Results

• Highlights: Python 2.5

  ...iterator contains any or all True values, respectively. min and max gained a key keyword parameter, analogous to sort. New or upgraded modules and packages In keeping with the theme of adding tried and true packages to the standard library, in 2.5 we've added ctypes, ElementTree, hashlib, sqlite3 and wsgiref to the standard library that ships with Python. Google's summer of code resulted in a new cProfile profiling module. This is a much more efficient version of the venerable profile.py modul...

• Debugging Reference Count Problems

  ...iterate three or four times in disbelief). This is a typical example of Heisenberg's law applied to programs: you can't observe something without influencing it. I'm using: printf(" Env as rule called:\n\t%s\n", PyString_AsString(PyObject_Repr(env))); This creates a new string object that is never collected: the new string object returned by PyObject_Repr(). Since this is presumably a big string and you are allocating a lot of them (one each time you get t...

• Release – Python 2.2.1

  Version: None

  Released: April 10, 2002

  Important: This release is vulnerable to the problem described in security advisory PSF-2006-001 "Buffer overrun in repr() of unicode strings in wide unicode builds (UCS-4)". This fix is included in Python 2.4.4 and Python 2.5. If you need to remain with Python 2.2, there's a patch available from the …

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• Python 2.2.1

  ...Iterators and simple generators by David Mertz on IBM developerWorks. Documentation The documentation has been updated too: Browse HTML on-line Download using HTTP. Files, MD5 checksums and sizes 1d1d8c1922177fd9e603552f0507d33b Python-2.2.1.exe (7142643 bytes) e7012d611602b62e36073c2fd02396a3 Python-2.2.1.tgz (6535104 bytes) 9ae1d572cbd2bfd4e0c4b92ac11387c6 UNWISE.EXE (162304 bytes)

• Release – Python 2.2.3

  Version: None

  Released: May 30, 2003

  We are pleased to announce the release of Python 2.2.3 (final), on May 30, 2003. This is a bug-fix release for Python 2.2 and supersedes the previous bugfix release, Python 2.2.2. Note: there's a security fix for SimpleXMLRPCServer.py. Download the release Windows users should download the Windows installer, …

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• Python 2.2.3

  ...Iterators and simple generators by David Mertz on IBM developerWorks. Documentation The documentation has been updated too: Browse HTML on-line Download using HTTP Files, MD5 checksums and sizes d76e774a4169794ae0d7a8598478e69e Python-2.2.3.exe (7334106 bytes) 169f89f318e252dac0c54dd1b165d229 Python-2.2.3.tgz (6709556 bytes)

• Python Success Stories

  ...iterating, concatenating, intersecting, etc.). Last but not least, if performance ever becomes an issue, it is easy to write extensions using the Python/C API. Understand that we did evaluate other solutions, which included Ruby and Java. But our impression of Ruby was that it was too immature at the time and Java can often be unpleasant to work with. Project Results It is imperative that we provide 24/7/365 availability to our clients, as WordStream is an online Software as a Service solution...

• Release – Python 3.14.0a5

  Version: None

  Released: Feb. 11, 2025

  Here comes the antepenultimate alpha. This is an early developer preview of Python 3.14 Major new features of the 3.14 series, compared to 3.13 Python 3.14 is still in development. This release, 3.14.0a5, is the fifth of seven planned alpha releases. Alpha releases are intended to make it easier to …

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• Notes

  ...iterators now ensure that, once StopIteration has been raised, all future calls to next() on the same iterator will also raise StopIteration. There used to be various counterexamples to this behavior, which could caused confusion or subtle program breakage, without any benefits. (Note that this is still an iterator's responsibility; the iterator framework does not enforce this.) Ctrl+C handling on Windows has been made more consistent with other platforms. KeyboardInterrupt can now reliably ...

• Python Success Stories

  ...iterion. Dynamic deformation of the chaperon protein GroEL, obtained with the MMTK-based interactive DomainFinder (Zoom in) Characteristic features of biomolecular simulations that had to be taken into account are the long execution times of some simulation techniques (several weeks are not uncommon) and the complexity of the data structures describing biomolecules. Choice of languages The choice of Python plus C was made after an evaluation of various languages. I was rapidly convinced tha...

• What's New In Python 3.0

  ...iterators, behaving like their itertools counterparts. This also affect map()'s behavior on sequences of unequal length -- it now stops after the shortest one is exhausted. Additions: set literals, set comprehensions, ellipsis literal. Added class decorators per PEP 3129. Extension Modules Removed the imageop module. Obsolete long with its unit tests becoming useless from the removal of rgbimg and imgfile. Removed these attributes from the operator module: div, idiv, __div__, __idiv__, ...

• Unifying types and classes in Python 2.2

  ...iterated over will do, and the values returned by the iteration are used as the slot names. In particular, a dictionary can be used. You can also use a single string, to declare a single slot. However, in the future, an additional meaning may be assigned to using a dictionary, for example, the dictionary values may be used to restrict the type of an instance variable or provide a doc string; the effect of using something that's not a list renders the meaning of your program undefined. ...

• Unifying types and classes in Python 2.2

  ...iterated over will do, and the values returned by the iteration are used as the slot names. In particular, a dictionary can be used. You can also use a single string, to declare a single slot. However, in the future, an additional meaning may be assigned to using a dictionary, for example, the dictionary values may be used to restrict the type of an instance variable or provide a doc string; the effect of using something that's not a list renders the meaning of your program undefined. ...

• Unifying types and classes in Python 2.2

  ...iterated over will do, and the values returned by the iteration are used as the slot names. In particular, a dictionary can be used. You can also use a single string, to declare a single slot. However, in the future, an additional meaning may be assigned to using a dictionary, for example, the dictionary values may be used to restrict the type of an instance variable or provide a doc string; the effect of using something that's not a list renders the meaning of your program undefined. ...

• Unifying types and classes in Python 2.2

  ...iterated over will do, and the values returned by the iteration are used as the slot names. In particular, a dictionary can be used. You can also use a single string, to declare a single slot. However, in the future, an additional meaning may be assigned to using a dictionary, for example, the dictionary values may be used to restrict the type of an instance variable or provide a doc string; the effect of using something that's not a list renders the meaning of your program undefined. ...

• Python Success Stories

  ...iterators and other support objects, break code into particular files, or write other supporting code required in languages like C++ or Java. As a result, Python is almost executable pseudo-code. Python speeds the development cycle. Since Python code is compiled to byte code on the fly by the interpreter, the development cycle is just "edit-and-execute" instead of "edit-compile-execute". In practice, this can save substantial amounts of time. Python facilitates debugging. P...

• What's new in Python 1.5 and beyond

  ...iterals is introduced, "raw strings": e.g. r"n" is equal to "\n". All standard exceptions and most exceptions defined in standard extension modules are now classes. Use python -X to revert back to string exceptions. See Standard Exception Classes for more info. Comparisons can now raise exceptions (previously, exceptions occurring during comparisons were swept under the rug). New dictionary methods: .clear(), .copy(), .update(), .get(). The first two are obvious;...

• Notes

  ...iteration. This used to fail occasionally when a dictionary resize operation could be triggered that would rehash all the keys. All other modifications to the dictionary are still off-limits during a PyDict_Next() iteration! New extended APIs related to passing compiler variables around. New abstract APIs PyObject_IsInstance(), PyObject_IsSubclass() implement isinstance() and issubclass(). Py_BuildValue() now has a "D" conversion to create a Python complex number from a Py_complex C v...

• Incompatibilities between Python 2.1[.x] and 2.2[.x]

  ...iterals with an incomplete exponent, such as 1e and 3.1e-. Such literals now raise SyntaxError. <p><li>Nested scopes are standard in 2.2 (they were enabled per module through "from __future__ import nested_scopes" in 2.1[.1]). This may change the meaning of code like the following: <pre> def f(<font color="red">str</font>): def g(x): return <font color="red">str</font>(x) return g System Message: WARNING/2 (<strin...

• Python Patterns - An Optimization Anecdote

  ...iter) concatenates a list of strings, placing a delimiter of choice between each two strings. Nothing stops us from concatenating a list of characters (which are just strings of length one in Python), using the empty string as delimiter. Lo and behold: import string def f6(list): return string.joinfields(map(chr, list), "") This function ran four to five times as fast as our fastest contender, f3(). Moreover, it doesn't have the quadratic behavior of the ot...

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