Introduction to Variables - Python 3 Beginner Programming Part 5

Part 5 of Python 3 Programming.

Today we'll be taking a look at Variables! A very fundamental concept in Programming. You can imagine variables as a way of naming a value and then to use that value you simply call it by its name.

I forgot to mention in the video that when naming a variable, there are some guidelines you need to follow, You:

Can
- Start variables with lowercase or uppercase
- Have single letter variable names
- Use underscores at the start, end or middle (e.g var_name, _var_name, var_name_)
- Include numbers in the middle of your variable name (e.g. var_name_1, var_1_name, var1111)

Can't
- Start a variable name with a number (e.g. 1_var, 1num)
- Have single number variables (e.g. 0 = "this", 1 = "r")
- Have a variable name that is already occupied by the python syntax (e.g. print = "ssd", includes operators too, + = 22)

There are quite a few more combinations but this is just the general idea on naming variables in Python 3. Also generally when creating long variable names, you'd want to represent a space with an underscore. E.g. a_really_long_variable_name = "small".

Have a look at PEP8 for Python, this is the naming convention that python uses for their inbuilt standard libraries.

Enjoy!
Let me know down the comments if there's anything.

[Karimozoro]

How did you make a comment hash at once for many lines?
Thank you for your tutorials they are great