New submission from Robin:
reproduction script below. In the last print statement, it shows me a list with
items in it, but with a length of 0
def generator():
l = []
yield l
l.append(1)
# this correctly prints 1
print(len(l))
# this should print [([1], 1)], but actually gives [([1], 0)]
print([(l, len(l)) for l in generator()])
----------
components: Interpreter Core
messages: 272151
nosy: robinh
priority: normal
severity: normal
status: open
title: List reports incorrect length if modifed after yield
type: behavior
versions: Python 3.4
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Python tracker <[email protected]>
<http://bugs.python.org/issue27707>
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