get index of character in python list

>>> ['a', 'b'].index('b')
1

If the list is already sorted, you can of course do better than linear search.

Probably the index method?

a = ["a", "b", "c", "d", "e"]
print a.index("c")

As suggested by others, you can use index. Other than that you can use enumerate to get both the index as well as the character

for position,char in enumerate(['a','b','c','d']):
    if char=='b':
        print position

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