python count the number of zeros in each row of a pandas dataframe

1# Basic syntax:
2(pandas_dataframe == 0).sum(axis=1)
3# Where axis 1 specifies that sum will operate on rows. Use 0 for columns
4
5# Example usage:
6# Create Pandas dataframe:
7import pandas as pd
8pandas_dataframe = pd.DataFrame({'a':[1,0,0,1,3], 
9                                 'b':[0,0,1,0,1], 
10                                 'c':[0,0,0,0,0]})
11	a	b	c
120	1	0	0
131	0	0	0
142	0	1	0
153	1	0	0
164	3	1	0
17
18(pandas_dataframe == 0).sum(axis=1)
190    2
201    3
212    2
223    2
234    1

1df.astype(bool).sum(axis=0)