df['sex'].value_counts()
df['Counts'] = df.groupby(['Color'])['Value'].transform('count')
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']) 2