Count the number of occurrences of a character in a string
count, python, string
Solution
`str.count(sub[, start[, end]])`
Return 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.
>>> sentence = 'Mary had a little lamb'
>>> sentence.count('a')
4
Problem
How do I count the number of occurrences of a character in a string? e.g. `'a'` appears in `'Mary had a little lamb'` 4 times.