Python String count() Method with Examples

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In the previous article, we have discussed Python String translate() Method with Examples
String count() Method in Python:

The count() method returns the number of occurrences of a specified value in the string.

Syntax:

string.count(value, start, end)

Parameters

value: This is Required. It is a string The value to look for in the string.

start: This is optional. It is an integer. The starting point for the search. The default value is 0.

end: This is optional. It is an integer. The ending point for the search. The default value is the end of the string.

Return Value:

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

Examples:

Example1:

Input:

Given string = "hello this is btechgeeks.good morning btechgeeks"
Given value = "btechgeeks"

Output:

The no of occurences of { btechgeeks } in a given string =  2

Example2:

Input:

Given string = "good morning btechgeeks good"
Given value = "o"
start position = 1
end position = 13

Output:

The no of occurences of { o } in a given string =  3

String count() Method with Examples in Python

Method #1: Using Built-in Functions (Static Input)

1)Without giving start and end positions

Approach:

  • Give the string as static input and store it in a variable.
  • Give the value as static input and store it in another variable.
  • Pass the given value as an argument to the count() function for the given string to count the number of times the given value occurred in a given string.
  • Store it in another variable.
  • Print the count of the number of times the given value occurred in a given string.
  • The Exit of the program.

Below is the implementation:

# Give the string as static input and store it in a variable.
gvn_str = "hello this is btechgeeks.good morning btechgeeks"
# Give the value as static input and store it in another variable.
gvn_valu = "btechgeeks"
# Pass the given value as an argument to the count() function for the given
# string to count the number of times the given value occurred in a given string.
# Store it in another variable.
rslt_cnt = gvn_str.count(gvn_valu)
# Print the count of the number of times the given value occurred in
# a given string.
print("The no of occurences of {", gvn_valu, "} in a given string = ", rslt_cnt)

Output:

The no of occurences of { btechgeeks } in a given string =  2
2)With giving start and end positions

Approach:

  • Give the string as static input and store it in a variable.
  • Give the value as static input and store it in another variable.
  • Give the start position as static input and store it in another variable.
  • Give the end position as static input and store it in another variable.
  • Pass the given value, start and end positions as arguments to the count() function for the given string to count the number of times the given value occurred in a given string in the given start and end range.
  • Store it in another variable.
  • Print the count of the number of times the given value occurred in a given string.
  • The Exit of the program.

Below is the implementation:

# Give the string as static input and store it in a variable.
gvn_str = "hello all hello good morning hello"
# Give the value as static input and store it in another variable.
gvn_valu = "hello"
# Give the start position as static input and store it in another variable.
gvn_strtpositn = 6
# Give the end position as static input and store it in another variable.
gvn_endpositn = 16
# Pass the given value, start, end positions as arguments to the count() function
# for the given string to count the number of times the given value occurred in a
# given string in the given start and end range.
# Store it in another variable.
rslt_cnt = gvn_str.count(gvn_valu, gvn_strtpositn, gvn_endpositn)
# Print the count of the number of times the given value occurred in
# a given string.
print("The no of occurences of {", gvn_valu,
      "} in a given string = ", rslt_cnt)

Output:

The no of occurences of { hello } in a given string =  1

Method #2: Using Built-in Functions (User Input)

1)Without giving start and end positions

Approach:

  • Give the string as user input using the input() function and store it in a variable.
  • Give the value as user input using the input() function and store it in another variable.
  • Pass the given value as an argument to the count() function for the given string to count the number of times the given value occurred in a given string.
  • Store it in another variable.
  • Print the count of the number of times the given value occurred in a given string.
  • The Exit of the program.

Below is the implementation:

# Give the string as user input using the input() function and store it in a variable.
gvn_str = input("Enter some Random String = ")
# Give the value as user input using the input() function and store it in another variable.
gvn_valu = input("Enter some Random String(value) = ")
# Pass the given value as an argument to the count() function for the given
# string to count the number of times the given value occurred in a given string.
# Store it in another variable.
rslt_cnt = gvn_str.count(gvn_valu)
# Print the count of the number of times the given value occurred in
# a given string.
print("The no of occurences of {", gvn_valu, "} in a given string = ", rslt_cnt)

Output:

Enter some Random String = welcome to python programs to to all
Enter some Random String(value) = to
The no of occurences of { to } in a given string = 3
2)With giving start and end positions

Approach:

  • Give the string as user input using the input() function and store it in a variable.
  • Give the value as user input using the input() function and store it in another variable.
  • Give the start position as user input using the int(input()) function and store it in another variable.
  • Give the end position as user input using the int(input()) function and store it in another variable.
  • Pass the given value, start and end positions as arguments to the count() function for the given string to count the number of times the given value occurred in a given string in the given start and end range.
  • Store it in another variable.
  • Print the count of the number of times the given value occurred in a given string.
  • The Exit of the program.

Below is the implementation:

# Give the string as user input using the input() function and store it in a variable.
gvn_str = input("Enter some Random String = ")
# Give the value as user input using the input() function and store it in another variable.
gvn_valu = input("Enter some Random String(value) = ")
# Give the start position as user input using the int(input()) function and 
# store it in another variable.
gvn_strtpositn = int(input("Enter some random number = "))
# Give the end position as user input using the int(input()) function and 
# store it in another variable.
gvn_endpositn = int(input("Enter some random number = "))
# Pass the given value, start, end positions as arguments to the count() function
# for the given string to count the number of times the given value occurred in a
# given string in the given start and end range.
# Store it in another variable.
rslt_cnt = gvn_str.count(gvn_valu, gvn_strtpositn, gvn_endpositn)
# Print the count of the number of times the given value occurred in
# a given string.
print("The no of occurences of {", gvn_valu,
      "} in a given string = ", rslt_cnt)

Output:

Enter some Random String = good morning btechgeeks good 
Enter some Random String(value) = o
Enter some random number = 1
Enter some random number = 13
The no of occurences of { o } in a given string = 3

Go through our tutorial and learn about various Python String Method Examples and learn how to apply the knowledge while dealing with strings.