BUG #311 psar dmn iloc[-1] fix

README.md

@@ -110,7 +110,7 @@ $ pip install pandas_ta
 
 Latest Version
 --------------
-Best choice! Version: *0.2.90b*
+Best choice! Version: *0.2.91b*
 ```sh
 $ pip install -U git+https://github.com/twopirllc/pandas-ta
 ```

pandas_ta/trend/psar.py

@@ -20,7 +20,7 @@ def psar(high, low, close=None, af0=None, af=None, max_af=None, offset=None, **k
         # Not to be confused with ta.falling()
         up = high - high.shift(drift)
         dn = low.shift(drift) - low
-        _dmn = (((dn > up) & (dn > 0)) * dn).apply(zero)[-1]
+        _dmn = (((dn > up) & (dn > 0)) * dn).apply(zero).iloc[-1]
         return _dmn > 0
 
     # Falling if the first NaN -DM is positive

setup.py

@@ -19,7 +19,7 @@ setup(
         "pandas_ta.volatility",
         "pandas_ta.volume"
     ],
-    version=".".join(("0", "2", "90b")),
+    version=".".join(("0", "2", "91b")),
     description=long_description,
     long_description=long_description,
     author="Kevin Johnson",