pd count how many item occurs in another column
df['Counts'] = df.groupby(['Color'])['Value'].transform('count')
pd count how many item occurs in another column
df['Counts'] = df.groupby(['Color'])['Value'].transform('count')
how to count special values in data in python
df['sex'].value_counts(normalize=True)
how to count special values in data in python
df['fare'].value_counts(bins=7)
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