Python | Print the common elements in all sublists

# Python code to find duplicate element in all 
# sublist from list of list

# List of list initialization
Input = [ [10, 20, 30, 40],
          [30, 40, 60, 70],
          [20, 30, 40, 60, 70],
          [30, 40, 80, 90], ]

Output = set(Input[0])
for l in Input[1:]:
    Output &= set(l)

# Converting to list
Output = list(Output)

# Printing answer
print(Output)

# Python code to find duplicate element in all 
# sublist from list of list
import operator
from functools import reduce

# List of list initialization
Input = [ [10, 20, 30, 40],
          [30, 40, 60, 70],
          [20, 30, 40, 60, 70], 
          [30, 40, 80, 90], ]

# using reduce and map
out = reduce(operator.iand, map(set, Input))

# Converting into list
out = list(out)

# Printing output
print(out)

# Python code to find duplicate element in all 
# sublist from list of list

# importing reduce 
from functools import reduce

# function for set intersection
def func(a, b):
    return list(set(a).intersection(set(b)))

# List of list initialization
Input = [ [10, 20, 30, 40],
          [30, 40, 60, 70],
          [20, 30, 40, 60, 70], 
          [30, 40, 80, 90], ]

# using reduce and set.intersection
out = reduce(func, Input)

# Printing output
print(out)

# Python code to find duplicate element in all 
# sublist from list of list
Input = [ [10, 20, 30, 40],
          [30, 40, 60, 70],
          [20, 30, 40, 60, 70], 
          [30, 40, 80, 90], ]

common_elements = [x for x in Input[0] if all(x in sublist for sublist in Input)]

print(common_elements)
#This code is contributed by Edula Vinay Kumar Reddy