Answers for "count occurences of a variable python"

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

python - count number of occurence in a column

print df
  col1 education
0    a       9th
1    b       9th
2    c       8th

len(df[df['education'] == '9th'])