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Python practice problems help beginners to become experts in a python programming language with a small amount of practice effort.
Write a Python program to check whether a set is empty.
set(), {1}set() empty
{1} not emptyfor s in [set(), {1}]: print(s, "empty" if not s else "not empty")set() empty
{1} not emptyNew to this topic? Read the lesson, then come back.
Write a Python program to remove several elements at once.
{1, 2, 3, 4, 5}, remove [2, 4]{1, 3, 5}difference_update() or -=.s = {1, 2, 3, 4, 5}s -= {2, 4}print(s){1, 3, 5}New to this topic? Read the lesson, then come back.
Write a Python program to add several elements at once.
{1, 2}, add [3, 4, 2]{1, 2, 3, 4}update() takes any iterable.s = {1, 2}s.update([3, 4, 2])print(s){1, 2, 3, 4}New to this topic? Read the lesson, then come back.
Write a Python program to remove a specific element, reporting whether it was there.
{5, 10, 15}, remove 10 and 99removed 10
99 not in set
{5, 15}in, then remove().s = {5, 10, 15}for x in [10, 99]: if x in s: s.remove(x) print("removed", x) else: print(x, "not in set")print(s)removed 10
99 not in set
{5, 15}New to this topic? Read the lesson, then come back.
Write a Python program to find the elements common to two sets of words.
{"python", "java", "sql"}, {"sql", "python", "go"}['python', 'sql']
&, then sorted for display.a = {"python", "java", "sql"}b = {"sql", "python", "go"}print(sorted(a & b))['python', 'sql']
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Write a Python program to check whether a set is a superset of another.
{1, 2, 3, 4}, {2, 3}True False
>= or issuperset().print({1, 2, 3, 4} >= {2, 3}, {1, 2} >= {2, 3})True False
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Write a Python program to update a set to the symmetric difference with another set.
{1, 2, 3}, {3, 4}{1, 2, 4}^=.a = {1, 2, 3}a ^= {3, 4}print(a){1, 2, 4}New to this topic? Read the lesson, then come back.
Write a Python program to find the union of several sets.
{1, 2}, {2, 3}, {3, 4}{1, 2, 3, 4}set().union(*sets).sets = [{1, 2}, {2, 3}, {3, 4}]print(set().union(*sets)){1, 2, 3, 4}New to this topic? Read the lesson, then come back.
Write a Python program to keep only the items shared with another set.
{1, 2, 3, 4}, {2, 4, 6}{2, 4}intersection_update() or &=.a = {1, 2, 3, 4}a &= {2, 4, 6}print(a){2, 4}New to this topic? Read the lesson, then come back.
Write a Python program to find the difference between two sets with the method and the operator.
{"a", "b", "c"}, {"b"}['a', 'c'] ['a', 'c']
difference() accepts any iterable; - needs sets.a = {"a", "b", "c"}print(sorted(a.difference(["b"])), sorted(a - {"b"}))['a', 'c'] ['a', 'c']
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