CookieSensei

CookieSensei Home Learn Free Workshops Live Guidance About FAQ Contact Launch Lab

Learn/Programming & AI/Thinking Like a Programmer/Basics of python

Thinking Like a Programmer•Interactive notebook lesson•Free

Set

No account is required. Learn the material, try the examples, and mark it complete locally when you are ready to move on.

Set

Container of unique values.

Curly brackets are used as the notations for sets.

We can create a set out of any sequence of python objects. Even if we pass a lot of repeated values, only the unique values will be stored inside the set.

Codepython

our_set = {1,1,1,1,1,1,1,1,0,0,0,0,0,1,2,2,4}
our_set

Output

{0, 1, 2, 4}

Codepython

our_set2 = {0,0,0, True, True, False, "some string"}
our_set2

Output

{0, True, 'some string'}

Codepython

# We haven't really discussed function arguments
# so for now, consider set1 if the first set and 
# set2 is the second set

set.difference(set1, set2)

# Output will be
# how many of the set1 values are present only in 
# set1 and not in set2

Output

{0, 1}

CookieSensei

Set

Set

Useful set methods

add

discard

Mathematical operations with Sets

Intersection

Union

Difference

Universal set

Finished this lesson?