memorized is broken

[jakobkogler]

Neither L, M nor .N works. Probably because of the recent changes with the assign opperator. The following error occurs:

Traceback (most recent call last):
  File "pyth.py", line 498, in <module>
    exec(py_code_line, environment)
  File "<string>", line 1, in <module>
NameError: name 'memoized' is not defined

[isaacg1]

Fixed.