how to delete na values in a dataframe
# if you want to delete rows containing NA values
df.dropna(inplace=True)
how to delete na values in a dataframe
# if you want to delete rows containing NA values
df.dropna(inplace=True)
drop column with nan values
fish_frame = fish_frame.dropna(axis = 1, how = 'all')
remove a rows in which three column has nan
df.dropna(subset=['col1', 'col2', 'col3', 'col4', 'col5', 'col6'], how='all', inplace=True)
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