptx
bymohitesoham12
 
PPTX
03 Variables - Chang.pptx
byDileep804402
 
PPTX
python_module_.................................................................
byVaibhavSrivastav52
 
PPTX
Unit 2 MDM.pptx.........................
bybhaktikundhare
 
PDF
computer science CLASS 11 AND 12 SYLLABUS.pdf
bySomnathSaha63
 
PPTX
“Python” or “CPython” is written in C/C+
byMukeshpanigrahy1
 
PPTX
Review old Pygame made using python programming.pptx
byithepacer
 
PPTX
Introduction to python programming ( part-1)
byZiyauddin Shaik
 
PPTX
Python Operators.pptx
byM Vishnuvardhan Reddy
 
PPTX
Python Basics
byPooja B S
 
PPTX
PYTHON
byRidaZaman1
 
PPTX
PROGRAMMING-QUARTER-2-PYTHON.pptxnsnsndn
byalexaqt551
 
PPTX
1664611760basics-of-python-for begainer1 (3).pptx
bykrsonupandey92
 
1_Python Basics.pdf
byMaheshGour5
 
PM Unit - I of python MDM PPT - Copy.pptx
bysayalisd
 
Welcome to python workshop
byMukul Kirti Verma
 
Python basic programing language for automation
byDanialHabibi2
 
Python
bySangita Panchal
 
Data_Types_and_Math_Expressions_Python.pptx
byOlaoluwaBabalola1
 
Python programming
bysaroja20
 
Python Programming for basic beginners.pptx
bymohitesoham12
 
03 Variables - Chang.pptx
byDileep804402
 
python_module_.................................................................
byVaibhavSrivastav52
 
Unit 2 MDM.pptx.........................
bybhaktikundhare
 
computer science CLASS 11 AND 12 SYLLABUS.pdf
bySomnathSaha63
 
“Python” or “CPython” is written in C/C+
byMukeshpanigrahy1
 
Review old Pygame made using python programming.pptx
byithepacer
 
Introduction to python programming ( part-1)
byZiyauddin Shaik
 
Python Operators.pptx
byM Vishnuvardhan Reddy
 
Python Basics
byPooja B S
 
PYTHON
byRidaZaman1
 
PROGRAMMING-QUARTER-2-PYTHON.pptxnsnsndn
byalexaqt551
 
1664611760basics-of-python-for begainer1 (3).pptx
bykrsonupandey92
 

Recently uploaded

PPTX
Planning Assessment for Outcome-based Education
byAdri Jovin
 
PPTX
Repeat Orders_ Use Odoo Blanket Agreement
byCeline George
 
PDF
International Men's Day Event: Breaking the Silence: Embracing Vulnerability ...
byAssociation for Project Management
 
PDF
IMANI Africa files RTI request seeking full disclosure on 2026 SIM registrati...
bynservice241
 
PPTX
TAMIS & TEMS - HOW, WHY and THE STEPS IN PROCTOLOGY
byJohn Thanakumar
 
PPTX
How to Create Lead_Opportunity From Odoo 18 Website
byCeline George
 
PPTX
Accounting Skills Paper-II (Registers of PACs and Credit Co-operative Societies)
byDr. Sushil Bansode
 
PPTX
Steve Hale - Developing Elite Young Goalkeepers 2024.pptx
bypjmfd
 
PPTX
Pig- piggy bank in Big Data Analytics.ppt.pptx
byVarshini M
 
PPTX
How to Configure Push & Pull Rule in Odoo 18 Inventory
byCeline George
 
PPTX
4 G8_Q3_L4 (Evaluating opinion editorials for textual evidence and quality).pptx
byNorafeSahagun
 
PPTX
10-12-2025 Francois Staring How can Researchers and Initial Teacher Educators...
byEduSkills OECD
 
PDF
Analyzing the data of your initial survey
byThelma Villaflores
 
PPTX
Access partner report in Odoo 18.2 _ Odoo 19
byCeline George
 
PDF
Micro Economics for class 12 and class 11
bysurajbajaj4116
 
PDF
Multiple Myeloma , definition, etiology, PP, CM , DE and management
byNisha Borsa
 
PPTX
3 G8_Q3_L3_ (Cartoon as Representation in Opinion Editorial Article).pptx
byNorafeSahagun
 
PPTX
Growth & Development MILESTONES (ADOLESCENTS ).pptx
byAneetaSharma15
 
PPTX
PURPOSIVE SAMPLING IN EDUCATIONAL RESEARCH RACHITHRA RK.pptx
byssuser047b711
 
PDF
Scalable-MADDPG-Based Cooperative Target Invasion for a Multi-USV System.pdf
byMan_Ebook
 
Planning Assessment for Outcome-based Education
byAdri Jovin
 
Repeat Orders_ Use Odoo Blanket Agreement
byCeline George
 
International Men's Day Event: Breaking the Silence: Embracing Vulnerability ...
byAssociation for Project Management
 
IMANI Africa files RTI request seeking full disclosure on 2026 SIM registrati...
bynservice241
 
TAMIS & TEMS - HOW, WHY and THE STEPS IN PROCTOLOGY
byJohn Thanakumar
 
How to Create Lead_Opportunity From Odoo 18 Website
byCeline George
 
Accounting Skills Paper-II (Registers of PACs and Credit Co-operative Societies)
byDr. Sushil Bansode
 
Steve Hale - Developing Elite Young Goalkeepers 2024.pptx
bypjmfd
 
Pig- piggy bank in Big Data Analytics.ppt.pptx
byVarshini M
 
How to Configure Push & Pull Rule in Odoo 18 Inventory
byCeline George
 
4 G8_Q3_L4 (Evaluating opinion editorials for textual evidence and quality).pptx
byNorafeSahagun
 
10-12-2025 Francois Staring How can Researchers and Initial Teacher Educators...
byEduSkills OECD
 
Analyzing the data of your initial survey
byThelma Villaflores
 
Access partner report in Odoo 18.2 _ Odoo 19
byCeline George
 
Micro Economics for class 12 and class 11
bysurajbajaj4116
 
Multiple Myeloma , definition, etiology, PP, CM , DE and management
byNisha Borsa
 
3 G8_Q3_L3_ (Cartoon as Representation in Opinion Editorial Article).pptx
byNorafeSahagun
 
Growth & Development MILESTONES (ADOLESCENTS ).pptx
byAneetaSharma15
 
PURPOSIVE SAMPLING IN EDUCATIONAL RESEARCH RACHITHRA RK.pptx
byssuser047b711
 
Scalable-MADDPG-Based Cooperative Target Invasion for a Multi-USV System.pdf
byMan_Ebook
 

modul-python-all.pptx

  • 1.
  • 2.
    What is Python Pythonis a popular programming language. It was created by Guido van Rossum, and released in 1991. It is used for: • web development (server-side), • software development, • mathematics, • system scripting.
  • 3.
    What can Pythondo • Python can be used on a server to create web applications. • Python can be used alongside software to create workflows. • Python can connect to database systems. It can also read and modify files. • Python can be used to handle big data and perform complex mathematics. • Python can be used for rapid prototyping, or for production-ready software development.
  • 4.
    Why Python • Pythonworks on different platforms (Windows, Mac, Linux, Raspberry Pi, etc). • Python has a simple syntax similar to the English language. • Python has syntax that allows developers to write programs with fewer lines than some other programming languages. • Python runs on an interpreter system, meaning that code can be executed as soon as it is written. This means that prototyping can be very quick. • Python can be treated in a procedural way, an object- oriented way or a functional way.
  • 5.
    Python Syntax comparedto other programming languages • Python was designed for readability, and has some similarities to the English language with influence from mathematics. • Python uses new lines to complete a command, as opposed to other programming languages which often use semicolons or parentheses. • Python relies on indentation, using whitespace, to define scope; such as the scope of loops, functions and classes. Other programming languages often use curly- brackets for this purpose.
  • 6.
    Python Syntax • Pythonis an interpreted programming language, this means that as a developer you write Python (.py) files in a text editor and then put those files into the python interpreter to be executed • Python syntax can be executed by writing directly in the Command Line • Or by creating a python file on the server, using the .py file extension, and running it in the Command Line
  • 7.
  • 8.
    Identation • Indentation refersto the spaces at the beginning of a code line. • Where in other programming languages the indentation in code is for readability only, the indentation in Python is very important. • Python uses indentation to indicate a block of code and will error if you skip the indentation
  • 9.
  • 10.
    Comments • Comments canbe used to explain Python code. • Comments can be used to make the code more readable. • Comments can be used to prevent execution when testing code. • Comments starts with a #, and Python will ignore them • Comments can be placed at the end of a line, and Python will ignore the rest of the line • A comment does not have to be text that explains the code, it can also be used to prevent Python from executing code
  • 11.
  • 12.
    Variables A variable canhave a short name (like x and y) or a more descriptive name (age, carname, total_volume). Rules for Python variables: A variable name must start with a letter or the underscore character • A variable name cannot start with a number • A variable name can only contain alpha-numeric characters and underscores (A-z, 0-9, and _ ) • Variable names are case-sensitive (age, Age and AGE are three different variables)
  • 13.
  • 14.
    Variables (Assign MultipleValues) • Python allows you to assign values to multiple variables in one line • Python can assign the same value to multiple variables in one line • If you have a collection of values in a list, tuple etc. Python allows you to extract the values into variables. This is called unpacking
  • 15.
    Multiple value assign valuesto multiple variables in one line same value to multiple variables in one line Unpack a Collection
  • 16.
    Global and LocalVariables • Variables that are created outside of a function (as in all of the examples above) are known as global variables. • Global variables can be used by everyone, both inside of functions and outside. • Variable created with the same name inside a function, this variable will be local, and can only be used inside the function. • The global variable with the same name will remain as it was, global and with the original value.
  • 17.
    Data Types Category Types TextType str Numeric Types int, float, complex Sequence Types list, tuple, range Mapping Type dict Set Types set, frozenset Boolean Type bool Binary Types bytes, bytearray, memoryview None Type NoneType
  • 18.
    Setting The DataType In Python, the data type is set when you assign a value to a variable Example Data Type x = "Hello World" str x = 20 int x = 20.5 float x = 1j complex x = ["apple", "banana", "cherry"] list x = ("apple", "banana", "cherry") tuple x = range(6) range x = {"name" : "John", "age" : 36} dict x = {"apple", "banana", "cherry"} set
  • 19.
    Setting The DataType Example Data Type x = frozenset({"apple", "banana", "cherry"}) frozenset x = True bool x = b"Hello" bytes x = bytearray(5) bytearray x = memoryview(bytes(5)) memoryview x = None NoneType
  • 20.
    Setting the SpesificData Type Example Data Type x = str("Hello World”) str x = int(20) int x = float(20.5) float x = complex(1j) complex x = list(("apple", "banana", "cherry”)) list x = tuple(("apple", "banana", "cherry")) tuple x = range(6) range x = dict(name="John", age=36) dict x = set(("apple", "banana", "cherry")) set
  • 21.
    Setting the SpesificData Type Example Data Type x = frozenset(("apple", "banana", "cherry")) frozenset x = bool(5) bool x = bytes(5) bytes x = bytearray(5) bytearray x = memoryview(bytes(5)) memoryview
  • 22.
    Praktikum • Mencoba menjalankansyntax python menggunakan Command Line • Mencoba menjalankan python menggunakan file (.py) • Mencoba Comments • Mencoba identation • Mencoba variables • Mencoba berbagai tipe data
  • 23.
  • 24.
    Basic Operators Python languagesupports the following types of operators • Arithmetic Operators • Comparison (Relational) Operators • Assignment Operators • Logical Operators • Bitwise Operators • Membership Operators • Identity Operators
  • 25.
    Arithmetic Operators Operator DescriptionExample + Addition Adds values on either side of the operator. a + b = 31 - Subtraction Subtracts right hand operand from left hand operand. a – b = -11 • Multiplication Multiplies values on either side of the operator a * b = 210 / Division Divides left hand operand by right hand operand b / a = 2.1 Assume variable a = 10 and variable b = 21
  • 26.
    Arithmetic Operators (2) OperatorDescription Example % Modulus Divides left hand operand by right hand operand and returns remainder b % a = 1 ** Exponent Performs exponential (power) calculation on operators a**b =10 to the power 20 // Floor Division - The division of operands where the result is the quotient in which the digits after the decimal point are removed. 9//2 = 4 and 9.0//2.0 = 4.0 Assume variable a = 10 and variable b = 21
  • 27.
    Comparison Operators Operator DescriptionExample == If the values of two operands are equal, then the condition becomes true. (a == b) is not true. != If values of two operands are not equal, then condition becomes true. (a!= b) is true. > If the value of left operand is greater than the value of right operand, then condition becomes true. (a > b) is not true. Assume variable a = 10 and variable b = 21
  • 28.
    Comparison Operators (2) OperatorDescription Example < If the value of left operand is less than the value of right operand, then condition becomes true. (a < b) is true. >= If the value of left operand is greater than or equal to the value of right operand, then condition becomes true. (a >= b) is not true. <= If the value of left operand is less than or equal to the value of right operand, then condition becomes true. (a <= b) is true. Assume variable a = 10 and variable b = 21
  • 29.
    Assignment Operators Operator DescriptionExample = Assigns values from right side operands to left side operand c = a + b assigns value of a + b into c += Add AND It adds right operand to the left operand and assign the result to left operand c += a is equivalent to c = c + a -= Subtract AND It subtracts right operand from the left operand and assign the result to left operand c -= a is equivalent to c = c - a
  • 30.
    Assignment Operators (2) OperatorDescription Example *= Multiply AND It multiplies right operand with the left operand and assign the result to left Operand c *= a is equivalent to c = c * a /= Divide AND It divides left operand with the right operand and assign the result to left Operand c /= a is equivalent to c = c / ac /= a is equivalent to c = c / a %= Modulus AND It takes modulus using two operands and assign the result to left operand c %= a is equivalent to c = c % a
  • 31.
    Assignment Operators (3) OperatorDescription Example **= Exponent AND Performs exponential (power) calculation on operators and assign value to the left Operand c **= a is equivalent to c = c ** a //= Floor Division It performs floor division on operators and assign value to the left operand c //= a is equivalent to c = c // a
  • 32.
    Bitwise Operators Operator DescriptionExample & Binary AND Operator copies a bit to the result, if it exists in both operands (a & b) (means 0000 1100) | Binary OR It copies a bit, if it exists in either operand. (a | b) = 61 (means 0011 1101) ^ Binary XOR It copies the bit, if it is set in one operand but not both. (a ^ b) = 49 (means 0011 0001) Assume variable a = 60 and variable b = 13. Which is in binary a = 0011 1100, b = 0000 1101
  • 33.
    Bitwise Operators (2) OperatorDescription Example ~ Binary Ones Complement It is unary and has the effect of 'flipping’ bits. (~a ) = -61 (means 1100 0011 in 2’s complement form due to a signed binary number. << Binary Left Shift The left operand’ s value is moved left by the number of bits specified by the right operand. a << = 240 (means 1111 0000) >> Binary Right Shift The left operand’ s value is moved right by the number of bits specified by the right operand. a >> = 15 (means 0000 1111) Assume variable a = 60 and variable b = 13. Which is in binary a = 0011 1100, b = 0000 1101
  • 34.
    Logical Operators Operator DescriptionExample and Logical AND If both the operands are true then condition becomes true. (a and b) is False. or Logical OR If any of the two operands are non-zero then condition becomes true. (a or b) is True. not Logical NOT Used to reverse the logical state of its operand. Not(a and b) is True. Assume variable a = True and variable b = False
  • 35.
    Membership Operators Operator DescriptionExample In Evaluates to true, if it finds a variable in the specified sequence and false otherwise. x in y, here in results in a 1 if x is a member of sequence y. not in Evaluates to true, if it does not find a variable in the specified sequence and false otherwise. x not in y, here not in results in a 1 if x is not a member of sequence y. Python’s membership operators test for membership in a sequence, such as strings, lists, or tuples
  • 36.
    Identity Operators Operator DescriptionExample is Evaluates to true if the variables on either side of the operator point to the same object and false otherwise. x is y, here is results in 1 if id(x) equals id(y). is not Evaluates to false if the variables on either side of the operator point to the same object and true otherwise. x is not y, here is not results in 1 if id(x) is not equal to id(y). Identity operators compare the memory locations of two objects.
  • 37.
    Operators Precedence Operator Description **Exponentiation (raise to the power) ~ + - Ccomplement, unary plus and minus (method names for the last two are +@ and -@) * / % // Multiply, divide, modulo and floor division + - Addition and subtraction >> << Right and left bitwise shift & Bitwise 'AND' ^ | Bitwise exclusive `OR' and regular `OR' <= < > >= Comparison operators <> == != Equality operators Operator precedence affects the evaluation of an an expression.
  • 38.
    Operators Precedence Operator Description =%= /= //= -= += *= **= Assignment operators is is not Identity operators in not in Membership operators not or and Logical operators Operator precedence affects the evaluation of an an expression.
  • 39.
  • 40.
    Decision Making • Decision-makingis the anticipation of conditions occurring during the execution of a program and specified actions taken according to the conditions. • Decision structures evaluate multiple expressions, which produce TRUE or FALSE as the outcome. • Python programming language assumes any non-zero and non-null values as TRUE, and any zero or null values as FALSE value.
  • 41.
    Decision Making Statements StatementDescription if statements An if statement consists of a Boolean expression followed by one or more statements. if...else statements An if statement can be followed by an optional else statement, which executes when the Boolean expression is FALSE. nested if statements You can use one if or else if statement inside another if or else if statement(s).
  • 42.
  • 43.
  • 44.
    IF...ELIF...ELSE Statements Syntax if…else Flow Diagram Anelse statement can be combined with an if statement. An else statement contains a block of code that executes if the conditional expression in the if statement resolves to 0 or a
  • 45.
  • 46.
    The elif statement •The elif statement allows you to check multiple expressions for TRUE and execute a block of code as soon as one of the conditions evaluates to TRUE. • Similar to the else, the elif statement is optional. However, unlike else, for which there can be at the most one statement, there can be an arbitrary number of elif statements following an if.
  • 47.
    The elif statement(2) Syntax Flow Diagram
  • 48.
    Nested IF Statements Theremay be a situation when you want to check for another condition after a condition resolves to true. In such a s you can use the nested if construct. In a nested if construct, you can have an if...elif...else construct inside another if...elif...else construct.
  • 49.
  • 50.
    Single Statement Suites Ifthe suite of an if clause consists only of a single line, it may go on the same line as the header statement.
  • 51.
  • 52.
    Loops • In general,statements are executed sequentially- The first statement in a function is executed first, followed by the second, and so on. There may be a situation when you need to execute a block of code several number of times. • Programming languages provide various control structures that allow more complicated execution paths. • A loop statement allows us to execute a statement or group of statements multiple times.
  • 53.
    Types of loops LoopType Description while loop Repeats a statement or group of statements while a given condition is TRUE. It tests the condition before executing the loop body. for loop Executes a sequence of statements multiple times and abbreviates the code that manages the loop variable. nested loops You can use one or more loop inside any another while, or for loop.
  • 54.
    Loop Statements Syntax Flow Diagram Awhile loop statement in Python programming language repeatedly executes a target statement as long as a given condition is true.
  • 55.
  • 56.
    The Infinite Loop Aninfinite loop might be useful in client/server programming where the server needs to run continuously so that client programs can communicate with it as and when required.
  • 57.
    Else Statement withLoops • If the else statement is used with a for loop, the else statement is executed when the loop has exhausted iterating the list. • If the else statement is used with a while loop, the else statement is executed when the condition becomes false.
  • 58.
    for Loop Statements Syntax FlowDiagram The for statement in Python has the ability to iterate over the items of any sequence, such as a list or a string.
  • 59.
  • 60.
  • 61.
    else Statement withLoops • If the else statement is used with a for loop, the else block is executed only if for loops terminates normally (and not by encountering break statement). • If the else statement is used with a while loop, the else statement is executed when the condition becomes false.
  • 62.
  • 63.
  • 64.
  • 65.
    Loop Control Statements TheLoop control statements change the execution from its normal sequence. When the execution leaves a scope, all automatic objects that were created in that scope are destroyed. Control Statement Description break statement Terminates the loop statement and transfers execution to the statement immediately following the loop. continue statement Causes the loop to skip the remainder of its body and immediately retest its condition prior to reiterating. pass statement The pass statement in Python is used when a statement is required syntactically but you do not want any command or code to
  • 66.
    break Statements Syntax Flow Diagram Thebreak statement is used for premature termination of the current loop.
  • 67.
  • 68.
    continue Statements Syntax Flow Diagram Thecontinue statement in Python returns the control to the beginning of the current loop. When encountered, the loop starts next iteration without executing the remaining statements in the current
  • 69.
  • 70.
    pass Statements Syntax It isused when a statement is required syntactically but you do not want any command or code to execute. The pass statement is a null operation; nothing happens when it executes. The pass statement is also useful in places where your code will eventually go, but has not been written yet i.e. in stubs).
  • 71.
  • 72.
  • 73.
    Numbers Python supports differentnumerical types- • int (signed integers): They are often called just integers or ints. They are positive or negative whole numbers with no decimal point. Integers in Python 3 are of unlimited size. Python 2 has two integer types - int and long. There is no 'long integer' in Python 3 anymore. • float (floating point real values): Also called floats, they represent real numbers and are written with a decimal point dividing the integer and the fractional parts. Floats may also be in scientific notation, with E or e indicating the power of 10 (2.5e2 = 2.5 x 102 = 250). • complex (complex numbers): are of the form a + bJ, where a and b are floats and J (or j) represents the square root of -1 (which is an imaginary number). The real part of the number is a, and the imaginary part is b. Complex numbers are not used much in Python programming.
  • 74.
  • 75.
    Number Type Conversion •Type int(x) to convert x to a plain integer. • Type long(x) to convert x to a long integer. • Type float(x) to convert x to a floating-point number. • Type complex(x) to convert x to a complex number with real part x and imaginary part zero. • Type complex(x, y) to convert x and y to a complex number with real part x and imaginary part y. x and y are numeric expressions.
  • 76.
  • 77.
  • 78.
  • 79.
  • 80.
  • 81.
  • 82.
  • 83.
  • 84.
  • 85.
  • 86.
  • 87.
  • 88.
  • 89.
  • 90.
  • 91.
  • 92.
  • 93.
  • 94.
  • 95.
  • 96.
  • 97.
  • 98.
  • 99.