changed implementation of square based on @nouiz's comment on my

theano/tensor/basic.py

@@ -2656,10 +2656,9 @@ def round_half_away_from_zero(a):
 def sqr(a):
     """square of a"""
 
+
 #alias to sqr, included to maintain similarity with numpy interface
-def square(a):
-    """square of a"""
-    return sqr(a)
+square = sqr
 
 
 @_scal_elemwise_with_nfunc('sqrt', 1, 1)