Difference

The difference operation compares two sets and returns a set containing the elements that are in the first set but not in the second set. The difference operator - uses this syntax:

The difference method uses this syntax:

a.difference(b)

The following example finds the set of round things that aren't pink:

>>> roundthings = ['orange',

'gumball',

'egg', 'tire']

>>> pinkthings = ['lipstick'

, 'gumball',

'baby blanket']

>>> a = set(roundthings)

>>> q = set(pinkthings)

>>> a - q

set(['orange', 'egg', 'tire'

])

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