72e735a98644b76208d558c0b85150190594c5b1,statsmodels/tsa/tsatools.py,,add_trend,#,17

Before Change

        if np.any(col_const):
            if has_constant == "raise":
                msg = "x contains a constant. Adding a constant with " \
                      "trend="{0}" is not allowed.".format(trend)
                raise ValueError(msg)
            elif has_constant == "skip":
                columns = columns[1:]
                trendarr = trendarr[:, 1:]

After Change

        if np.any(col_const):
            if has_constant == "raise":
                if x.ndim == 1:
                    base_err = "x is constant."
                else:
                    columns = np.arange(x.shape[1])[col_const]
                    if isinstance(x, pd.DataFrame):
                        columns = x.columns
                    const_cols = ", ".join([str(c) for c in columns])
                    base_err = (
                        "x contains one or more constant columns. Column(s) "
                        f"{const_cols} are constant."
                    )
                msg = (
                    f"{base_err} Adding a constant with trend="{trend}" is not allowed."
                )
                raise ValueError(msg)

Instances