Count the number occurrences of a character in a string

Question

What's the simplest way to count the number of occurrences of a character in a string? e.g. count the number of times 'a' appears in 'Mary had a little lamb' Select the correct answer from above options

Answer 1

In Python, we have a function str.count() which tells the number of count of any character in a string:- str.count(sub[, start[, end]]):- It returns the number of non-overlapping occurrences of substring sub in the range [start, end]. Optional arguments start and end are interpreted as in slice notation. Below is an example that shows you how it works:- sentence = 'Mary had a little lamb' sentence.count('a')