Python | Operator.countOf
Last Updated :
30 Sep, 2019
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 occurrences
Returns: Count of number of occurrences of value.
Example #1: Use Operator.countOf()
to count the number of occurrences of given value 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 ))
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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.
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 ))
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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.
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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