input. When an EOF is read, break out of the loop instead of (by
default) writing an empty line (which doesn't do much good). Don't
close self when falling through the loop.
* The invoke methods of the three Tkinter widgets Button,
Checkbutton and Radiobutton should return the value returned by
the callback, (like the Menu widget does):
def invoke(self):
return self.tk.call(self._w, 'invoke')
* The select_from method of the Canvas widget should use 'from', not
'set':
def select_from(self, tagOrId, index):
self.tk.call(self._w, 'select', 'from', tagOrId, index)
Currently, if you use select_from, you get the error message:
'TclError: bad select option "set": must be adjust, clear, from, item, or to'
* The 'entrycget' and 'type' methods of the Tk menu widget are
missing from Tkinter.
* There is a bug in grid_columnconfigure and grid_rowconfigure. For
example, this should return the current value of the 'minsize'
option for column 0:
f.grid_columnconfigure(0, 'minsize')
Instead it returns the same as:
f.grid_columnconfigure(0)
I suggest that the hint given in the comment in the
Tkinter.Misc.configure method should be followed - "ought to
generalize this so tag_config etc. can use it". Repeating the
same configure code several times in Tkinter is inviting errors.
[I did not follow this advice --G]
* The grid_slaves method should handle options. Currently, to pass
options to the grid_slaves method, you have to do something like:
grid_slaves('-row', 1)
retrieving files from the same host and directory, you had to close
the previous instance before opening a new one; and retrieving a
non-existent file would return an empty file. (The latter fix relies
on maybe an undocumented property of NLST -- NLST of a file returns
just that file, while NLST of a non-existent file returns nothing. A
side effect, unfortunately, seems to be that now ftp-retrieving an
*empty* directory may fail. Ah well.)
The attached patch adds the following behavior to the handling
of REDUCE codes:
- A user-defined type may have a __reduce__ method that returns
a string rather than a tuple, in which case the object is
saved as a global object with a name given by the string returned
by reduce.
This was a feature added to cPickle a long time ago.
- User-defined types can now support unpickling without
executing a constructor.
The second value returned from '__reduce__' can now be None,
rather than an argument tuple. On unpickling, if the
second value returned from '__reduce__' during pickling was
None, then rather than calling the first value returned from
'__reduce__', directly, the '__basicnew__' method of the
first value returned from '__reduce__' is called without
arguments.
I also got rid of a few of Chris' extra ()s, which he used
to make python ifs look like C ifs.
__builtins__ for all calls to eval(). This still allows someone to
write string.atof("[1]*1000000") (which Jim Fulton worries about) but
effectively disables access to system modules and functions.
have been configured, string.atof() should not fail when "import re"
fails (usually because pcre is not there).
This opens up a tiny security hole: *if* an attacker can make "import
re" fail, they can also make string.atof(arbitrary_string) evaluate
the arbitrary string. Nothing to keep me awake at night...
mode. The pickler always uses base 10 so the default base should be
fine. (The base gets us in trouble when there's no strop module, as
the atoi() in string.py only supports base 10. This is for JPython.)
not define __getinitargs__, bypass the __init__ constructor
completely. This uses the trick of instantiating an empty dummy class
and then changing inst.__class__ to the real class. This is done in
two places: once for the INST and once for the OBJ format code.
Also replaced the much outdated long doc string with a short summary
of the module; the information of that doc string is already
incorporated in the library reference manual.
Guido van Rossum
Fred Drake