diff options
| -rw-r--r-- | python.html.markdown | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/python.html.markdown b/python.html.markdown index 8c56a3a9..3b5075ae 100644 --- a/python.html.markdown +++ b/python.html.markdown @@ -217,18 +217,23 @@ filled_dict.setdefault("five", 6) #filled_dict["five"] is still 5 # Sets store ... well sets empty_set = set() # Initialize a set with a bunch of values -filled_set = set([1,2,2,3,4]) # filled_set is now set([1, 2, 3, 4]) +some_set = set([1,2,2,3,4]) # filled_set is now set([1, 2, 3, 4]) + +# Since Python 2.7, {} can be used to declare a set +filled_set = {1 2 2 3 4} # => {1 2 3 4} # Add more items to a set -filled_set.add(5) # filled_set is now set([1, 2, 3, 4, 5]) +filled_set.add(5) # filled_set is now {1, 2, 3, 4, 5} # Do set intersection with & -other_set = set([3, 4, 5 ,6]) -filled_set & other_set #=> set([3, 4, 5]) +other_set = set{3, 4, 5, 6} +filled_set & other_set #=> {3, 4, 5} + # Do set union with | -filled_set | other_set #=> set([1, 2, 3, 4, 5, 6]) +filled_set | other_set #=> {1, 2, 3, 4, 5, 6} + # Do set difference with - -set([1,2,3,4]) - set([2,3,5]) #=> set([1, 4]) +{1,2,3,4} - {2,3,5} #=> {1, 4} # Check for existence in a set with in 2 in filled_set #=> True |