Create TrueRange.py

indicators/TrueRange.py

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+import pandas as pd
+import talib
+
+def TrueRange(dataframe):
+    """
+    Calculate True Range (TR) for a given pandas DataFrame.
+
+    Args:
+        dataframe (pd.DataFrame): DataFrame with columns ['high', 'low', 'open', 'close', 'volume'].
+
+    Returns:
+        pd.Series: True Range values.
+    """
+    df = dataframe.copy()
+
+    # Initialize True Range buffer
+    true_range = [0.0] * len(df)
+
+    for i in range(len(df)):
+        cur_high = df['high'][i]
+        cur_low = df['low'][i]
+        close1 = df['close'][i - 1] if i > 0 else df['close'][i]
+
+        true_high = max(close1, cur_high)
+        true_low = min(close1, cur_low)
+
+        tr = true_high - true_low
+        true_range[i] = tr
+
+    return pd.Series(true_range, name='TrueRange')
+
+# Example usage:
+# Replace df with your pandas DataFrame containing columns ['open', 'high', 'low', 'close', 'volume']
+# Call the function as follows:
+# true_range_values = TrueRange(df)