[New-bugs-announce] [issue27016] BlockingIOError not raised inside function.

[padraic cunningham]

New submission from padraic cunningham:

When the following code snippets are run from two separate shells, the code inside the function does not raise any error on the second call while the second snippet successfully raises a BlockingIOError on the second run: 


# No error raised.
def func():
    lockfile = open('lockfile', 'w')
    fcntl.flock(lockfile, fcntl.LOCK_EX | fcntl.LOCK_NB)
    input() # no error raised, can be sleep etc..


func()

# Error raised.
lockfile = open('lockfile', 'w')
fcntl.flock(lockfile, fcntl.LOCK_EX | fcntl.LOCK_NB)
input() # no error raised

----------
components: IO
messages: 265501
nosy: pcunningham80 at gmail.com
priority: normal
severity: normal
status: open
title: BlockingIOError not raised inside function.
type: behavior
versions: Python 3.4

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue27016>
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