New submission from Xinmeng Xia <[email protected]>:
Let's see the following program:
============================
def foo():
try:
yield
except:
yield from foo()
for m in foo():
print(i)
===========================
Expected output:
On line"print(i)", NameError: name 'i' is not defined
However, the program will fall into infinite loops when running it on Python
3.7-3.10 with the error messages like the following.(no infinite loop on Python
3.5 and Python 3.6)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/home/xxm/Desktop/nameChanging/report/test1.py", line 160, in <module>
print(i)
RuntimeError: generator ignored GeneratorExit
Exception ignored in: <generator object foo at 0x7fb30ff639e0>
Traceback (most recent call last):
File "/home/xxm/Desktop/nameChanging/report/test1.py", line 160, in <module>
print(i)
RuntimeError: generator ignored GeneratorExit
Exception ignored in: <generator object foo at 0x7fb30ff63a50>
Traceback (most recent call last):
File "/home/xxm/Desktop/nameChanging/report/test1.py", line 160, in <module>
print(i)
RuntimeError: generator ignored GeneratorExit
Exception ignored in: <generator object foo at 0x7fb30ff63ac0>
Traceback (most recent call last):
File "/home/xxm/Desktop/nameChanging/report/test1.py", line 160, in <module>
print(i)
......
----------------------------------------------------------------------
----------
components: Interpreter Core
messages: 383882
nosy: xxm
priority: normal
severity: normal
status: open
title: infinite loop resulted by "yield"
type: crash
versions: Python 3.10, Python 3.7, Python 3.8, Python 3.9
_______________________________________
Python tracker <[email protected]>
<https://bugs.python.org/issue42762>
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