Answers for "how to subtract a value from a column in pandas based on condition"

0

panda - subset based on column value

import pandas as pd
import numpy as np
df = pd.DataFrame({'A': 'foo bar foo bar foo bar foo foo'.split(),
                   'B': 'one one two three two two one three'.split(),
                   'C': np.arange(8), 'D': np.arange(8) * 2})
print(df)
sub_df = df.loc[df['A'] == 'foo'] # Subset based on specific A value
Posted by: Guest on October-16-2020
1

subtract from dataframe column

#To subtract 1 from a specific column of a dataframe
df.column_name.sub(1)
Posted by: Guest on August-06-2021

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