Updated _resample_timestamp function

Author: captainsafia

pandas/tseries/resample.py

@@ -323,13 +323,12 @@ def _resample_timestamps(self, kind=None):
 
                 result.index = result.index + loffset
 
-        min_base = (type(self.freq))(0)
         base_freq = (type(self.freq))(self.base)
-        if (base_freq < min_base) or (base_freq > self.freq):
+        if (base_freq > self.freq):
             raise Exception("Value of base must be between 0 and {freq}, got "
                     "{base} instead".format(freq=self.freq.n, base=self.base))
 
-        result.index = result.index.shift(self.base, freq = type(self.freq)(1))
+        result.index = result.index.shift(self.base, type(self.freq)(1))
 
         return result