ncoghlan

Using ?it as a statement local symbolic reference

Core concept

• (?it=expr) is a new atomic expression for an "it reference binding"
• subsequent subexpressions (in execution order) can reference the bound subexpression using ?it (an "it reference")
• ?it is reset between statements, including before entering the suite within a compound statement (if you want a persistent binding, use a named variable)

ncoghlan

>>> class C:
...    def example(self): pass
... 
>>> import pickle
>>> data = pickle.dumps(C.example)
>>> pickle.loads(C.example)
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: a bytes-like object is required, not 'function'
>>> pickle.loads(data)