Python String count() Method

​The count() function returns the number of occurrences of the substring passed to the parameter. The count() function takes three parameters, the first is a substring, the second is the starting index and the third is the last pointer of the range. Beginning and ending are both optional while the substring is required.

string.count(substring, start=…, end=…)

We will use the count() function without the optional ( start ) and ( end ) parameters. We'll just use the substring parameter to find the number of occurrences of a given string.

In the following example we will search for the number of occurrencesundefined The substring represented by the letter (a),

 Example:

 # String to check for duplicates
 string = "learn python With ahmed obaid"
 # Searches the given string for duplicate substrings and returns an integer
 print(string. count("a"))

 The output will be:

 3

 In the following example, we will search for the number of occurrences of the substring represented by the word (of).

 # String to check for duplicates
 string = "The number of occurrences of the substring in the input string"
 # Searches the given string for duplicate substrings and returns an integer
 print(string. count("of"))

 The output will be:

 2

 In the following example, we will use the count() function with optional (start) and (end) parameters.

 Example:

 # String to check for duplicates
 string = "The number of occurrences of the substring in the input string"
 # Counts the number of occurrences of the substring
 # Searches the specified string The specified string between index 0 and 15 and returns an integer
 print(string. count("of", 0, 15)) # returns 1
 # Search the specified string The specified string is between index 0 and 48 and returns an integer
 print(string. count("of", 0, 48)) # returns 2

 The output will be:

 1
 2

 External sources:

 Built-in functions - official Python documentation

 If you have any questions or concerns, leave them in the comments