pandas where is nan code example

Example 1: to detect if a data frame has nan values

> df.isnull().any().any()
True

Example 2: to detect if a data frame has nan values

df.isnull().sum().sum()
5

Example 3: choose value none in pandas

pd.isna(your_series) #Return True value when None is found

Example 4: pandas isnull

df.isnull().sum()