pandas count occurrences of certain value in row

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Daniel
26 Jun 2016
1df['sex'].value_counts()
2
source
Nicole
22 Jul 2019
1df['Counts'] = df.groupby(['Color'])['Value'].transform('count')
source
Máximo
27 Jan 2017
1print df
2  col1 education
30    a       9th
41    b       9th
52    c       8th
6
7print df.education == '9th'
80     True
91     True
102    False
11Name: education, dtype: bool
12
13print df[df.education == '9th']
14  col1 education
150    a       9th
161    b       9th
17
18print df[df.education == '9th'].shape[0]
192
20print len(df[df['education'] == '9th'])
212
source
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