Message190224
Consider the following program:
import io
class A(io.IOBase):
def __init__(self):
self.x = 5
def read(self, limit=-1):
self.x -= 1
if self.x > 0:
return b"5"
return b""
def seek(self, offset, whence=0):
return 0
def write(self, b):
pass
a = A()
a.close()
assert a.__next__() == b"5555"
assert a.readline() == b""
assert a.tell() == 0
These three operations succeed, even though the file is closed. However, these two operations fail:
a.readlines()
a.writelines([])
Why do some of the mixin methods on IOBase call _checkClosed and others don't? |
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Date |
User |
Action |
Args |
2013-05-28 16:31:28 | dwight.guth | set | recipients:
+ dwight.guth |
2013-05-28 16:31:28 | dwight.guth | set | messageid: <1369758688.03.0.231740499906.issue18082@psf.upfronthosting.co.za> |
2013-05-28 16:31:28 | dwight.guth | link | issue18082 messages |
2013-05-28 16:31:27 | dwight.guth | create | |
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