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Splitting and extracting values from a row?


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0















From the following line, I want to extract the date and time including AM/PM.
But the time part of DateTime is skipped.



 6/1/2018 12:01:11.490 AM HEP.U02.OIL.GOV.P2_RUN <Unit #2>No.2 oil pump runing On "

p=[]
xx = "6/1/2018 12:01:11.490 AM HEP.U02.OIL.GOV.P2_RUN <Unit #2>No.2
oil pump runing On "
new=re.split(r's',xx)
print(new)
p.append(new.pop(0))
p.append(new.pop(1))
print(p)









share|improve this question






























    0















    From the following line, I want to extract the date and time including AM/PM.
    But the time part of DateTime is skipped.



     6/1/2018 12:01:11.490 AM HEP.U02.OIL.GOV.P2_RUN <Unit #2>No.2 oil pump runing On "

    p=[]
    xx = "6/1/2018 12:01:11.490 AM HEP.U02.OIL.GOV.P2_RUN <Unit #2>No.2
    oil pump runing On "
    new=re.split(r's',xx)
    print(new)
    p.append(new.pop(0))
    p.append(new.pop(1))
    print(p)









    share|improve this question


























      0












      0








      0








      From the following line, I want to extract the date and time including AM/PM.
      But the time part of DateTime is skipped.



       6/1/2018 12:01:11.490 AM HEP.U02.OIL.GOV.P2_RUN <Unit #2>No.2 oil pump runing On "

      p=[]
      xx = "6/1/2018 12:01:11.490 AM HEP.U02.OIL.GOV.P2_RUN <Unit #2>No.2
      oil pump runing On "
      new=re.split(r's',xx)
      print(new)
      p.append(new.pop(0))
      p.append(new.pop(1))
      print(p)









      share|improve this question
















      From the following line, I want to extract the date and time including AM/PM.
      But the time part of DateTime is skipped.



       6/1/2018 12:01:11.490 AM HEP.U02.OIL.GOV.P2_RUN <Unit #2>No.2 oil pump runing On "

      p=[]
      xx = "6/1/2018 12:01:11.490 AM HEP.U02.OIL.GOV.P2_RUN <Unit #2>No.2
      oil pump runing On "
      new=re.split(r's',xx)
      print(new)
      p.append(new.pop(0))
      p.append(new.pop(1))
      print(p)






      python pandas csv






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Mar 23 at 23:23









      Anony-Mousse

      59.8k798164




      59.8k798164










      asked Mar 23 at 11:06









      imtiaz ul Hassanimtiaz ul Hassan

      417




      417






















          2 Answers
          2






          active

          oldest

          votes


















          1














          No, time part is there, pop function is the problem, your regex is fine, as can be seen by running source code below (there is no need for pop in this case tbh):



          Simple solution (without pop):



          import re

          xx = (
          "6/1/2018 12:01:11.490 AM HEP.U02.OIL.GOV.P2_RUN <Unit #2>No.2 oil pump runing On"
          )
          new = re.split(r"s", xx)
          print(new[:3])


          Which returns as expected:



          ['6/1/2018', '12:01:11.490', 'AM']


          Why it didn't work?



          When you pop element it is removed from the list. You remove 0 element ('6/1/2018'), new 0 element became the missing date and afterwards you popped first element which is actually AM.



          With popping you would do that to get all three (assumming new is already created as before):



          for _ in range(3):
          print(new.pop(0))





          share|improve this answer

























          • isn't there any other way I can retrieve those values without poping?

            – imtiaz ul Hassan
            Mar 23 at 11:37






          • 1





            Of course there is,updated my answer. It would work with pop as well, though it's totally not needed here IMO.

            – Szymon Maszke
            Mar 23 at 11:39



















          0














          I am not great at regex and there is certainly scope to tighten this regex up but as a first stab assuming your datetime strings have a fixed format. It does not validate the date.



          import re

          xx = "6/1/2018 12:01:11.490 AM HEP.U02.OIL.GOV.P2_RUN <Unit #2>No.2 oil pump runing On "

          p1 = re.compile('(?:d1,2/)2d4s+(?:d2:)2d2.d3s+[AaPp][Mm]')
          p = re.findall(p1, xx)
          print(p)





          share|improve this answer























          • You missed the actual problem with his code and created highly complex regex which does not work any better (only clutters the whole thing and makes it much less readable/understandable by others).

            – Szymon Maszke
            Mar 23 at 11:34












          Your Answer






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          2 Answers
          2






          active

          oldest

          votes








          2 Answers
          2






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          1














          No, time part is there, pop function is the problem, your regex is fine, as can be seen by running source code below (there is no need for pop in this case tbh):



          Simple solution (without pop):



          import re

          xx = (
          "6/1/2018 12:01:11.490 AM HEP.U02.OIL.GOV.P2_RUN <Unit #2>No.2 oil pump runing On"
          )
          new = re.split(r"s", xx)
          print(new[:3])


          Which returns as expected:



          ['6/1/2018', '12:01:11.490', 'AM']


          Why it didn't work?



          When you pop element it is removed from the list. You remove 0 element ('6/1/2018'), new 0 element became the missing date and afterwards you popped first element which is actually AM.



          With popping you would do that to get all three (assumming new is already created as before):



          for _ in range(3):
          print(new.pop(0))





          share|improve this answer

























          • isn't there any other way I can retrieve those values without poping?

            – imtiaz ul Hassan
            Mar 23 at 11:37






          • 1





            Of course there is,updated my answer. It would work with pop as well, though it's totally not needed here IMO.

            – Szymon Maszke
            Mar 23 at 11:39
















          1














          No, time part is there, pop function is the problem, your regex is fine, as can be seen by running source code below (there is no need for pop in this case tbh):



          Simple solution (without pop):



          import re

          xx = (
          "6/1/2018 12:01:11.490 AM HEP.U02.OIL.GOV.P2_RUN <Unit #2>No.2 oil pump runing On"
          )
          new = re.split(r"s", xx)
          print(new[:3])


          Which returns as expected:



          ['6/1/2018', '12:01:11.490', 'AM']


          Why it didn't work?



          When you pop element it is removed from the list. You remove 0 element ('6/1/2018'), new 0 element became the missing date and afterwards you popped first element which is actually AM.



          With popping you would do that to get all three (assumming new is already created as before):



          for _ in range(3):
          print(new.pop(0))





          share|improve this answer

























          • isn't there any other way I can retrieve those values without poping?

            – imtiaz ul Hassan
            Mar 23 at 11:37






          • 1





            Of course there is,updated my answer. It would work with pop as well, though it's totally not needed here IMO.

            – Szymon Maszke
            Mar 23 at 11:39














          1












          1








          1







          No, time part is there, pop function is the problem, your regex is fine, as can be seen by running source code below (there is no need for pop in this case tbh):



          Simple solution (without pop):



          import re

          xx = (
          "6/1/2018 12:01:11.490 AM HEP.U02.OIL.GOV.P2_RUN <Unit #2>No.2 oil pump runing On"
          )
          new = re.split(r"s", xx)
          print(new[:3])


          Which returns as expected:



          ['6/1/2018', '12:01:11.490', 'AM']


          Why it didn't work?



          When you pop element it is removed from the list. You remove 0 element ('6/1/2018'), new 0 element became the missing date and afterwards you popped first element which is actually AM.



          With popping you would do that to get all three (assumming new is already created as before):



          for _ in range(3):
          print(new.pop(0))





          share|improve this answer















          No, time part is there, pop function is the problem, your regex is fine, as can be seen by running source code below (there is no need for pop in this case tbh):



          Simple solution (without pop):



          import re

          xx = (
          "6/1/2018 12:01:11.490 AM HEP.U02.OIL.GOV.P2_RUN <Unit #2>No.2 oil pump runing On"
          )
          new = re.split(r"s", xx)
          print(new[:3])


          Which returns as expected:



          ['6/1/2018', '12:01:11.490', 'AM']


          Why it didn't work?



          When you pop element it is removed from the list. You remove 0 element ('6/1/2018'), new 0 element became the missing date and afterwards you popped first element which is actually AM.



          With popping you would do that to get all three (assumming new is already created as before):



          for _ in range(3):
          print(new.pop(0))






          share|improve this answer














          share|improve this answer



          share|improve this answer








          edited Mar 23 at 11:38

























          answered Mar 23 at 11:32









          Szymon MaszkeSzymon Maszke

          3,1691729




          3,1691729












          • isn't there any other way I can retrieve those values without poping?

            – imtiaz ul Hassan
            Mar 23 at 11:37






          • 1





            Of course there is,updated my answer. It would work with pop as well, though it's totally not needed here IMO.

            – Szymon Maszke
            Mar 23 at 11:39


















          • isn't there any other way I can retrieve those values without poping?

            – imtiaz ul Hassan
            Mar 23 at 11:37






          • 1





            Of course there is,updated my answer. It would work with pop as well, though it's totally not needed here IMO.

            – Szymon Maszke
            Mar 23 at 11:39

















          isn't there any other way I can retrieve those values without poping?

          – imtiaz ul Hassan
          Mar 23 at 11:37





          isn't there any other way I can retrieve those values without poping?

          – imtiaz ul Hassan
          Mar 23 at 11:37




          1




          1





          Of course there is,updated my answer. It would work with pop as well, though it's totally not needed here IMO.

          – Szymon Maszke
          Mar 23 at 11:39






          Of course there is,updated my answer. It would work with pop as well, though it's totally not needed here IMO.

          – Szymon Maszke
          Mar 23 at 11:39














          0














          I am not great at regex and there is certainly scope to tighten this regex up but as a first stab assuming your datetime strings have a fixed format. It does not validate the date.



          import re

          xx = "6/1/2018 12:01:11.490 AM HEP.U02.OIL.GOV.P2_RUN <Unit #2>No.2 oil pump runing On "

          p1 = re.compile('(?:d1,2/)2d4s+(?:d2:)2d2.d3s+[AaPp][Mm]')
          p = re.findall(p1, xx)
          print(p)





          share|improve this answer























          • You missed the actual problem with his code and created highly complex regex which does not work any better (only clutters the whole thing and makes it much less readable/understandable by others).

            – Szymon Maszke
            Mar 23 at 11:34
















          0














          I am not great at regex and there is certainly scope to tighten this regex up but as a first stab assuming your datetime strings have a fixed format. It does not validate the date.



          import re

          xx = "6/1/2018 12:01:11.490 AM HEP.U02.OIL.GOV.P2_RUN <Unit #2>No.2 oil pump runing On "

          p1 = re.compile('(?:d1,2/)2d4s+(?:d2:)2d2.d3s+[AaPp][Mm]')
          p = re.findall(p1, xx)
          print(p)





          share|improve this answer























          • You missed the actual problem with his code and created highly complex regex which does not work any better (only clutters the whole thing and makes it much less readable/understandable by others).

            – Szymon Maszke
            Mar 23 at 11:34














          0












          0








          0







          I am not great at regex and there is certainly scope to tighten this regex up but as a first stab assuming your datetime strings have a fixed format. It does not validate the date.



          import re

          xx = "6/1/2018 12:01:11.490 AM HEP.U02.OIL.GOV.P2_RUN <Unit #2>No.2 oil pump runing On "

          p1 = re.compile('(?:d1,2/)2d4s+(?:d2:)2d2.d3s+[AaPp][Mm]')
          p = re.findall(p1, xx)
          print(p)





          share|improve this answer













          I am not great at regex and there is certainly scope to tighten this regex up but as a first stab assuming your datetime strings have a fixed format. It does not validate the date.



          import re

          xx = "6/1/2018 12:01:11.490 AM HEP.U02.OIL.GOV.P2_RUN <Unit #2>No.2 oil pump runing On "

          p1 = re.compile('(?:d1,2/)2d4s+(?:d2:)2d2.d3s+[AaPp][Mm]')
          p = re.findall(p1, xx)
          print(p)






          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Mar 23 at 11:28









          QHarrQHarr

          41.7k82447




          41.7k82447












          • You missed the actual problem with his code and created highly complex regex which does not work any better (only clutters the whole thing and makes it much less readable/understandable by others).

            – Szymon Maszke
            Mar 23 at 11:34


















          • You missed the actual problem with his code and created highly complex regex which does not work any better (only clutters the whole thing and makes it much less readable/understandable by others).

            – Szymon Maszke
            Mar 23 at 11:34

















          You missed the actual problem with his code and created highly complex regex which does not work any better (only clutters the whole thing and makes it much less readable/understandable by others).

          – Szymon Maszke
          Mar 23 at 11:34






          You missed the actual problem with his code and created highly complex regex which does not work any better (only clutters the whole thing and makes it much less readable/understandable by others).

          – Szymon Maszke
          Mar 23 at 11:34


















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