diff options
Diffstat (limited to 'Misc/NEWS')
| -rw-r--r-- | Misc/NEWS | 22 |
1 files changed, 17 insertions, 5 deletions
@@ -25,11 +25,23 @@ Core language, builtins, and interpreter - Even if you don't use file.xreadlines(), you may expect a speedup on line-by-line input. The file.readline() method has been optimized - quite a bit in platform-specific ways, both on Windows (using an - incredibly complex, but nevertheless thread-safe), and on systems - (like Linux) that support flockfile(), getc_unlocked(), and - funlockfile(). In addition, the fileinput module, while still slow, - has been sped up too, by using file.readlines(sizehint). + quite a bit in platform-specific ways: on systems (like Linux) that + support flockfile(), getc_unlocked(), and funlockfile(), those are + used by default. On systems (like Windows) without getc_unlocked(), + a complicated (but still thread-safe) method using fgets() is used by + default. + + You can force use of the fgets() method by #define'ing + USE_FGETS_IN_GETLINE at build time (it may be faster than + getc_unlocked()). + + You can force fgets() not to be used by #define'ing + DONT_USE_FGETS_IN_GETLINE (this is the first thing to try if std test + test_bufio.py fails -- and let us know if it does!). + +- In addition, the fileinput module, while still slower than the other + methods on most platforms, has been sped up too, by using + file.readlines(sizehint). - Support for run-time warnings has been added, including a new command line option (-W) to specify the disposition of warnings. |