how to determine the occurace of element in list in pytho code example

Example 1: how to find the number of times a number appears in python

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

Example 2: 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)