According to issue 3150
https://foss.heptapod.net/pypy/pypy/-/issues/3150, this is on purpose,
and brings us into feature compatibility with CPython:
Python 3.8.6 | packaged by conda-forge | (default, Oct 7 2020, 19:08:05)
[GCC 7.5.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import pickle
>>> def f():
... yield 10
...
>>> gen = f()
>>> pickle.dumps(gen)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: cannot pickle 'generator' object
I guess we could improve the error message to be more helpful. Do you
have a concrete use case for this?
Matti.
On 12/11/20 1:55 PM, Ioannis Foufoulas wrote:
Hi,
While in PyPy was possible to pickle a generator function and resume after
unpicking this does not happen with PyPy3:
File "/snap/pypy3/72/lib-python/3/pickle.py", line 942, in save_global
(obj, module_name, name))
pickle.PicklingError: Can't pickle <class 'generator'>: it's not found as
builtins.generator
Is this a bug or this feature is removed in PyPy3?
Thanks,
Yannis
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