df_g1[["09-12-2013","14-09-2013","16-09-2013","18-09-2013","20-09-2013","22-09-2013"]].replace(["Removed","removed"],np.NaN,inplace=True)
DataFrame Replace Not working on Multi Columns
Pulkit
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1 Answers
Remove the parameter inplace=True in pandas.Series.replace and re-assign your columns :
cols = ["09-12-2013","14-09-2013","16-09-2013","18-09-2013","20-09-2013","22-09-2013"]
df_g1[cols] = df_g1[cols].replace(["Removed","removed"],np.NaN)
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