count rows with nan pandas code example
Example 1: count nan pandas
#Python, pandas
#Count missing values for each column of the dataframe df
df.isnull().sum()
Example 2: number of columns with no missing values
null_cols = df.columns[df.isnull().all()]
df.drop(null_cols, axis = 1, inplace = True)
Example 3: pandas count number missing values
dfObj.isnull().sum()
Example 4: count rows with nan pandas
np.count_nonzero(df.isnull().values)
np.count_nonzero(df.isnull()) # also works
Example 5: number of columns with no missing values
df = df[df.columns[~df.isnull().all()]]
Example 6: pandas count number missing values
dfObj.isnull().sum().sum()