Count of a string in a list

Question

I need help:

I want to write function that: takes a list as a input and return count of specific string.

If function input is x=[a,a,b,c] function need return 2 (a is two times in this list).

Answer 1

>>> def F(seq, string):
        return seq.count(string)

>>> F(['a','a','b','c'], 'a')
2

Equivalent to:

def F(seq, string):
    n = 0
    for x in seq:
        if x == string:
            n += 1
    return n