check nan in row code example

Example 1: dataframe find nan rows

df[df.isnull().any(axis=1)]

Example 2: find nan value in dataframe python

# to mark NaN column as True
df['your column name'].isnull()

Example 3: count rows with nan pandas

np.count_nonzero(df.isnull().values)   
 np.count_nonzero(df.isnull())           # also works