find nan values in a column pandas
df.isnull().values.any()find nan values in a column pandas
df.isnull().values.any()find nan values in a column pandas
df['your column name'].isnull().sum()python if column is null then
df['real_lastName'] = np.where(df['LastName'].isnull(), df['Middle'], df['LastName'] )
print (df)
FirstName Middle LastName real_lastName
0 Tom Ju NaN Ju
1 Kity NaN Rob RobCopyright © 2021 Codeinu
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