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Python: Common elements in a given list of lists

Python List: Exercise - 177 with Solution

Write a Python program to find common elements in a given list of lists.

Sample Solution:

Python Code:

def common_list_of_lists(lst):
    temp = set(lst[0]).intersection(*lst)
    return list(temp) 

nums = [[7,2,3,4,7],[9,2,3,2,5],[8,2,3,4,4]]
print("Original list:")
print(nums)
print("\nCommon elements of the said list of lists:")
print(common_list_of_lists(nums))
chars = [['a','b','c'],['b','c','d'],['c','d','e']]
print("\nOriginal list:")
print(chars)
print("\nCommon elements of the said list of lists:")
print(common_list_of_lists(chars))

Sample Output:

Original list:
[[7, 2, 3, 4, 7], [9, 2, 3, 2, 5], [8, 2, 3, 4, 4]]

Common elements of the said list of lists:
[2, 3]

Original list:
[['a', 'b', 'c'], ['b', 'c', 'd'], ['c', 'd', 'e']]

Common elements of the said list of lists:
['c']

Pictorial Presentation:

Python List: Common elements in a given list of lists.

Flowchart:

Flowchart: Common elements in a given list of lists.

Visualize Python code execution:

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Python Code Editor:

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Python: Tips of the Day

Returns True if the provided function returns True for every element in the list, False otherwise:

Example:

def tips_every(lst, fn=lambda x: x):
  return all(map(fn, lst))

print(tips_every([2, 4, 3], lambda x: x > 1))
print(tips_every([1, 2, 3]))

Output:

True
True