Python String count() Method - Learn By Example

Counts occurrences of a substring

Usage

The count() method returns the number of times the substring sub appears in the string.

You can limit the search by specifying optional arguments start and end.

string.count(sub,start,end)

Python string count() method parameters
Parameter	Condition	Description
sub	Required	Any string you want to search for
start	Optional	An index specifying where to start the search. Default is 0.
end	Optional	An index specifying where to stop the search. Default is the end of the string.

# Count occurrences of 'Big' in the string
S = 'Big, Bigger, Biggest'
x = S.count('Big')
print(x)
# Prints 3

If you want to search the string from the middle, specify the start parameter.

# Count occurrences of 'Big' from 5th character
S = 'Big, Bigger, Biggest'
x = S.count('Big',5)
print(x)
# Prints 2

You can specify where to stop the count() search with end parameter.

# Count occurrences of 'Big' between 5th to 13th character
S = 'Big, Bigger, Biggest'
x = S.count('Big',5,13)
print(x)
# Prints 1

Optional arguments start and end are interpreted as in slice notation.

Meaning, S.count('Big',5,13) is similar to S[5:13].count('Big')