PythonLists and tuples
list.
Counts how many times a value occurs in a list.
- Returns
- The number of occurrences.
- Changes the original
- No
Example
#Python
answers = ["A", "C", "A", "B", "A"]
print(answers.count("A"))
print(answers.count("D"))
print([1, 1.0, True].count(1))Resultsaved result, you can check it
3
0
3
Definition and usage
#The count(x) method returns the number of items equal to x. When the value is not in the list, the result is 0.
The comparison uses ==, so 1 and 1.0 are treated as equal, and True counts as 1.
To count every distinct value at once, collections.Counter is a better choice, since it does it in a single pass instead of calling count() for each value.
Syntax
#Syntax
list.count(value)Parameters
#value
any value
The value to count.
Good practices
#- To count every value, use
Counter(my_list). - Remember that
True == 1in Python, which affects counting in lists with mixed types.
Related entries
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