Python | Operator.countOf
Operator.countOf()
is used for counting the number of occurrences of b
in a
. It counts the number of occurrences of value.
Syntax : Operator.countOf(freq = a, value = b)
Parameters :
freq : It can be list or any other data type which store value
value : It is value for which we have to count the number of occurrencesReturns: Count of number of occurrences of value.
Example #1: Use Operator.countOf()
to count the number of occurrences of given value in a list.
# Python program showing # use of countOf() function # in a list from operator import * arr = [ 1 , 2 , 3 , 3 , 3 ] arr1 = [ 'a' , 'b' , 'c' , 'b' , 'd' ] print ( "Number of occurrence of b in arr1 =" , countOf(arr1, "b" )) print ( "Number of occurrence of e in arr1 =" , countOf(arr1, "e" )) print ( "Number of occurrence of 3 in arr =" , countOf(arr, 3 )) |
Output:
Number of occurrence of b in arr1 = 2 Number of occurrence of e in arr1 = 0 Number of occurrence of 3 in arr = 3
Example #2: Use Operator.countOf()
to count the number of occurrences of given value in a dictionary.
# Python program showing # use of countOf() function # in a dictionary from operator import * d = { "score" : 3 , "score1" : 1 , "score2" : 3 , "score3" : 1 , "score4" : 3 } print ( "Number of occurrence of three in dict =" ,countOf(d.values(), 3 )) print ( "Number of occurrence of one in dict =" ,countOf(d.values(), 1 )) print ( "Number of occurrence of four in dict =" ,countOf(d.values(), 4 )) |
Output :
Number of occurrence of three in dict = 3 Number of occurrence of one in dict = 2 Number of occurrence of four in dict = 0
Example #3: Use Operator.countOf()
to count the number of occurrences of given value in a tuples.
# Python program showing # use of countOf() function # in a tuples from operator import * tup = ( 1 , 2 , 3 , 3 , 3 ) tup1 = ( 'a' , 'b' , 'c' , 'b' , 'd' ) print ( "Number of occurrence of b in tuple1 =" ,countOf(tup1, "b" )) print ( "Number of occurrence of e in tuple1 =" ,countOf(tup1, "e" )) print ( "Number of occurrence of 3 in tuple =" ,countOf(tup, 3 )) |
Output :
Number of occurrence of b in tuple1 = 2 Number of occurrence of e in tuple1 = 0 Number of occurrence of 3 in tuple = 3
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