how to fill the missing values in pandas code example

Example 1: fill missing values in column pandas with mean

df.fillna(df.mean(), inplace=True)

Example 2: getting the number of missing values in pandas

cols_to_delete = df.columns[df.isnull().sum()/len(df) > .90]
df.drop(cols_to_delete, axis = 1, inplace = True)