Home Original page

[Python-Dev] Compiler treats None both as a constant and variable

Raymond Hettinger Raymond Hettinger" <python@rcn.com
Sat, 29 Mar 2003 16:02:10 -0500 
>>> def f():
 None  

>>> dis(f)
2           0 LOAD_GLOBAL              0 (None)
              3 POP_TOP             
              4 LOAD_CONST               0 (None)
              7 RETURN_VALUE 

>>> None = 1
<stdin>:1: SyntaxWarning: assignment to None
>>> f() == None
False


Is this a bug?
Should the compiler use the GLOBAL in both places?
Or, is it reasonable to use CONST in both places?


Raymond Hettinger