Tuples

Tuple Unpacking

• Tuple unpacking allows you to assign each item in a collection to a variable.

• Example:

    numbers = (1, 2, 3)
  
    a, b, c = numbers
  
    print(a)
  
    print(b)
  
    print(c)
  

• This can be also used to swap variables by doing a, b = b, a , since b, a on the right hand side forms the tuple (b, a) which is then unpacked.

• A variable that is prefaced with an asterisk (*) takes all values from the collection that are left over from the other variables.

• Example:

    a, b, *c, d = [1, 2, 3, 4, 5, 6, 7, 8, 9]
  
    print(a)
  
    print(b)
  
    print(c)
  
    print(d)
  

  • Here c will get assigned the values 3 to 8