Commit Graph

12 Commits

Author SHA1 Message Date
Guido van Rossum cc20b76ad0 Add comments explaining thread unsafety of this code. 1998-05-29 17:51:59 +00:00
Guido van Rossum 358473c1a2 Andrew Kuchling writes:
First, the RNG in whrandom.py sucks if you let it seed itself from the time.
The problem is the line:
			t = int((t&0xffffff) | (t>>24))
Since it ORs the two parts together, the resulting value has mostly
ON bits.  Change | to ^, and you don't lose any randomness.
1998-02-16 14:52:42 +00:00
Guido van Rossum d247812521 Two improvements suggested by Tim Peters: speed up random() since we
know Python integers are at least 32 bits long; and avoid zeros in
initial seed value.
1997-07-10 15:14:50 +00:00
Guido van Rossum 6757748641 Properly parenthesize a long Boolean combination. Formerly, you could
pass invalid seed values.
1997-01-02 18:13:35 +00:00
Guido van Rossum 9cb018e693 Change the default seeding -- use 8 bits of sub-second precision and
fold in the higest 8 bits of the time as well.
1996-10-21 23:20:03 +00:00
Guido van Rossum 14a6e3d5e8 * Lib/whrandom.py: if seed is (0,0,0), initialize from current
time; default seed's arguments to (0,0,0)
1994-09-14 13:33:57 +00:00
Guido van Rossum 3bb5448767 New way of generating .pyc files, thanks to Sjoerd.
urllib.py: '+' is not always safe (even though the RFC says so :-( )
whrandom.py: throw away top bits of time to avoid overflow on Mac
(where times can be negative)
1994-08-29 10:52:58 +00:00
Guido van Rossum b6775db241 Merge alpha100 branch back to main trunk 1994-08-01 11:34:53 +00:00
Guido van Rossum 7bc817d5ba * Mass change: get rid of all init() methods, in favor of __init__()
constructors.  There is no backward compatibility.  Not everything has
  been tested.
* aiff.{py,doc}: deleted in favor of aifc.py (which contains its docs as
  comments)
1993-12-17 15:25:27 +00:00
Guido van Rossum fea2af1e9b * More changes due to stricter argument passing rules
* Fixed calendar.py, mimetools.py, whrandom.py to cope with time.time()
  returning a floating point number.  (And fix old bug in calendar)
* Add recursion level to mainloop.mainloop(), to make it reentrant.
1993-01-04 09:16:51 +00:00
Guido van Rossum 2db91358de Misc changes and new modules. whrandom is "objectified". SOCKET.py
is moved to the sgi subdirectory.
1992-10-18 17:09:59 +00:00
Guido van Rossum c636014c43 Initial revision 1990-10-13 19:23:40 +00:00