when i excute thi line code absentism_scaler.fit(unscaled_input) it give me error AttributeError: 'CustomScaler' object has no attribute 'copy'

try this ----------------------------------------------------------------------------------------------------- class CustomScaler(BaseEstimator, TransformerMixin): def __init__(self, columns, copy=True, with_mean=True, with_std=True): self.columns = columns self.copy = copy self.with_mean = with_mean self.with_std = with_std def fit(self, X, y=None): self.scaler = StandardScaler(copy= self.copy, with_mean=self.with_mean, with_std=self.with_std) self.scaler.fit(X[self.columns], y) self.mean_ = np.mean(X[self.columns]) self.var_ = np.var(X[self.columns]) return self def transform(self, X, y=None, copy=None): init_col_order = X.columns X_scaled = pd.DataFrame(self.scaler.transform(X[self.columns]), columns=self.columns) X_not_scaled = X.loc[:, ~X.columns.isin(self.columns)] return pd.concat([X_not_scaled, X_scaled], axis=1)[init_col_order] ----------------------------------------------------------------------------------------------- i modified the code from the video using this solution on stack overflow, and it worked. https://stackoverflow.com/questions/70587280/sklearn-attributeerror-customscaler-object-has-no-attribute-copy

Hi Mostafa! Thanks for reaching out. This error stems from the code you've executed previously in your *.ipynb file. We are aware that this may mean that you have made one of potentially a number of errors, but it is not exactly so. From the screenshot you've shared, it seems that you may have not created the unscaled_inputs in the way shown in the course. Therefore, can you please revise/restart the kernel and re-run all cells in the suggested order, to ensure that this variable contains the relevant content? Looking forward to your answer.Best, Tsvetelin

I have encounter same issue. i have followed exactly the same, and also _ _ init _ _ using self.scaler = StandardScaler(copy=copy, with_mean=with_mean, with_std=with_std) maybe due to this FutureWarning?