pep8 and fix in python 3 (mixed tab/spaces)

theano/tensor/var.py

@@ -11,7 +11,6 @@ from theano.tensor.utils import hash_from_ndarray
 from theano.tensor.type import TensorType
 
 
-
 class AsTensorError(TypeError):
     """Raised when as_tensor_variable isn't able to create a
     TensorVariable.
@@ -560,13 +559,16 @@ class _tensor_py_operators:
     def swapaxes(self, axis1, axis2):
         """Return 'tensor.swapaxes(self, axis1, axis2)
 
-        If a matrix is provided with the right axes, its transpose will be returned.
+        If a matrix is provided with the right axes, its transpose
+        will be returned.
+
         """
         return theano.tensor.basic.swapaxes(self, axis1, axis2)
 
     def fill(self, value):
-	"""Fill inputted tensor with the assigned value"""
-	return theano.tensor.basic.fill(self, value)
+        """Fill inputted tensor with the assigned value"""
+        return theano.tensor.basic.fill(self, value)
+
 
 class TensorVariable(_tensor_py_operators, Variable):
     """Subclass to add the tensor operators to the basic `Variable` class."""