CODEWITHSUNDEEP
pythonpandasprediction
kk Ash
kk Ash

Reputation: 43

: Must pass DataFrame with boolean values only while trying to use to_dict

import pandas as pd
dataset = "C:/Users/ashik swaroop/Desktop/anaconda/Gene Dataset/acancergenecensus.csv"
datacan = pd.read_csv(dataset)
datacan = datacan.fillna(0)
cols_to_retain = datacan[[ "Tumour_Types_Somatic","Tumour_Types_Germline","Mutation_Types","Tissue_Type"]]
cat_dict = datacan[ cols_to_retain ].to_dict( orient = 'records' )

getting an error after running this please help or give suggestion : 

cat_dict = datacan[ cols_to_retain ].to_dict( orient = 'records' )
Traceback (most recent call last):

  File "<ipython-input-47-dde9a2c1af34>", line 1, in <module>
    cat_dict = datacan[ cols_to_retain ].to_dict( orient = 'records' )

  File "C:\Users\ashik swaroop\Anaconda2\lib\site-packages\pandas\core\frame.py", line 2055, in __getitem__
    return self._getitem_frame(key)

  File "C:\Users\ashik swaroop\Anaconda2\lib\site-packages\pandas\core\frame.py", line 2130, in _getitem_frame
    raise ValueError('Must pass DataFrame with boolean values only')

ValueError: Must pass DataFrame with boolean values only

Upvotes: 0

Views: 1530

Answers (1)

jezrael
jezrael

Reputation: 862481

You need change:

cols_to_retain = datacan[[ "Tumour_Types_Somatic","Tumour_Types_Germline","Mutation_Types","Tissue_Type"]]
cat_dict = datacan[ cols_to_retain ].to_dict( orient = 'records' )

to:

cols_to_retain = [ "Tumour_Types_Somatic","Tumour_Types_Germline","Mutation_Types","Tissue_Type"]
cat_dict = datacan[ cols_to_retain ].to_dict( orient = 'records' )

because if select by double [] is is called subset and return filtered DataFrame, not columns names.

Another possible solution is:

df = datacan[[ "Tumour_Types_Somatic","Tumour_Types_Germline","Mutation_Types","Tissue_Type"]]

cat_dict = df.to_dict( orient = 'records' )

Upvotes: 1

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