Python

• data types

  integer - whole number

  string - sentences with letters

  floats - numbers with decimal points

  booleans - true or false
• Variables are used to store data, they can be assigned values using the assignment operator =
• !=


  not equal to
• append()


  adds an item to the end of a list using value
• insert()


  adds item to a specific position in a list
• pop()

  removes and stores an item from a specific index in a list. if there is nothing in the brackets, the last item in the list is removed.
• len()


  gives the length of a list
• in


  tells you whether an item is in a list
• remove()

  removes an item from a list using value
• del myList []

  removes an item from a list using index
• sort()


  sorts a list in ascending order
• for loops

  for i in range (0,5,2)

  print(i)

  
  

  will print all even numbers from 0 to 4

  0 - the starting index

  5 - the ending index

  2 - increasing in steps of 2
• for i in range (11)

  print(i)

  
  

  the program automatically assumes that you are going up in steps of 1 and starting from the number 0, so it is not necessary to type this.

  this will print all the numbers from 0 to 10.
• numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9]

  print (numbers[0: :5])

  
  

  this prints the numbers 1 and 6, as the program automatically assumes that the range is to the end of the list.
• while loops


  when the condition is True, the indented code will run. When the code is False, the indented code does not run and the program goes on to the next bit of code which is not indented.