python map array to count occurrences code example

Example 1: how to find no of times a elements in list python

thislist = (1, 3, 7, 8, 7, 5, 4, 6, 8, 5)

x = thislist.count(5)

print(x)

Example 2: count occurrence in array python

arr = np.array( [1, 2, 3, 2, 1, 2])
occ = np.count_nonzero(arr==0)
print(occ)
0
occ = np.count_nonzero(arr==1)
print(occ)
2