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 nan values in a column pandas
df.isnull().values.any()check if a value in dataframe is nan
#return a subset of the dataframe where the column name value == NaN
df.loc[df['column name'].isnull() == True]to detect if a data frame has nan values
df.isnull().sum().sum()
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