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()