(self, X, y=None)
return self.fit(X, y).transform(X, y)
Apply fit() then transform()
Apply fit() then transform()
Apply fit () then transform ()
def fit_transform(self, X, y=None):
        """
        Apply fit() then transform()
        """
        
        return self.fit(X, y).transform(X, y)
def fit_transform ( self , X , y = None ) : return self . fit ( X , y ) . transform ( X , y )