The document discusses the syllabus for a Python programming unit. It covers conceptual introductions to computer science topics, modern computer systems, installing Python, basic syntax, and the concept of data types including variables, assignments, immutable variables, numerical types, and arithmetic operators.
Mumbai Academics is Mumbai’s first dedicated Professional Training Center for Training with Spoke and hub model with Multiple verticles . The strong foundation of Mumbai Academics is laid by highly skilled and trained Professionals, carrying mission to provide industry level input to the freshers and highly skilled and trained Software Professionals/other professional to IT companies.
its an amazing slide for u.you become helpful to read this slide.its clear your basic about java.you can learn a lot to read this slide properly.its consist of comment,java documentation ,java doc tags,class ,static keyword,j option panes,How do you convert a String to an int data type in Java? etc
its all about java variable.....you may also learn about various data type by this slide. freshers become helpful to read out this.this slides also may helpful in your varsity java course class .in this slide there is vast discussion about java variable
Mumbai Academics is Mumbai’s first dedicated Professional Training Center for Training with Spoke and hub model with Multiple verticles . The strong foundation of Mumbai Academics is laid by highly skilled and trained Professionals, carrying mission to provide industry level input to the freshers and highly skilled and trained Software Professionals/other professional to IT companies.
its an amazing slide for u.you become helpful to read this slide.its clear your basic about java.you can learn a lot to read this slide properly.its consist of comment,java documentation ,java doc tags,class ,static keyword,j option panes,How do you convert a String to an int data type in Java? etc
its all about java variable.....you may also learn about various data type by this slide. freshers become helpful to read out this.this slides also may helpful in your varsity java course class .in this slide there is vast discussion about java variable
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Data Type is a basic classification which identifies.docxtheodorelove43763
Data Type is a basic classification which identifies different types of data.Data Types helps in:Determining the possible values of a variablePossible operations which can be executed on the typeMeaning of the dataDifferent ways to store the data
Data Types are of different types:
Primitive data Types
Composite Data Types
*
Primitive data types are those data types which are not defined in terms of other data types.
Examples are:
Integer
Floating Point
Boolean
Character
*
NOTE: primitive here is not the same as how we use it when referring to the primitive types in Java even though they are mostly the same types. By primitive, we mean directly supported by hardware. Strings do not appear in this list because strings are rarely supported directly in hardware, instead they are stored as individual characters and linked together through some mechanism implemented by the programming language (usually as arrays of characters).
What about pointer types? You’ll notice that they do not appear above. Typically, pointers are just unsigned int values. But we treat pointers differently than ints because we do not permit pointer arithmetic (except in a few languages) and require dereferencing of some kind. Dereferencing may be directly supported in hardware by having indirect addressing modes.
Integers are used to hold integer values only.This is further categorized into:
byte
short
int
long
signed
Unsigned
Examples are:
unsigned int x = 21234;
unsigned int y = 31234;
unsigned int z;
z = x + y;
This data type contains decimal points.Examples are:
float f = 20.0 / 3.0;
Current standard version of floating-point
Single-precision (float)
One word: 1 sign bit, 23 bit fraction, 8 bit exponent
Positive range: 1.17549435 × 10-38 … 3.40282347 × 10+38
Double-precision (double)
Two words: 1 sign bit, 52 bit fraction, 11 bit exponent
Positive range: 2.2250738585072014 × 10-308 … 1.7976931348623157 × 10+308
*
Boolean Data type is used to store logical value.It can have either True or False value.It is a one bit representation0 represents false value1 represents true valueExample: Boolean a;
a=true;
Roman alphabet, punctuation, digits, and other symbols:Can encode within one byte (256 symbols)
In C:
char a_char = ’a’;
char newline_char = ’\n’;
char tab_char = ’\t’;
char backslash_char = ’\\’;
These data types are derived from more than one primitive data type.Examples are:
Arrays
Records
Structure
Union
Arrays are a finite sequence of variables of the same data type These are commonly implemented by the compiler generating array descriptors for each array
here we have
descriptors for
1-D and multi-D
arrays
*
Records are Varied aggregate of data elementsThe elements of a record are known as fields or membersRecords were introduced in COBOLThis data type is used in many languages.In Java, the functionality of records are achieved through the use of classes
Examples:
COBOL (nested structure.
This presentation is a great resource for zero-based Python programmers who wants to learn Python 3. This course includes brief history of Python and familiarity of its basic syntax.
Similar to Python Programming | JNTUK | UNIT 1 | Lecture 4 (20)
Main Java[All of the Base Concepts}.docxadhitya5119
This is part 1 of my Java Learning Journey. This Contains Custom methods, classes, constructors, packages, multithreading , try- catch block, finally block and more.
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June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
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unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
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2. UNIT 1 : SYLLABUS
• Conceptual introduction: topics in computer science, algorithms;
• Modern computer systems: hardware architecture, data
representation in computers, software and operating system;
• Installing Python; basic syntax, interactive shell, editing, saving, and
running a script.
• The concept of data types; variables, assignments; immutable
variables; numerical types;
• arithmetic operators and expressions; comments in the program;
understanding error messages;
4. The concept of data types
• A data type consists of a set of values and a set of operations that
can be performed on those values.
• A literal is the way a value of a data type looks to a programmer.
6. The concept of data types
String Literals:
In Python, a string literal is a
sequence of characters
enclosed in single or double
quotation marks.
Empty String
Empty String
7. The concept of data types
String Literals:
In Python, a string literal is a
sequence of characters
enclosed in single or double
quotation marks.
Single Quote inside the String
8. The concept of data types
String Literals:
In Python, a string literal is a
sequence of characters
enclosed in single or double
quotation marks.
Three Quotes for
Multiple line string
9. The concept of data types
String Literals:
In Python, a string literal is a
sequence of characters
enclosed in single or double
quotation marks. n Embedded
10. The concept of data types
Escape Sequences:
• The newline character n is
called an escape sequence.
• Escape sequences are the
way Python expresses
special characters, such as
the tab, the newline, and the
backspace (delete key), as
literals.
11. The concept of data types
String Concatenation:
“Hello” + “world” Hello
world
a = “welcome”
b = “to”
c = “python”
d = a + b + c “Welcome to
python”
+ is used for
combining
12. The concept of data types
String Repeating:
“Hi ” * 3 “Hi Hi Hi”
a = “hello ”
b = a*2 “hello hello”
* is used for
combining
15. Variables, Assignments, immutable variables
Variable:
• In Python, a variable is a
reserved memory location
used to store values.
• Python has no command for
declaring a variable. A variable
is created the moment a value
is assigned to it.
• The equal to (=) operator is
used to assign value to a
variable. (Assignment
Operator).
• If we want to store the age of a
person, we should not name
the variable as x, or y or a, or i.
• we should name the variable
as age.
16. Variables, Assignments, immutable variables
• Use letters
• Use
numbers
with letters
• Use ‘_’ for
long names
a = 5 a variable
A = 6 a variable
(note : A & a are different
variables)
A 1 = 10 a variable
my_name = “Raja” a
variable
17. Variables, Assignments, immutable variables
2a = 100 syntax error
a2 = 100 is a variable
if = 5 is a syntax error
If = 5 If is a variable
True = 6 is a syntax error
true = 6 true is a variable
• Don’t start
with
number
• Don’t use
keywords
as variable
names
18. Variables, Assignments, immutable variables
Multiple Assignment:
• Python allows you to assign a
single value to several
variables simultaneously.
• number1 = number2 = number3 =
100
• This is called chained
assignment.
• We can also assign multiple
objects to multiple variables;
this is called multiple
assignment.
• value1, value2, value3 = 1, 2.5, "Ram“
19. Variables, Assignments, immutable variables
• Associating a value with a
variable using the assignment
operator (=) is called as
Binding.
Value1 = Value2 =100
Value1 = “Hello”
Print(Value1) “Hello” not 100
• We cannot use Python variables
without assigning any value.
• If we try to use a variable
without assigning any value
then, Python interpreter shows
error like "name is not defined".
20. Variables, Assignments, immutable variables
• Most python objects (Booleans,
integers, floats, strings, and tuples)
are immutable.
• This means that after you create the
object and assign some value to it,
you can't modify that value.
• Using the expressions, a = 1 and then
a = 2.
• The object with value 1 still exists in
memory, but you’ve lost the binding
to it. (can’t access it anymore)
23. Numerical types
Integers:
• This value is represented by int class.
• It contains positive or negative whole
numbers (without fraction or
decimal).
• In Python there is no limit to how
long an integer value can be..
Ex : a = 5, b = 6
type(a) <class 'int'>
type(b) <class 'int'>
24. Numerical types
Float:
• This value is represented by float
class.
• It is a real number with floating point
representation. It is specified by a
decimal point.
• Optionally, the character e or E
followed by a positive or negative
integer may be appended to specify
scientific notation.
Ex : a = 5.5, b = 6.0
type(a) <class ‘float'>
type(b) <class ‘float'>
25. Numerical types
Complex Numbers:
• Complex number is
represented by complex class.
• It is specified as
(real part) + (imaginary part)j.
Ex : a = 2 + 6j, b = - 8 + 2j
type(a) <class ‘complex'>
type(b) <class ‘complex'>
26. Numerical types
Character set:
• All data and instructions in a
program are translated to binary
numbers before being run on a real
computer.
• To support this translation, the
characters in a string each map to an
integer value. This mapping is
defined in character sets, among
them the ASCII set and the
• UNICODE uses between 8 and 32
bits per character, so it can represent
characters from languages from all
around the world.
• ASCII represents lowercase letters (a-
z), uppercase letters (A-Z), digits (0–
9) and symbols
30. Boolean types
Boolean:
• Data type with one of the two
built-in values, True or False.
• Boolean objects that are equal
to True or False.
• Note: True and False with
capital ‘T’ and ‘F’ are valid
Booleans.
Ex : a = True , b = False
type(a) <class ‘bool'>
type(b) <class ‘bool’>
Ex : a = “true” b = “false”
type(a) <class ‘str'>
type(b) <class ‘str’>
31. UNIT 1 : SYLLABUS
• Conceptual introduction: topics in computer science, algorithms;
• Modern computer systems: hardware architecture, data
representation in computers, software and operating system;
• Installing Python; basic syntax, interactive shell, editing, saving, and
running a script.
• The concept of data types; variables, assignments; immutable
variables; numerical types;
• arithmetic operators and expressions; comments in the program;
understanding error messages;