Hi
I am importing 4 columns into a dataframe from a spreadsheet. My goal is to create a 5th column with TRUE or False if column 4 (str) matches column 3. Trying to leverage this answer https://stackoverflow.com/a/35940955/461887 This is my code import pandas as pd xls = pd.ExcelFile("Melbourne.xlsx") df = xls.parse('Sheet1', skiprows= 4) df1 = df[['UID','Name','New Leader','Current Team', 'New Team']] df1['Difference'] = df1['Current Team'].str.lower().str.replace('s/+',"") == df1['New Team'].str.lower().str.replace('s/+',"") Which gives this error C:\Users\u369811\AppData\Local\Continuum\anaconda3\lib\site-packages\ipykernel_launcher.py:6: SettingWithCopyWarning: A value is trying to be set on a copy of a slice from a DataFrame. Try using .loc[row_indexer,col_indexer] = value instead See the caveats in the documentation: http://pandas.pydata.org/pandas-docs/stable/indexing.html#indexing-view-versus-copy If I update the line to use loc as this I still receive a long error. df1['Difference'] = df1.loc['Current Team'].str.lower().str.replace('s/+',"") == df1.loc['New Team'].str.lower().str.replace('s/+',"") What am I missing? Sayth -- https://mail.python.org/mailman/listinfo/python-list