When it is required to search the frequency of a number in a list, a method is defined, that takes a list and the number. It iterates through the list, and every time the number is encountered, the counter is incremented.
Below is the demonstration of the same −
Example
def count_num(my_list, x_val):
my_counter = 0
for elem in my_list:
if (elem == x_val):
my_counter = my_counter + 1
return my_counter
my_list = [ 66, 26, 48, 140, 66, 20, 1, 96, 86]
print("The list is :")
print(my_list)
occ_number = 66
print('{} has occurred {} times'.format(occ_number, count_num(my_list, occ_number)))Output
The list is : [66, 26, 48, 140, 66, 20, 1, 96, 86] 66 has occurred 2 times
Explanation
A method named ‘count_number’ is defined, that takes a list and a number as parameter.
The list is iterated over, and if any element matches the number, the counter is incremented.
The counter is returned as result of the function.
Outside the function, a list is defined, and is displayed on the console.
The number is defined, and the method is called by passing these parameters.
The output is displayed on the console.