value count a list python
from collections import Counter
z = ['blue', 'red', 'blue', 'yellow', 'blue', 'red']
Counter(z)
>>> Counter({'blue': 3, 'red': 2, 'yellow': 1})value count a list python
from collections import Counter
z = ['blue', 'red', 'blue', 'yellow', 'blue', 'red']
Counter(z)
>>> Counter({'blue': 3, 'red': 2, 'yellow': 1})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)
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