Basics:

Declaring a variable

x = 14

If Statement:

  if condition1:
    action1()
  elif condition2:
    action2()
  else:
    action3()

For Loop

for i in range(10):
  print(i)

While Loop

while x < 10:
  print(x)

Comment

# This is a comment

Arithmetic

Action	Code
Increment x by 1	`x += 1`
Decrement x by 1	`x -= 1`

Lists:

Action	Code
Create an empty list	`names = []`
Create a list	`names = ['Martha', 'Erin', 'Rupert']`
Find the length of a list	`len(names)`
Get the 1st item (index 0)	`names[0]`
Get the 2nd item (index 1)	`names[1]`
Get the last item	`names[-1]`
Get the first x items	`names[:x]`
Get the last x items	`names[-x:]`
Get the 2nd and 3rd	`names[1:3]`
To reverse items on a list	`names[::-1]`
Looping through a list	`for name in names:`
Adding items to a list	`names.append('other')`
Combining lists	`names + ['other', 'other']`
Repeat a list	`names * 2`
Filter a list	[`name for name in names if name[0] == 't']`

Strings:

A string is a series of characters. For example: The string "Hello" must be put in quote marks "" or single quotes ''. A string can be treated as a list of letters. All commands in the list section above work e.g.

Action	Code
Length of string	`len("Hello, World")`
Define a string to be a variable	`word = "Hello"`
1st letter	`word[0]`
Replace l with p (case sensitive)	`word.replace('l', 'p')`
Split into list of words	`word_description.split(' ')`

Functions:

Action	Code
declare a function	`def example(word):`
call a function	`example('hello')`

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