drop all columns with nan pandas code example

Example 1: drop null rows pandas

df.dropna()

Example 2: dropping nan in pandas dataframe

df.dropna(subset=['name', 'born'])

Example 3: drop columns with nan pandas

>>> df.dropna(axis='columns')
       name
0    Alfred
1    Batman
2  Catwoman

Example 4: drop na pandas

>>> df.dropna(subset=['name', 'born'])
       name        toy       born
1    Batman  Batmobile 1940-04-25