Как получить сумму значений NAN в фарма
#where A is the name of the column
#where df is the name of the dataframe
count = df["A"].isna().sum()
Determined Dragonfly
#where A is the name of the column
#where df is the name of the dataframe
count = df["A"].isna().sum()In [1]: s = pd.Series([1,2,3, np.nan, np.nan])
In [4]: s.isna().sum() # or s.isnull().sum() for older pandas versions
Out[4]: 2