What is the output of the following code?
import pandas as pd df1 = pd.DataFrame({   'A': [1, 2],
'B': ['x', 'y']   }) df2 = pd.DataFrame({ 'A': [3, 4],
'B': ['z', 'w']   }) result = pd.concat([df1, df2], ignore_index=True) print(result)

Question

What is the output of the following code? 
 import pandas as pd df1 = pd.DataFrame({   'A': [1, 2], 
                                         'B': ['x', 'y']   })  df2 = pd.DataFrame({   'A': [3, 4], 
                                         'B': ['z', 'w']   })  result = pd.concat([df1, df2], ignore_index=True) print(result)

Answer

A       B       A      B 
 0  1       x       Nan  Nan 
 1  2       y       Nan  Nan 
 2  Nan  Nan  3  z 
 3  Nan  Nan  4  w 
 ----------------

Answer

A  B 
 0  1  x 
 1  2  y 
 2  3  z 
 3  4  w 
 ----------------

Answer

A  B 
 0  1  x 
 1  2  y 
 0  3  z 
 1  4  w ----------------

Answer

concat() got an unexpected keyword argument 'ignore_index'

Crowdly

What is the output of the following code? import pandas as pd df1 = pd.DataFra...

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