Python is an object-oriented programming language that allows programmers to reuse pre-existing code through objects. It has a simple syntax and is less verbose than other languages. Python code is written in source files with a .py extension and interpreted one line at a time. Source files contain libraries and main code and use comments and whitespace to organize code. The print function displays text on the screen.

1. Introduction to PythonIntroduction to Python
ProgrammingProgramming

2. Why Python?Why Python?
 Python is what is referred to as an object-oriented
programming language (OOP)
 OOP is a programming style that allows programmers to
reuse pre made code.
◦ Don’t need to recreate the wheel
 Thus creates a much more efficient programming language
so programmers don’t have to spend tedious amounts of
time creating code that had been published.
 Simple
 Less Syntax
 We will be discussing OOP as we move through the course.

3. What is Python?What is Python?
Python is a general purpose programming
language. That means you can use Python
to write code for any programming tasks.
◦ Google search engine
◦ Mission critical projects in NASA,
◦ Processing financial transactions at New York
Stock Exchange.
◦ Data Analytics

4. Interpreted?Interpreted?
Python is interpreted, which means that
python code is translated and executed by
an interpreter one statement at a time.
This means you can run commands/code
on the command prompt…
Through a command
prompt with a text file…
Using an IDE

5. What Does It Look Like?What Does It Look Like?
Python Statements

6. Parts of a Python ProgramParts of a Python Program
Def: Source Code is the program text
entered into an interpreter by the
programmer.
◦ The saved file is referred to as, the source file.
◦ The main file in a python program, called main
◦ Can program on the command prompt
The extension to a source file is “.py”
◦ Xcel - .xls
◦ Power Point - .ppt
Two main parts to a source file
◦ Libraries
◦ Main code

7. Good programming proclamationsGood programming proclamations
Using comments to denote programs or
sections of code
◦ A comment beginning with # is called a single-line comment
because it terminates at the end of the current line.
◦ You also may use a multi-line comment—possibly containing
many lines—begins with ’’’ and ends with ’’’.
You use blank lines, space characters and tab characters
(i.e., “tabs”) to make programs easier to read.
◦ Together, these characters are known as white space.
◦ White-space characters are USUALLY ignored by the interpreter.
◦ Python has its own rules with white space

8. CheckpointCheckpoint
1. What is OOP?
2. What is the name of the file and code
that the text for a program is entered into
the interpreter?
3. What is a library? Why aren’t all the
functions preloaded?
4. What are the two styles of comments
you can utilize and their symbols?

9. Printing a Line of TextPrinting a Line of Text
print(“ “)
Anything placed inside the quotes will be printed on the screen
upon execution of the print command.

10. Printing a Line of TextPrinting a Line of Text
print(“ “)
Anything placed inside the quotes will be printed on the screen
upon execution of the print command.