count number of times value appears in list python code example

Example 1: count how many times a value shows in python list

#use count():
>>> my_list = [1, 2, 3, 1, 4]
>>> print(my_list.count(1))
2

#OR, you can also use counter:
>>> from collections import Counter
>>> z = ['blue', 'red', 'blue', 'yellow', 'blue', 'red']
>>> Counter(z)
Counter({'blue': 3, 'red': 2, 'yellow': 1})

Example 2: How to see how many times somting is in a list python

vowels = ['a', 'e', 'i', 'o', 'i', 'u']
count = vowels.count('i')

Example 3: how to find the number of times a number appears in python

dict((i, a.count(i)) for i in a)

Example 4: python find number of occurrences in list

student_grades = [9.1, 8.8, 10.0, 7.7, 6.8, 8.0, 10.0, 8.1, 10.0, 9.9]

samebnumber = student_grades.count(10.0)

print(samebnumber)

Example 5: count how many times a value appears in array python

>>> [1, 2, 3, 4, 1, 4, 1].count(1)
3