some new features

.venv/lib/python3.12/site-packages/statsmodels/tsa/arima_model.py

@@ -0,0 +1,66 @@
+"""
+See statsmodels.tsa.arima.model.ARIMA and statsmodels.tsa.SARIMAX.
+"""
+
+ARIMA_DEPRECATION_ERROR = """
+statsmodels.tsa.arima_model.ARMA and statsmodels.tsa.arima_model.ARIMA have
+been removed in favor of statsmodels.tsa.arima.model.ARIMA (note the .
+between arima and model) and statsmodels.tsa.SARIMAX.
+
+statsmodels.tsa.arima.model.ARIMA makes use of the statespace framework and
+is both well tested and maintained. It also offers alternative specialized
+parameter estimators.
+"""
+
+
+class ARMA:
+    """
+    ARMA has been deprecated in favor of the new implementation
+
+    See Also
+    --------
+    statsmodels.tsa.arima.model.ARIMA
+        ARIMA models with a variety of parameter estimators
+    statsmodels.tsa.statespace.SARIMAX
+        SARIMAX models estimated using MLE
+    """
+
+    def __init__(self, *args, **kwargs):
+        raise NotImplementedError(ARIMA_DEPRECATION_ERROR)
+
+
+class ARIMA(ARMA):
+    """
+    ARIMA has been deprecated in favor of the new implementation
+
+    See Also
+    --------
+    statsmodels.tsa.arima.model.ARIMA
+        ARIMA models with a variety of parameter estimators
+    statsmodels.tsa.statespace.SARIMAX
+        SARIMAX models estimated using MLE
+    """
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+
+
+class ARMAResults:
+    """
+    ARMA has been deprecated in favor of the new implementation
+
+    See Also
+    --------
+    statsmodels.tsa.arima.model.ARIMA
+        ARIMA models with a variety of parameter estimators
+    statsmodels.tsa.statespace.SARIMAX
+        SARIMAX models estimated using MLE
+    """
+
+    def __init__(self, *args, **kwargs):
+        raise NotImplementedError(ARIMA_DEPRECATION_ERROR)
+
+
+class ARIMAResults(ARMAResults):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)