def engine(self, new_engine):
'''Reset the calculating library (DaPy or Numpy)'''
if is_str(new_engine):
new_engine = str2eng(new_engine)
for func in ('abs', 'dot', 'multiply', 'mean', 'log', 'sum', 'exp'):
assert hasattr(new_engine,
func), "Your engine does't have attribute %s" % func
self._engine = new_engine
if hasattr(self, '_activator'):
self._activator.engine = self._engine
def _check_addr(self, addr, mode):
if is_str(addr):
return open(addr, mode)
return addr