The count()
method returns the number of occurrences of a substring in the given string.
Example
message = 'python is popular programming language'
# number of occurrence of 'p'
print('Number of occurrence of p:', message.count('p'))
# Output: Number of occurrence of p: 4
Syntax of String count
The syntax of count()
method is:
string.count(substring, start=..., end=...)
count() Parameters
count()
method only requires a single parameter for execution. However, it also has two optional parameters:
- substring - string whose count is to be found.
- start (Optional) - starting index within the string where search starts.
- end (Optional) - ending index within the string where search ends.
Note: Index in Python starts from 0, not 1.
count() Return Value
count()
method returns the number of occurrences of the substring in the given string.
Example 1: Count number of occurrences of a given substring
# define string
string = "Python is awesome, isn't it?"
substring = "is"
count = string.count(substring)
# print count
print("The count is:", count)
Output
The count is: 2
Example 2: Count number of occurrences of a given substring using start and end
# define string
string = "Python is awesome, isn't it?"
substring = "i"
# count after first 'i' and before the last 'i'
count = string.count(substring, 8, 25)
# print count
print("The count is:", count)
Output
The count is: 1
Here, the counting starts after the first i
has been encountered, i.e. 7th
index position.
And, it ends before the last i
, i.e. 25th
index position.