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Python: Length mismatch error only during Dash execution



The Next CEO of Stack OverflowIs arr.__len__() the preferred way to get the length of an array in Python?How do I get time of a Python program's execution?Split (explode) pandas dataframe string entry to separate rowsHow do I find the length (or dimensions, size) of a numpy matrix in python?pandas combine multiple dataframes or use as updatesHow to iterate over rows in a DataFrame in Pandas?In pandas, how to set_index with using column index instead of referring to column names?Python (Jupyter Notebook) : Pandas copying dataframe index causing length of value not matching length of index errorLength mismatch error for python groupby plotTrying to concat two dataframes on top of each other but having some troubles with index values and length mismatch










0















I have a Dataframe with 1 row. I want to transpose it and give a name to the resulting column:



Have:



a b c
1 2 3


Want:



newname
1
2
3


I have found two ways for achieving this, which run without error when executed alone. However, when executed by a Dash app I get "Length mismatch: Expected axis has 0 elements, new values have 1". How can I fix this?



#Method 1
df = pd.DataFrame(np.array([[1, 2, 3]]), columns=['a', 'b', 'c'])
df.index = ['newname']
df = df.T
df = df.reset_index().newname

#Method 2
df = pd.DataFrame(np.array([[1, 2, 3]]), columns=['a', 'b', 'c'])
df = df.T
df.columns = 'newname'
df = df.reset_index().newname









share|improve this question


























    0















    I have a Dataframe with 1 row. I want to transpose it and give a name to the resulting column:



    Have:



    a b c
    1 2 3


    Want:



    newname
    1
    2
    3


    I have found two ways for achieving this, which run without error when executed alone. However, when executed by a Dash app I get "Length mismatch: Expected axis has 0 elements, new values have 1". How can I fix this?



    #Method 1
    df = pd.DataFrame(np.array([[1, 2, 3]]), columns=['a', 'b', 'c'])
    df.index = ['newname']
    df = df.T
    df = df.reset_index().newname

    #Method 2
    df = pd.DataFrame(np.array([[1, 2, 3]]), columns=['a', 'b', 'c'])
    df = df.T
    df.columns = 'newname'
    df = df.reset_index().newname









    share|improve this question
























      0












      0








      0








      I have a Dataframe with 1 row. I want to transpose it and give a name to the resulting column:



      Have:



      a b c
      1 2 3


      Want:



      newname
      1
      2
      3


      I have found two ways for achieving this, which run without error when executed alone. However, when executed by a Dash app I get "Length mismatch: Expected axis has 0 elements, new values have 1". How can I fix this?



      #Method 1
      df = pd.DataFrame(np.array([[1, 2, 3]]), columns=['a', 'b', 'c'])
      df.index = ['newname']
      df = df.T
      df = df.reset_index().newname

      #Method 2
      df = pd.DataFrame(np.array([[1, 2, 3]]), columns=['a', 'b', 'c'])
      df = df.T
      df.columns = 'newname'
      df = df.reset_index().newname









      share|improve this question














      I have a Dataframe with 1 row. I want to transpose it and give a name to the resulting column:



      Have:



      a b c
      1 2 3


      Want:



      newname
      1
      2
      3


      I have found two ways for achieving this, which run without error when executed alone. However, when executed by a Dash app I get "Length mismatch: Expected axis has 0 elements, new values have 1". How can I fix this?



      #Method 1
      df = pd.DataFrame(np.array([[1, 2, 3]]), columns=['a', 'b', 'c'])
      df.index = ['newname']
      df = df.T
      df = df.reset_index().newname

      #Method 2
      df = pd.DataFrame(np.array([[1, 2, 3]]), columns=['a', 'b', 'c'])
      df = df.T
      df.columns = 'newname'
      df = df.reset_index().newname






      python pandas hyphen






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Mar 21 at 17:04









      KonstantinKonstantin

      579




      579






















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