Variables

In Python, variables are defined with certain rules. 

Let's get started reading about them!! 

• Don't create variable with a number
• Eg: '12a'; #is wrong.
• Don't define any variables with space, instead we can define with intend mark.
• Eg: new word = Hello ; #is wrong
• new_word = Hello ; #is correct

• Don't create any variable contain any of these symbols:

  :'",<>/?|\!@#%^&*~-+

• it's considered best practice (PEP8) that names are lowercase with underscores

• avoid using Python built-in keywords
• built-in keywords like list and str
• avoid using the single characters l (lowercase letter el), O (uppercase letter oh) and I (uppercase letter eye) as they can be confused with 1 and 0