how to remove strings in pandas












0















i have a column of pandas have data like following string




=COUNTIF(sheet1!AS:AS,"YES-ZH")+COUNTIF(sheet1!AU:AU,"YES-ZH")+COUNTIF(sheet1!AR:AR,"YES-ZH")+COUNTIF(sheet1!AT:AT,"YES-ZH")



i'm trying to use apply(lambda s: s.replace()) to remove all no necessary strings one by one.
but there a problem, the COUNTIF formula it's not fixed 4 sets. it's random
therefore it cause to the excel sheet column range like sheet1!AT:AT are random too.



i also use




Pattern3 = re.compile('([a-zA-Z]+)(\:)([a-zA-Z]+)')
xxx['formula']=xxx['formula'].apply(lambda s: s.replace( Pattern3.search(s).group(1) ,''))



but it can only remove 1st one.



hope the result of the xxx['formula'] can be



sheet1,YES-ZH,sheet1,YES-ZH,sheet1,YES-ZH,sheet1,YES-ZH









share|improve this question

























  • Your example uses Pattern3 and Pattern2 - is that a typo? If not, that may be the problem.

    – 576i
    Nov 24 '18 at 13:28











  • yes it's typo here. it's not impact the problem , i will revise.

    – Ian Y
    Nov 24 '18 at 16:54
















0















i have a column of pandas have data like following string




=COUNTIF(sheet1!AS:AS,"YES-ZH")+COUNTIF(sheet1!AU:AU,"YES-ZH")+COUNTIF(sheet1!AR:AR,"YES-ZH")+COUNTIF(sheet1!AT:AT,"YES-ZH")



i'm trying to use apply(lambda s: s.replace()) to remove all no necessary strings one by one.
but there a problem, the COUNTIF formula it's not fixed 4 sets. it's random
therefore it cause to the excel sheet column range like sheet1!AT:AT are random too.



i also use




Pattern3 = re.compile('([a-zA-Z]+)(\:)([a-zA-Z]+)')
xxx['formula']=xxx['formula'].apply(lambda s: s.replace( Pattern3.search(s).group(1) ,''))



but it can only remove 1st one.



hope the result of the xxx['formula'] can be



sheet1,YES-ZH,sheet1,YES-ZH,sheet1,YES-ZH,sheet1,YES-ZH









share|improve this question

























  • Your example uses Pattern3 and Pattern2 - is that a typo? If not, that may be the problem.

    – 576i
    Nov 24 '18 at 13:28











  • yes it's typo here. it's not impact the problem , i will revise.

    – Ian Y
    Nov 24 '18 at 16:54














0












0








0








i have a column of pandas have data like following string




=COUNTIF(sheet1!AS:AS,"YES-ZH")+COUNTIF(sheet1!AU:AU,"YES-ZH")+COUNTIF(sheet1!AR:AR,"YES-ZH")+COUNTIF(sheet1!AT:AT,"YES-ZH")



i'm trying to use apply(lambda s: s.replace()) to remove all no necessary strings one by one.
but there a problem, the COUNTIF formula it's not fixed 4 sets. it's random
therefore it cause to the excel sheet column range like sheet1!AT:AT are random too.



i also use




Pattern3 = re.compile('([a-zA-Z]+)(\:)([a-zA-Z]+)')
xxx['formula']=xxx['formula'].apply(lambda s: s.replace( Pattern3.search(s).group(1) ,''))



but it can only remove 1st one.



hope the result of the xxx['formula'] can be



sheet1,YES-ZH,sheet1,YES-ZH,sheet1,YES-ZH,sheet1,YES-ZH









share|improve this question
















i have a column of pandas have data like following string




=COUNTIF(sheet1!AS:AS,"YES-ZH")+COUNTIF(sheet1!AU:AU,"YES-ZH")+COUNTIF(sheet1!AR:AR,"YES-ZH")+COUNTIF(sheet1!AT:AT,"YES-ZH")



i'm trying to use apply(lambda s: s.replace()) to remove all no necessary strings one by one.
but there a problem, the COUNTIF formula it's not fixed 4 sets. it's random
therefore it cause to the excel sheet column range like sheet1!AT:AT are random too.



i also use




Pattern3 = re.compile('([a-zA-Z]+)(\:)([a-zA-Z]+)')
xxx['formula']=xxx['formula'].apply(lambda s: s.replace( Pattern3.search(s).group(1) ,''))



but it can only remove 1st one.



hope the result of the xxx['formula'] can be



sheet1,YES-ZH,sheet1,YES-ZH,sheet1,YES-ZH,sheet1,YES-ZH






excel python-3.x pandas dataframe






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 24 '18 at 16:55







Ian Y

















asked Nov 24 '18 at 13:11









Ian YIan Y

13




13













  • Your example uses Pattern3 and Pattern2 - is that a typo? If not, that may be the problem.

    – 576i
    Nov 24 '18 at 13:28











  • yes it's typo here. it's not impact the problem , i will revise.

    – Ian Y
    Nov 24 '18 at 16:54



















  • Your example uses Pattern3 and Pattern2 - is that a typo? If not, that may be the problem.

    – 576i
    Nov 24 '18 at 13:28











  • yes it's typo here. it's not impact the problem , i will revise.

    – Ian Y
    Nov 24 '18 at 16:54

















Your example uses Pattern3 and Pattern2 - is that a typo? If not, that may be the problem.

– 576i
Nov 24 '18 at 13:28





Your example uses Pattern3 and Pattern2 - is that a typo? If not, that may be the problem.

– 576i
Nov 24 '18 at 13:28













yes it's typo here. it's not impact the problem , i will revise.

– Ian Y
Nov 24 '18 at 16:54





yes it's typo here. it's not impact the problem , i will revise.

– Ian Y
Nov 24 '18 at 16:54












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