# How to Count Occurrence Frequency of a Particular Number in Python

This example will explain how to count the occurrence frequency of a particular number on the list in Python.

### Source Code

``````#! /usr/bin/env python3
# -*- coding: utf-8 -*-

a = []
b = input('Input a number of quit by typing "q": ')
if b == "q":
print("Quit the system!")
else:
while b != "q":
a.append(int(b))
b = input('Input a number of quit by typing "q": ')
k = 0
n = int(input("Enter the number to be counted: "))
for j in a:
if j == n:
k = k + 1
print("The occurrence frequency of {} is : {}".format(n, k))
``````

Output:

``````Input a number of quit by typing "q": 4
Input a number of quit by typing "q": 6
Input a number of quit by typing "q": 4
Input a number of quit by typing "q": 8
Input a number of quit by typing "q": 4
Input a number of quit by typing "q": 2
Input a number of quit by typing "q": q
Enter the number to be counted: 4
The occurrence frequency of 4 is: 3

Input a number of quit by typing "q": 18
Input a number of quit by typing "q": 16
Input a number of quit by typing "q": 89
Input a number of quit by typing "q": 16
Input a number of quit by typing "q": 23
Input a number of quit by typing "q": 16
Input a number of quit by typing "q": q
Enter the number to be counted: 16
The occurrence frequency of 16 is: 3
``````
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