str.count
Count the non-overlapping occurrences of the substring sub.
Python 3.13
str.count(sub[, start[, end]])Parameters
- substr
- The substring to count.
- startintoptional
- The index where the search starts.
- endintoptional
- The index before which the search stops.
Return value
An integer; 0 if the substring is not found.
Examples
Counting a letter in a word
Python 3.13
print('banana'.count('a'))3
Matches do not overlap
Python 3.13
print('aaaa'.count('aa'))2
Details
Unlike list.count, it looks for a substring rather than a single item. Overlapping occurrences are not counted: "aa" occurs in "aaaa" 2 times.