Mailman 3 February 2011 - docs

Prime num bug
by Jon 17 Feb '11

17 Feb '11

Hi there The prime number function in 4.4 breaks and continue statements is wrong. Jon Sent from my iPad ____________________________________________________________________________________ 8:00? 8:25? 8:40? Find a flick in no time with the Yahoo! Search movie showtime shortcut. http://tools.search.yahoo.com/shortcuts/#news

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function os.lchmod() does not seem to exist
by Wout van Albada 17 Feb '11

17 Feb '11

Hi, I tried to use the os.lchmod() function documented here: http://docs.python.org/library/os.html#os.lchmod However, it doesn't exist in my version of Python: wout@zoot ~ 549>python Python 2.6.6 (r266:84292, Dec 26 2010, 22:31:48) [GCC 4.4.5] on linux2 Type "help", "copyright", "credits" or "license" for more information. >>> import os >>> os.lchmod('blabla', 0) Traceback (most recent call last): File "<stdin>", line 1, in <module> AttributeError: 'module' object has no attribute 'lchmod' >>> So either the documentation is wrong or my version of Python is bad (in which case I have contact the distributor - Debian). But since the system chmod manual page says that permissions on symbolic links cannot be changed, I figured the function should probably not exist. Best regards, Wout

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Library Reference, asyncore module, basic echo server
by scaven 17 Feb '11

17 Feb '11

Hello Could you please make a little change in Library Reference, asyncore module http://docs.python.org/library/asyncore.html#asyncore-example-basic-echo-se… change self.send(data) to if data!='': self.send(data) this will prevent error messages about sending to a closed client socket thx

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Library Reference, asyncore module, basic HTTP client
by scaven 16 Feb '11

16 Feb '11

re the less important addition to my prev mail in http://docs.python.org/library/asyncore.html#asyncore-example-basic-http-cl… change self.buffer = 'GET %s HTTP/1.0\r\n\r\n' % path to self.buffer = 'GET {0} HTTP/1.0\r\nHOST: {1}\r\n\r\n'.format(path, host) this will get the real page (status 200) instead of "found" (302) page

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BUG: A wrong result of computation in python2.6
by matthew chao 16 Feb '11

16 Feb '11

version: Python 2.6 OS : Windows 7 The variable x below should have been 10(integer) after the expression evaluates. It ,however, gets the value 10.000000000000002 (float) , as follows, -------------------------------------------- >>> x=math.exp ( math.log(10.0)) >>> x 10.000000000000002 >>> x=math.exp ( math.log(10)) >>> x 10.000000000000002 -------------------------------------------- In mathematics, the result is not right.

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insort-insert
by Erden Oktay 16 Feb '11

16 Feb '11

> import bisect >>> scores = [(100, 'perl'), (200, 'tcl'), (400, 'lua'), (500, 'python')] >>> bisect.insort(scores, (300, 'ruby')) >>> scores [(100, 'perl'), (200, 'tcl'), (300, 'ruby'), (400, 'lua'), (500, 'python')] I thought instead of insort you meant insert. erden

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Python 3.2rc2 Documentation
by Lee Savide 16 Feb '11

16 Feb '11

Hello. Just wanted to notify you that the current ePub of the documentation doesn't load properly on Sony Readers. I'm not sure if it's a problem with my device, but for all I know it could be the ePub itself. Just giving you a heads up.

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[issue11218] pattern=None when following documentation for load_tests and unittest.main()
by Martin von Gagern 15 Feb '11

15 Feb '11

New submission from Martin von Gagern <Martin.vGagern(a)gmx.net>: If I follow the documentation at http://docs.python.org/library/unittest.html#unittest.main by putting the following two snippets of code in my module file: def load_tests(loader, standard_tests, pattern='test*.py'): # top level directory cached on loader instance this_dir = os.path.dirname(__file__) package_tests = loader.discover(start_dir=this_dir, pattern=pattern) standard_tests.addTests(package_tests) return standard_tests if __name__ == "__main__": unittest.main() then the application will fail with an obscure error message: ====================================================================== ERROR: __main__ (unittest.loader.LoadTestsFailure) ---------------------------------------------------------------------- TypeError: object of type 'NoneType' has no len() ---------------------------------------------------------------------- Ran 1 test in 0.000s Monkeypatching unittest.loader._make_failed_load_tests to display a stack trace, I got this: Traceback (most recent call last): File "/usr/lib64/python2.7/unittest/loader.py", line 71, in loadTestsFromModule return load_tests(self, tests, None) File "tester.py", line 15, in load_tests package_tests = loader.discover(start_dir=this_dir, pattern=pattern) File "/usr/lib64/python2.7/unittest/loader.py", line 204, in discover tests = list(self._find_tests(start_dir, pattern)) File "/usr/lib64/python2.7/unittest/loader.py", line 247, in _find_tests if not self._match_path(path, full_path, pattern): File "/usr/lib64/python2.7/unittest/loader.py", line 235, in _match_path return fnmatch(path, pattern) File "/usr/lib64/python2.7/fnmatch.py", line 43, in fnmatch return fnmatchcase(name, pat) File "/usr/lib64/python2.7/fnmatch.py", line 75, in fnmatchcase res = translate(pat) File "/usr/lib64/python2.7/fnmatch.py", line 87, in translate i, n = 0, len(pat) TypeError: object of type 'NoneType' has no len() The error is due to the fact that pattern is passed as None to load_tests, but apparently loader.discover doesn't loke a None pattern. I would suggest that a) discover internally translates None to the default of 'test*.py' or b) the documentation is changed to cater for this common use case, i.e. by including a "pattern is None" case distinction in its load_tests snippet. In case b) is implemented but not a), it would be nice to have a more expressive error message by catching the error somewhat sooner. ---------- assignee: docs@python components: Documentation, Library (Lib) files: tester.py messages: 128579 nosy: docs@python, gagern priority: normal severity: normal status: open title: pattern=None when following documentation for load_tests and unittest.main() type: feature request versions: Python 2.7 Added file: http://bugs.python.org/file20763/tester.py _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue11218> _______________________________________

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[issue11208] example misprint in documentation whatsnew/3.2
by July Tikhonov 14 Feb '11

14 Feb '11

New submission from July Tikhonov <july.tikh(a)gmail.com>: >>> list(accumulate(8, 2, 50)) fails. Correct version is >>> list(accumulate([8, 2, 50])) ---------- assignee: docs@python components: Documentation files: whatsnew.3.2.accumulate.example.diff keywords: patch messages: 128529 nosy: docs@python, july priority: normal severity: normal status: open title: example misprint in documentation whatsnew/3.2 versions: Python 3.2, Python 3.3 Added file: http://bugs.python.org/file20757/whatsnew.3.2.accumulate.example.diff _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue11208> _______________________________________

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[issue11209] Example for itertools.count is misleading
by Johannes Ammon 14 Feb '11

14 Feb '11

New submission from Johannes Ammon <johannes.ammon(a)gmail.com>: The example code for itertools.count (http://docs.python.org/library/itertools.html#itertools.count) says # count(2.5, 0.5) -> 3.5 3.0 4.5 ... I think that should read # count(2.5, 0.5) -> 2.5 3.0 3.5 ... ---------- assignee: docs@python components: Documentation messages: 128533 nosy: docs@python, jammon priority: normal severity: normal status: open title: Example for itertools.count is misleading versions: Python 2.7 _______________________________________ Python tracker <report(a)bugs.python.org> <http://bugs.python.org/issue11209> _______________________________________

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