count nan pandas
#Python, pandas
#Count missing values for each column of the dataframe df
df.isnull().sum()count nan pandas
#Python, pandas
#Count missing values for each column of the dataframe df
df.isnull().sum()find position of nan pandas
# position of NaN values in terms of index
df.loc[pandas.isna(df["b"]), :].index
# position of NaN values in terms of rows that cotnain NaN
df.loc[pandas.isna(df["b"]), :]df count missing values
In [5]: df = pd.DataFrame({'a':[1,2,np.nan], 'b':[np.nan,1,np.nan]})
In [6]: df.isna().sum()
Out[6]:
a 1
b 2
dtype: int64Copyright © 2021 Codeinu
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