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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 get the maximum, minimum and sum of a list with built-in functions.
[8, 3, 15, 6]
15 3 32
max(), min(), sum().numbers = [8, 3, 15, 6]print(max(numbers), min(numbers), sum(numbers))15 3 32
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Write a Python program to remove an element at a given index with pop().
["a", "b", "c", "d"], index 2
c ['a', 'b', 'd']
pop(index) removes and returns the item.items = ["a", "b", "c", "d"]removed = items.pop(2)print(removed, items)c ['a', 'b', 'd']
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Write a Python program to sort a list with sort() and with sorted().
[5, 2, 9, 1, 7]
[1, 2, 5, 7, 9] [5, 2, 9, 1, 7] [9, 7, 5, 2, 1]
sorted() returns a new list; sort() sorts in place.numbers = [5, 2, 9, 1, 7]print(sorted(numbers), numbers)numbers.sort(reverse=True)print(numbers)[1, 2, 5, 7, 9] [5, 2, 9, 1, 7] [9, 7, 5, 2, 1]
The original order is unchanged by sorted().
sort() changes the list; reverse=True gives descending order.
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Write a Python program to add one list to another with extend().
[1, 2], [3, 4]
[1, 2, 3, 4]
a.extend(b) adds every item of b to a.a = [1, 2]b = [3, 4]a.extend(b)print(a)[1, 2, 3, 4]
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Write a Python program to get the words of a string that contain at least one vowel.
"www Student ppp are qqqq learning Python vvv"
['Student', 'are', 'learning', 'Python']
any character is a vowel.text = "www Student ppp are qqqq learning Python vvv"print([w for w in text.split() if any(ch in "aeiouAEIOU" for ch in w)])['Student', 'are', 'learning', 'Python']
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Write a Python program to check whether a list reads the same forwards and backwards.
[1, 2, 3, 2, 1], [1, 2, 3]
[1, 2, 3, 2, 1] True [1, 2, 3] False
for items in [[1, 2, 3, 2, 1], [1, 2, 3]]: print(items, items == items[::-1])[1, 2, 3, 2, 1] True [1, 2, 3] False
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Write a Python program to get all elements divisible by both 3 and 7.
[21, 14, 63, 9, 42, 50]
[21, 63, 42]
numbers = [21, 14, 63, 9, 42, 50]print([n for n in numbers if n % 3 == 0 and n % 7 == 0])[21, 63, 42]
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Write a Python program to remove negative values from a list.
[4, -2, 0, 7, -9, 3]
[4, 0, 7, 3]
numbers = [4, -2, 0, 7, -9, 3]print([n for n in numbers if n >= 0])[4, 0, 7, 3]
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Write a Python program to remove the 1st, 3rd and 6th elements of a list.
["a", "b", "c", "d", "e", "f", "g"]
['b', 'd', 'e', 'g']
items = ["a", "b", "c", "d", "e", "f", "g"]remove = {0, 2, 5}print([x for i, x in enumerate(items) if i not in remove])['b', 'd', 'e', 'g']
Positions 1, 3 and 6 are indexes 0, 2 and 5.
Deleting with del one by one shifts later indexes; building a new list avoids that trap.
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Write a Python program that returns True if two lists have at least one common member.
[1, 2, 3] and [5, 3, 9]; [1, 2] and [7, 8]
True False
def has_common(a, b): return not set(a).isdisjoint(b) print(has_common([1, 2, 3], [5, 3, 9]), has_common([1, 2], [7, 8]))True False
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