Python String count()

 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.

Also Read:

• Python Program to Count the Number of Occurrence of a Character in String
• Python String index()