feat: add timeframe_to_DateOffset

freqtrade/data/converter/orderflow.py

@@ -50,6 +50,33 @@ def _init_dataframe_with_trades_columns(dataframe: pd.DataFrame):
         dataframe[column] = dataframe[column].astype(object)
 
 
+def timeframe_to_DateOffset(timeframe: str) -> pd.DateOffset:
+    """
+    Translates the timeframe interval value written in the human readable
+    form ('1m', '5m', '1h', '1d', '1w', etc.) to the number
+    of seconds for one timeframe interval.
+    """
+    from freqtrade.exchange import (
+        timeframe_to_seconds,
+    )
+
+    timeframe_seconds = timeframe_to_seconds(timeframe)
+    timeframe_minutes = timeframe_seconds // 60
+    if timeframe_minutes < 1:
+        return pd.DateOffset(seconds=timeframe_seconds)
+    elif 59 < timeframe_minutes < 1440:
+        return pd.DateOffset(hours=timeframe_minutes // 60)
+    elif 1440 <= timeframe_minutes < 10080:
+        return pd.DateOffset(days=timeframe_minutes // 1440)
+    elif 10000 < timeframe_minutes < 43200:
+        return pd.DateOffset(weeks=1)
+    elif timeframe_minutes >= 43200 and timeframe_minutes < 525600:
+        return pd.DateOffset(months=1)
+    elif timeframe == "1y":
+        return pd.DateOffset(years=1)
+    else:
+        return pd.DateOffset(minutes=timeframe_minutes)
+
 def _calculate_ohlcv_candle_start_and_end(df: pd.DataFrame, timeframe: str):
     from freqtrade.exchange import timeframe_to_next_date, timeframe_to_resample_freq
 

tests/data/test_converter_orderflow.py

@@ -6,6 +6,7 @@ from freqtrade.constants import DEFAULT_TRADES_COLUMNS
 from freqtrade.data.converter import populate_dataframe_with_trades
 from freqtrade.data.converter.orderflow import (
     ORDERFLOW_ADDED_COLUMNS,
+    timeframe_to_DateOffset,
     trades_to_volumeprofile_with_total_delta_bid_ask,
 )
 from freqtrade.data.converter.trade_converter import trades_list_to_df
@@ -564,3 +565,14 @@ def test_analyze_with_orderflow(
 
     lastval_of2 = df2.at[len(df2) - 1, "orderflow"]
     assert isinstance(lastval_of2, dict)
+
+
+def test_timeframe_to_DateOffset():
+    assert timeframe_to_DateOffset("1s") == pd.DateOffset(seconds=1)
+    assert timeframe_to_DateOffset("1m") == pd.DateOffset(minutes=1)
+    assert timeframe_to_DateOffset("5m") == pd.DateOffset(minutes=5)
+    assert timeframe_to_DateOffset("1h") == pd.DateOffset(hours=1)
+    assert timeframe_to_DateOffset("1d") == pd.DateOffset(days=1)
+    assert timeframe_to_DateOffset("1w") == pd.DateOffset(weeks=1)
+    assert timeframe_to_DateOffset("1M") == pd.DateOffset(months=1)
+    assert timeframe_to_DateOffset("1y") == pd.DateOffset(years=1)