number of times a value occurs in dataframne
df['a'].value_counts()number of times a value occurs in dataframne
df['a'].value_counts()pandas count occurrences of certain value in row
print df
col1 education
0 a 9th
1 b 9th
2 c 8th
print df.education == '9th'
0 True
1 True
2 False
Name: education, dtype: bool
print df[df.education == '9th']
col1 education
0 a 9th
1 b 9th
print df[df.education == '9th'].shape[0]
2
print len(df[df['education'] == '9th'])
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