Intro to Python

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.