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pythonarrayslistindexingenumerate

How can I find the index of each occurrence of an item in a python list?

I want to search through a python list and print out the index of each occurrence.

a = ['t','e','s','t']
a.index('t')

The above code only gives me the first occurrence's index.

Solution

  • You can use a list comprehension with enumerate:

    a = ['t','e','s','t']
indices = [i for i, x in enumerate(a) if x == 't']

    Inside of the list comprehension, i is the current index and x is the value at that index.