Question

How to extract unique digits from a list of tuples in Python

Answer 1

from itertools import chain

tupleList = [(3, 7), (99, 184, 3, 4), (31, 0)] 

mp = map(lambda ele: str(ele), chain.from_iterable(tupleList))
st = set()
for values in mp:
	for digits in values:
		st.add(int(digits))

print(st)



'''
run:

{0, 1, 3, 4, 7, 8, 9}

'''

 

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Answer 2

import re

tupleList = [(3, 7), (99, 184, 3, 4), (31, 0)] 

s = re.sub(r'[\[\]\(\), ]', '', str(tupleList))
st = set()
for digits in s:
    st.add(int(digits))

print(st)



'''
run:

{0, 1, 3, 4, 7, 8, 9}

'''

 

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