Return a header with a conditional statement on a dataframe












0















My data:



Header
Case | PD | PP | 50 | 80 | FW | BA | IA | EA | NA


Case1 | 00 | 23 | 00 | 00 | 21 | 00 | 00 | 00 | 00

Case2 | 00 | 23 | 00 | 00 | 12 | 32 | 14 | 00 | 00




What I want: For every case, I want to return the last header. For example: Case1 would be FW, because FW is the last header with a value (21).



For Case2 it would be "IA", because it is the last header with a value (14).



Right now I have the following:



def getStatus(dataframe):
for index, row in dataframe.iterrows():

def lookup(phase, name):
if phase is not '00':
return name

x = lookup(row['FW'], "FW")
x = lookup(row['BA'], "BA")
x = lookup(row['IA'], "IA")
x = lookup(row['EA'], "EA")
x = lookup(row['NA'], "NA")
x = lookup(row['PP'], "PP")


From a logical view, I thought something like x will do several lookups (def lookup) and always overwrite the value above, if existent.



What I am doing wrong here, what would be a good approach? My approach is not well designed I guess, but I also think a big function with a lot of if and elif is also bad.










share|improve this question



























    0















    My data:



    Header
    Case | PD | PP | 50 | 80 | FW | BA | IA | EA | NA


    Case1 | 00 | 23 | 00 | 00 | 21 | 00 | 00 | 00 | 00

    Case2 | 00 | 23 | 00 | 00 | 12 | 32 | 14 | 00 | 00




    What I want: For every case, I want to return the last header. For example: Case1 would be FW, because FW is the last header with a value (21).



    For Case2 it would be "IA", because it is the last header with a value (14).



    Right now I have the following:



    def getStatus(dataframe):
    for index, row in dataframe.iterrows():

    def lookup(phase, name):
    if phase is not '00':
    return name

    x = lookup(row['FW'], "FW")
    x = lookup(row['BA'], "BA")
    x = lookup(row['IA'], "IA")
    x = lookup(row['EA'], "EA")
    x = lookup(row['NA'], "NA")
    x = lookup(row['PP'], "PP")


    From a logical view, I thought something like x will do several lookups (def lookup) and always overwrite the value above, if existent.



    What I am doing wrong here, what would be a good approach? My approach is not well designed I guess, but I also think a big function with a lot of if and elif is also bad.










    share|improve this question

























      0












      0








      0








      My data:



      Header
      Case | PD | PP | 50 | 80 | FW | BA | IA | EA | NA


      Case1 | 00 | 23 | 00 | 00 | 21 | 00 | 00 | 00 | 00

      Case2 | 00 | 23 | 00 | 00 | 12 | 32 | 14 | 00 | 00




      What I want: For every case, I want to return the last header. For example: Case1 would be FW, because FW is the last header with a value (21).



      For Case2 it would be "IA", because it is the last header with a value (14).



      Right now I have the following:



      def getStatus(dataframe):
      for index, row in dataframe.iterrows():

      def lookup(phase, name):
      if phase is not '00':
      return name

      x = lookup(row['FW'], "FW")
      x = lookup(row['BA'], "BA")
      x = lookup(row['IA'], "IA")
      x = lookup(row['EA'], "EA")
      x = lookup(row['NA'], "NA")
      x = lookup(row['PP'], "PP")


      From a logical view, I thought something like x will do several lookups (def lookup) and always overwrite the value above, if existent.



      What I am doing wrong here, what would be a good approach? My approach is not well designed I guess, but I also think a big function with a lot of if and elif is also bad.










      share|improve this question














      My data:



      Header
      Case | PD | PP | 50 | 80 | FW | BA | IA | EA | NA


      Case1 | 00 | 23 | 00 | 00 | 21 | 00 | 00 | 00 | 00

      Case2 | 00 | 23 | 00 | 00 | 12 | 32 | 14 | 00 | 00




      What I want: For every case, I want to return the last header. For example: Case1 would be FW, because FW is the last header with a value (21).



      For Case2 it would be "IA", because it is the last header with a value (14).



      Right now I have the following:



      def getStatus(dataframe):
      for index, row in dataframe.iterrows():

      def lookup(phase, name):
      if phase is not '00':
      return name

      x = lookup(row['FW'], "FW")
      x = lookup(row['BA'], "BA")
      x = lookup(row['IA'], "IA")
      x = lookup(row['EA'], "EA")
      x = lookup(row['NA'], "NA")
      x = lookup(row['PP'], "PP")


      From a logical view, I thought something like x will do several lookups (def lookup) and always overwrite the value above, if existent.



      What I am doing wrong here, what would be a good approach? My approach is not well designed I guess, but I also think a big function with a lot of if and elif is also bad.







      python dataframe if-statement






      share|improve this question













      share|improve this question











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      share|improve this question










      asked Nov 21 '18 at 10:04









      JohnDoleJohnDole

      356




      356
























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