combine matrix and list in python












0















I have a list and matrix like this:



list = [(a1, b1), (a2, b2), (a3, b3)]

matrix = [1 1 1
0 0 0
1 0 1]


the combination output must be:



result = [(a1, b1) 1 1 1
(a2, b2) 0 0 0
(a3, b3) 1 0 1]


How can I do this elegantly (with no loop)?










share|improve this question























  • @Novak ‘s answer would probably work but there is a reason that loops exist. Unless you were playing code golf I don’t see a reason you shouldn’t use loops.

    – Goldman Lee
    Nov 20 '18 at 7:56






  • 1





    Python doesn't have a built-in matrix type. Your matrix = [...] line is currently not valid Python. Can you update the examples with actual Python code?

    – Hannes Ovrén
    Nov 20 '18 at 7:56











  • @GoldmanLee Avoiding loops is not necessary, but i want to make my code as fast as I can. Because it is competition in my class on the run time

    – Aprilis
    Nov 20 '18 at 8:07













  • @HannesOvrén I know, It isn't the code, just an simple ex

    – Aprilis
    Nov 20 '18 at 8:08











  • So you want SO to win a class competition for you? Then you are at the wrong place.

    – b-fg
    Nov 20 '18 at 8:23


















0















I have a list and matrix like this:



list = [(a1, b1), (a2, b2), (a3, b3)]

matrix = [1 1 1
0 0 0
1 0 1]


the combination output must be:



result = [(a1, b1) 1 1 1
(a2, b2) 0 0 0
(a3, b3) 1 0 1]


How can I do this elegantly (with no loop)?










share|improve this question























  • @Novak ‘s answer would probably work but there is a reason that loops exist. Unless you were playing code golf I don’t see a reason you shouldn’t use loops.

    – Goldman Lee
    Nov 20 '18 at 7:56






  • 1





    Python doesn't have a built-in matrix type. Your matrix = [...] line is currently not valid Python. Can you update the examples with actual Python code?

    – Hannes Ovrén
    Nov 20 '18 at 7:56











  • @GoldmanLee Avoiding loops is not necessary, but i want to make my code as fast as I can. Because it is competition in my class on the run time

    – Aprilis
    Nov 20 '18 at 8:07













  • @HannesOvrén I know, It isn't the code, just an simple ex

    – Aprilis
    Nov 20 '18 at 8:08











  • So you want SO to win a class competition for you? Then you are at the wrong place.

    – b-fg
    Nov 20 '18 at 8:23
















0












0








0








I have a list and matrix like this:



list = [(a1, b1), (a2, b2), (a3, b3)]

matrix = [1 1 1
0 0 0
1 0 1]


the combination output must be:



result = [(a1, b1) 1 1 1
(a2, b2) 0 0 0
(a3, b3) 1 0 1]


How can I do this elegantly (with no loop)?










share|improve this question














I have a list and matrix like this:



list = [(a1, b1), (a2, b2), (a3, b3)]

matrix = [1 1 1
0 0 0
1 0 1]


the combination output must be:



result = [(a1, b1) 1 1 1
(a2, b2) 0 0 0
(a3, b3) 1 0 1]


How can I do this elegantly (with no loop)?







python list matrix






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 20 '18 at 7:43









AprilisAprilis

176




176













  • @Novak ‘s answer would probably work but there is a reason that loops exist. Unless you were playing code golf I don’t see a reason you shouldn’t use loops.

    – Goldman Lee
    Nov 20 '18 at 7:56






  • 1





    Python doesn't have a built-in matrix type. Your matrix = [...] line is currently not valid Python. Can you update the examples with actual Python code?

    – Hannes Ovrén
    Nov 20 '18 at 7:56











  • @GoldmanLee Avoiding loops is not necessary, but i want to make my code as fast as I can. Because it is competition in my class on the run time

    – Aprilis
    Nov 20 '18 at 8:07













  • @HannesOvrén I know, It isn't the code, just an simple ex

    – Aprilis
    Nov 20 '18 at 8:08











  • So you want SO to win a class competition for you? Then you are at the wrong place.

    – b-fg
    Nov 20 '18 at 8:23





















  • @Novak ‘s answer would probably work but there is a reason that loops exist. Unless you were playing code golf I don’t see a reason you shouldn’t use loops.

    – Goldman Lee
    Nov 20 '18 at 7:56






  • 1





    Python doesn't have a built-in matrix type. Your matrix = [...] line is currently not valid Python. Can you update the examples with actual Python code?

    – Hannes Ovrén
    Nov 20 '18 at 7:56











  • @GoldmanLee Avoiding loops is not necessary, but i want to make my code as fast as I can. Because it is competition in my class on the run time

    – Aprilis
    Nov 20 '18 at 8:07













  • @HannesOvrén I know, It isn't the code, just an simple ex

    – Aprilis
    Nov 20 '18 at 8:08











  • So you want SO to win a class competition for you? Then you are at the wrong place.

    – b-fg
    Nov 20 '18 at 8:23



















@Novak ‘s answer would probably work but there is a reason that loops exist. Unless you were playing code golf I don’t see a reason you shouldn’t use loops.

– Goldman Lee
Nov 20 '18 at 7:56





@Novak ‘s answer would probably work but there is a reason that loops exist. Unless you were playing code golf I don’t see a reason you shouldn’t use loops.

– Goldman Lee
Nov 20 '18 at 7:56




1




1





Python doesn't have a built-in matrix type. Your matrix = [...] line is currently not valid Python. Can you update the examples with actual Python code?

– Hannes Ovrén
Nov 20 '18 at 7:56





Python doesn't have a built-in matrix type. Your matrix = [...] line is currently not valid Python. Can you update the examples with actual Python code?

– Hannes Ovrén
Nov 20 '18 at 7:56













@GoldmanLee Avoiding loops is not necessary, but i want to make my code as fast as I can. Because it is competition in my class on the run time

– Aprilis
Nov 20 '18 at 8:07







@GoldmanLee Avoiding loops is not necessary, but i want to make my code as fast as I can. Because it is competition in my class on the run time

– Aprilis
Nov 20 '18 at 8:07















@HannesOvrén I know, It isn't the code, just an simple ex

– Aprilis
Nov 20 '18 at 8:08





@HannesOvrén I know, It isn't the code, just an simple ex

– Aprilis
Nov 20 '18 at 8:08













So you want SO to win a class competition for you? Then you are at the wrong place.

– b-fg
Nov 20 '18 at 8:23







So you want SO to win a class competition for you? Then you are at the wrong place.

– b-fg
Nov 20 '18 at 8:23














1 Answer
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oldest

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0














You can do it with pandas DataFrame:



import pandas as pd

matrix = pd.DataFrame(matrix)

matrix.insert(loc=0, column='new_col', value=new_col)





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    0














    You can do it with pandas DataFrame:



    import pandas as pd

    matrix = pd.DataFrame(matrix)

    matrix.insert(loc=0, column='new_col', value=new_col)





    share|improve this answer




























      0














      You can do it with pandas DataFrame:



      import pandas as pd

      matrix = pd.DataFrame(matrix)

      matrix.insert(loc=0, column='new_col', value=new_col)





      share|improve this answer


























        0












        0








        0







        You can do it with pandas DataFrame:



        import pandas as pd

        matrix = pd.DataFrame(matrix)

        matrix.insert(loc=0, column='new_col', value=new_col)





        share|improve this answer













        You can do it with pandas DataFrame:



        import pandas as pd

        matrix = pd.DataFrame(matrix)

        matrix.insert(loc=0, column='new_col', value=new_col)






        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered Nov 20 '18 at 7:53









        NovakNovak

        1,4151614




        1,4151614
































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