ENH #304 convert str to tuple for single col_names

README.md

@@ -111,7 +111,7 @@ $ pip install pandas_ta
 
 Latest Version
 --------------
-Best choice! Version: *0.3.00b*
+Best choice! Version: *0.3.01b*
 * Includes all fixes and updates between **pypi** and what is covered in this README.
 ```sh
 $ pip install -U git+https://github.com/twopirllc/pandas-ta

pandas_ta/core.py

@@ -400,6 +400,9 @@ class AnalysisIndicators(BasePandasObject):
             df = self._df
             if df is None or result is None: return
             else:
+                if "col_names" in kwargs and not isinstance(kwargs["col_names"], tuple):
+                    kwargs["col_names"] = (kwargs["col_names"],)
+
                 if isinstance(result, pd.DataFrame):
                     # If specified in kwargs, rename the columns.
                     # If not, use the default names.

setup.py

@@ -19,7 +19,7 @@ setup(
         "pandas_ta.volatility",
         "pandas_ta.volume"
     ],
-    version=".".join(("0", "3", "00b")),
+    version=".".join(("0", "3", "01b")),
     description=long_description,
     long_description=long_description,
     author="Kevin Johnson",

tests/test_strategy.py

@@ -253,6 +253,7 @@ class TestStrategyMethods(TestCase):
             {"kind": "rsi"},  # 1
             {"kind": "macd"},  # 3
             {"kind": "sma", "length": 50},  # 1
+            {"kind": "sma", "length": 100, "col_names": "sma100"},  # 1
             {"kind": "sma", "length": 200 },  # 1
             {"kind": "bbands", "length": 20},  # 3
             {"kind": "log_return", "cumulative": True},  # 1