Fixes Issue #14992: os.makedirs(path, exist_ok=True) would raise an OSError
when the path existed and had the S_ISGID mode bit set when it was
not explicitly asked for. This is no longer an exception as mkdir
cannot control if the OS sets that bit for it or not.
Fixes Issue #14992: os.makedirs(path, exist_ok=True) would raise an OSError
when the path existed and had the S_ISGID mode bit set when it was not
explicitly asked for. This is no longer an exception as mkdir cannot control
if the OS sets that bit for it or not.
Terry Jan Reedy [Sun, 3 Jun 2012 04:27:54 +0000 (00:27 -0400)]
Issue 12510: Expand 2 bare excepts. Improve comments. Change deceptive name
'name' to 'expression' as the latter is what the string actually represents.
The bug in this issue was only catching NameError and AttributeError when
evaluating an expression that was not necessarily a name.
R David Murray [Sat, 2 Jun 2012 21:56:49 +0000 (17:56 -0400)]
#1079: Fix parsing of encoded words.
This is a behavior change: before this leading and trailing spaces were
stripped from ASCII parts, now they are preserved. Without this fix we didn't
parse the examples in the RFC correctly, so I think breaking backward
compatibility here is justified.
Stefan Krah [Thu, 31 May 2012 18:01:05 +0000 (20:01 +0200)]
Improve Underflow handling in the correct-rounding loop. The case for
Underflow to zero hasn't changed: _mpd_qexp() internally uses MIN_EMIN,
so the result would also underflow to zero for all emin > MIN_EMIN.
In case digits are left, the informal argument is as follows: Underflow can
occur only once in the last multiplication of the power stage (in the Horner
stage Underflow provably cannot occur, and if Underflow occurred twice in
the power stage, the result would underflow to zero on the second occasion).
Since there is no double rounding during Underflow, the effective work
precision is now 1 <= result->digits < prec. It can be shown by a somewhat
tedious argument that abs(result - e**x) < ulp(result, result->digits).
Therefore the correct rounding loop now uses ulp(result, result->digits)
to generate the bounds for e**x in case of Underflow.
Issue #14909: A number of places were using PyMem_Realloc() apis and
PyObject_GC_Resize() with incorrect error handling. In case of errors,
the original object would be leaked. This checkin fixes those cases.
Nick Coghlan [Wed, 30 May 2012 12:17:30 +0000 (22:17 +1000)]
Close #14947: add missing cross-reference to Language Definition from the new dynamic type creation functions. Also cleaned up the general wording of the docs
R David Murray [Tue, 29 May 2012 13:14:44 +0000 (09:14 -0400)]
#10839: raise an error on add of duplicate unique headers in new email policies
This feature was supposed to be part of the initial email6 checkin, but it got
lost in my big refactoring.
In this patch I'm not providing an easy way to turn off the errors, but they
only happen when a header is added programmatically, and it is almost never
the right thing to do to allow the duplicate to be added. An application that
needs to add duplicates of unique headers can create a policy subclass to
allow it.
Victor Stinner [Tue, 29 May 2012 10:57:52 +0000 (12:57 +0200)]
Issue #14744: Use the new _PyUnicodeWriter internal API to speed up str%args and str.format(args)
* Formatting string, int, float and complex use the _PyUnicodeWriter API. It
avoids a temporary buffer in most cases.
* Add _PyUnicodeWriter_WriteStr() to restore the PyAccu optimization: just
keep a reference to the string if the output is only composed of one string
* Disable overallocation when formatting the last argument of str%args and
str.format(args)
* Overallocation allocates at least 100 characters: add min_length attribute
to the _PyUnicodeWriter structure
* Add new private functions: _PyUnicode_FastCopyCharacters(),
_PyUnicode_FastFill() and _PyUnicode_FromASCII()