Question

How to replace any element from a list with its ordinal number using Python

Answer 1

lst = ["a", "b", "c", "c", "b", "d", "e", "f", "g", "f"]
toreplace = {"b", "f"}

result = [i + 1 if x in toreplace else x for i, x in enumerate(lst)]
print(result)



'''
run:
 
['a', 2, 'c', 'c', 5, 'd', 'e', 8, 'g', 10]
 
'''
 

 

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