ValueError: could not convert string to float: '[0.0267469, 0.0272395, 0.0268747]'












0















I try a code like this:



import pandas as pd

import numpy as np

test_data='train.csv'

csv_reader = pd.read_csv(test_data)

x_list = csv_reader[['spectra']]

x_list = np.array(x_list)

x = [float(o) for o in x_list[0]]

y_list = csv_reader[['molecule']]


and then I get this:



Traceback (most recent call last):

File "D:/Users/11825/source/repos/deep/shiyishi.py", line 16, in <module>

  x = [float(o) for o in x_list[0]]

File "D:/Users/11825/source/repos/deep/shiyishi.py", line 16, in <listcomp>

  x = [float(o) for o in x_list[0]]

ValueError: could not convert string to float: '[0.0267469, 0.0272395, 

    0.0268747, 0.0267555]'


this is the data's picture:
enter image description here



how i can save it?






python arrays







share|improve this question



























    0















    I try a code like this:



    import pandas as pd
    
import numpy as np
    
test_data='train.csv'
    
csv_reader = pd.read_csv(test_data)
    
x_list = csv_reader[['spectra']]
    
x_list = np.array(x_list)
    
x = [float(o) for o in x_list[0]]
    
y_list = csv_reader[['molecule']]


    and then I get this:



    Traceback (most recent call last):
    
File "D:/Users/11825/source/repos/deep/shiyishi.py", line 16, in <module>
    
  x = [float(o) for o in x_list[0]]
    
File "D:/Users/11825/source/repos/deep/shiyishi.py", line 16, in <listcomp>
    
  x = [float(o) for o in x_list[0]]
    
ValueError: could not convert string to float: '[0.0267469, 0.0272395, 
    
    0.0268747, 0.0267555]'


    this is the data's picture:
    enter image description here



    how i can save it?






    python arrays







    share|improve this question

























      0












      0








      0








      I try a code like this:



      import pandas as pd
      
import numpy as np
      
test_data='train.csv'
      
csv_reader = pd.read_csv(test_data)
      
x_list = csv_reader[['spectra']]
      
x_list = np.array(x_list)
      
x = [float(o) for o in x_list[0]]
      
y_list = csv_reader[['molecule']]


      and then I get this:



      Traceback (most recent call last):
      
File "D:/Users/11825/source/repos/deep/shiyishi.py", line 16, in <module>
      
  x = [float(o) for o in x_list[0]]
      
File "D:/Users/11825/source/repos/deep/shiyishi.py", line 16, in <listcomp>
      
  x = [float(o) for o in x_list[0]]
      
ValueError: could not convert string to float: '[0.0267469, 0.0272395, 
      
    0.0268747, 0.0267555]'


      this is the data's picture:
      enter image description here



      how i can save it?






      python arrays







      share|improve this question














      I try a code like this:



      import pandas as pd
      
import numpy as np
      
test_data='train.csv'
      
csv_reader = pd.read_csv(test_data)
      
x_list = csv_reader[['spectra']]
      
x_list = np.array(x_list)
      
x = [float(o) for o in x_list[0]]
      
y_list = csv_reader[['molecule']]


      and then I get this:



      Traceback (most recent call last):
      
File "D:/Users/11825/source/repos/deep/shiyishi.py", line 16, in <module>
      
  x = [float(o) for o in x_list[0]]
      
File "D:/Users/11825/source/repos/deep/shiyishi.py", line 16, in <listcomp>
      
  x = [float(o) for o in x_list[0]]
      
ValueError: could not convert string to float: '[0.0267469, 0.0272395, 
      
    0.0268747, 0.0267555]'


      this is the data's picture:
      enter image description here



      how i can save it?






      python arrays




      python arrays






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 22 '18 at 2:09









      NealNeal

      82




      82
























          1 Answer
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          1














          The lists stored in column spectra are actually stored as string after you save and load the dataframe.



          Try this right after you do read_csv:



          import ast
          
csv_reader['spectra'].apply(ast.literal_eval)
          
csv_reader['molecule'].apply(ast.literal_eval)





          share|improve this answer























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            1 Answer
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            active

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            active

            oldest

            votes






            active

            oldest

            votes









            1














            The lists stored in column spectra are actually stored as string after you save and load the dataframe.



            Try this right after you do read_csv:



            import ast
            
csv_reader['spectra'].apply(ast.literal_eval)
            
csv_reader['molecule'].apply(ast.literal_eval)





            share|improve this answer




























              1














              The lists stored in column spectra are actually stored as string after you save and load the dataframe.



              Try this right after you do read_csv:



              import ast
              
csv_reader['spectra'].apply(ast.literal_eval)
              
csv_reader['molecule'].apply(ast.literal_eval)





              share|improve this answer


























                1












                1








                1







                The lists stored in column spectra are actually stored as string after you save and load the dataframe.



                Try this right after you do read_csv:



                import ast
                
csv_reader['spectra'].apply(ast.literal_eval)
                
csv_reader['molecule'].apply(ast.literal_eval)





                share|improve this answer













                The lists stored in column spectra are actually stored as string after you save and load the dataframe.



                Try this right after you do read_csv:



                import ast
                
csv_reader['spectra'].apply(ast.literal_eval)
                
csv_reader['molecule'].apply(ast.literal_eval)






                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 22 '18 at 2:14









                Eric WangEric Wang

                33518




                33518
































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