Python Syntax

As we learned in the previous page, Python syntax can be executed by writing directly in the Command Line:

Hello, World! Or by creating a python file on the server, using the .py file extension, and running it in the Command Line: C:\Users\

>python myfile.py

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.

Example if 5 > 2:

Python will give you an error if you skip the indentation:

if 5 > 2:

The number of spaces is up to you as a programmer, the most common use is four, but it has to be at least one.

Example if 5 > 2:

if 5 > 2:

You have to use the same number of spaces in the same block of code, otherwise Python will give you an error:

if 5 > 2:

In Python, a variable is created when you assign a value to it:

Python has no command for declaring a variable. You will learn more about variables in the Python Variables chapter.

#, and Python will render the rest of the line as a comment:

#This is a comment.