How to put together datas into a file?











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-2
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I would like to collect different type of datas into a file. Here is a part of the code. 



val = str(float(data[-1]))

val_dB = float(val)

val_dB = math.log(val_dB, 10) * 10

myfile = open('../../../MLI_values/mli_value.txt', 'a')

myfile.write(date_ID + " " + val + val_dB + "n")

myfile.close()


But it gives back an error: 



myfile.write(date_ID + " " + val + val_dB + "n")

TypeError: cannot concatenate 'str' and 'float' objects


How can I solve it to put them together? (into columns) into a file?






python







share|improve this question




















  • 3




    Possible duplicate of Cannot concatenate 'str' and 'float' objects?
    – Georgy
    Nov 7 at 9:05















up vote
-2
down vote

favorite












I would like to collect different type of datas into a file. Here is a part of the code. 



val = str(float(data[-1]))

val_dB = float(val)

val_dB = math.log(val_dB, 10) * 10

myfile = open('../../../MLI_values/mli_value.txt', 'a')

myfile.write(date_ID + " " + val + val_dB + "n")

myfile.close()


But it gives back an error: 



myfile.write(date_ID + " " + val + val_dB + "n")

TypeError: cannot concatenate 'str' and 'float' objects


How can I solve it to put them together? (into columns) into a file?






python







share|improve this question




















  • 3




    Possible duplicate of Cannot concatenate 'str' and 'float' objects?
    – Georgy
    Nov 7 at 9:05













up vote
-2
down vote

favorite









up vote
-2
down vote

favorite











I would like to collect different type of datas into a file. Here is a part of the code. 



val = str(float(data[-1]))

val_dB = float(val)

val_dB = math.log(val_dB, 10) * 10

myfile = open('../../../MLI_values/mli_value.txt', 'a')

myfile.write(date_ID + " " + val + val_dB + "n")

myfile.close()


But it gives back an error: 



myfile.write(date_ID + " " + val + val_dB + "n")

TypeError: cannot concatenate 'str' and 'float' objects


How can I solve it to put them together? (into columns) into a file?






python







share|improve this question















I would like to collect different type of datas into a file. Here is a part of the code. 



val = str(float(data[-1]))

val_dB = float(val)

val_dB = math.log(val_dB, 10) * 10

myfile = open('../../../MLI_values/mli_value.txt', 'a')

myfile.write(date_ID + " " + val + val_dB + "n")

myfile.close()


But it gives back an error: 



myfile.write(date_ID + " " + val + val_dB + "n")

TypeError: cannot concatenate 'str' and 'float' objects


How can I solve it to put them together? (into columns) into a file?






python




python






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 7 at 9:04









Nick Parsons

2,2062518




2,2062518










asked Nov 7 at 9:01









Krsztr

12




12








  • 3




    Possible duplicate of Cannot concatenate 'str' and 'float' objects?
    – Georgy
    Nov 7 at 9:05














  • 3




    Possible duplicate of Cannot concatenate 'str' and 'float' objects?
    – Georgy
    Nov 7 at 9:05








3




3




Possible duplicate of Cannot concatenate 'str' and 'float' objects?
– Georgy
Nov 7 at 9:05




Possible duplicate of Cannot concatenate 'str' and 'float' objects?
– Georgy
Nov 7 at 9:05












2 Answers
2






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up vote
0
down vote













Change:



myfile.write(date_ID + " " + val + val_dB + "n")


to:



myfile.write(date_ID + " " + val + " " + str(val_dB) + "n")





share|improve this answer




























    up vote
    0
    down vote













    Apparently your val_dB is a float. If you want to write it you need to convert it into a string str(val_dB)



    However, you can do it implicitely with format method.



    myfile.write("{} {} {}n".format(date_ID, val, val_dB))


    https://www.programiz.com/python-programming/methods/string/format






    share|improve this answer





















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      2 Answers
      2






      active

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      2 Answers
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      up vote
      0
      down vote













      Change:



      myfile.write(date_ID + " " + val + val_dB + "n")


      to:



      myfile.write(date_ID + " " + val + " " + str(val_dB) + "n")





      share|improve this answer

























        up vote
        0
        down vote













        Change:



        myfile.write(date_ID + " " + val + val_dB + "n")


        to:



        myfile.write(date_ID + " " + val + " " + str(val_dB) + "n")





        share|improve this answer























          up vote
          0
          down vote










          up vote
          0
          down vote









          Change:



          myfile.write(date_ID + " " + val + val_dB + "n")


          to:



          myfile.write(date_ID + " " + val + " " + str(val_dB) + "n")





          share|improve this answer












          Change:



          myfile.write(date_ID + " " + val + val_dB + "n")


          to:



          myfile.write(date_ID + " " + val + " " + str(val_dB) + "n")






          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 7 at 9:04









          Paul R

          174k24294452




          174k24294452
























              up vote
              0
              down vote













              Apparently your val_dB is a float. If you want to write it you need to convert it into a string str(val_dB)



              However, you can do it implicitely with format method.



              myfile.write("{} {} {}n".format(date_ID, val, val_dB))


              https://www.programiz.com/python-programming/methods/string/format






              share|improve this answer

























                up vote
                0
                down vote













                Apparently your val_dB is a float. If you want to write it you need to convert it into a string str(val_dB)



                However, you can do it implicitely with format method.



                myfile.write("{} {} {}n".format(date_ID, val, val_dB))


                https://www.programiz.com/python-programming/methods/string/format






                share|improve this answer























                  up vote
                  0
                  down vote










                  up vote
                  0
                  down vote









                  Apparently your val_dB is a float. If you want to write it you need to convert it into a string str(val_dB)



                  However, you can do it implicitely with format method.



                  myfile.write("{} {} {}n".format(date_ID, val, val_dB))


                  https://www.programiz.com/python-programming/methods/string/format






                  share|improve this answer












                  Apparently your val_dB is a float. If you want to write it you need to convert it into a string str(val_dB)



                  However, you can do it implicitely with format method.



                  myfile.write("{} {} {}n".format(date_ID, val, val_dB))


                  https://www.programiz.com/python-programming/methods/string/format







                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered Nov 7 at 9:07









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