Python pandas dataframe: get number of columns

Question

How do you programmatically retrieve the number of columns in a pandas data frame? I was hoping for something like:

df.num_columns 

Answer 1

Same:

 import pandas as pd df = pd.DataFrame({"pear": [1,2,3], "apple": [2,3,4], "orange": [3,4,5]}) len(df.columns) 3 

Answer 2

Alternative:

 df.shape[1] 

( df.shape[0] - number of lines)

Answer 3

If the variable containing the dataframe is called df, then:

 len(df.columns) 

sets the number of columns.

And for those who want the number of rows:

 len(df.index) 

For a tuple containing the number of rows and columns:

 df.shape 

Answer 4

This worked for me Len (list (DF)).