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I have two excel files containing multiple lines of excel from a datalogger, and I need to compare the two files with 3 similar columns (anum,bnum,date,time) but with different column durations, and then save the difference into a third excel file.

***excel file 1:

anum            bnum duration   date     time
02473082424 0969755655  12  2018-08-04  10:53:04
02473082424 02435543470 17  2018-08-04  10:53:04
02473082424 01653559999 19  2018-08-04  10:53:06
02473082424 02437633476 63  2018-08-04  10:52:46
02473082424 02432262638 23  2018-08-04  10:53:26
02473082424 02435537928 40  2018-08-04  10:53:18
02473082424 0936467084  20  2018-08-04  10:53:42

***excel file 2:

   anum       bnum   duration   date     time
    02473082424 0969755655  16  2018-08-04  10:53:04
    02473082424 02435543470 17  2018-08-04  10:53:04
    02473082424 01653559999 23  2018-08-04  10:53:06
    02473082424 02437633476 63  2018-08-04  10:52:46
    02473082424 02432262638 23  2018-08-04  10:53:26
    02473082424 02435537928 10  2018-08-04  10:53:18
    02473082424 0936467084  20  2018-08-04  10:53:42
StephenA
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Phong Doan
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1 Answers1

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You can first read both excel files using pandas.read_excel into two dataframes df1 and df2 Then : 

df1.rename(columns={'duration':'duration1'},inplace=True)
df2.rename(columns={'duration':'duration2'},inplace=True)
df=df1.merge(df2)
df['duration']=df['duration2']-df['duration1']
writer = pd.ExcelWriter(excel_file_3)
df[['anum','bnum','duration','date','time']].to_excel(writer,'Sheet1')
ahmed2512
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