* John Machin:
On Oct 29, 11:06 am, "Alf P. Steinbach" <al...@start.no> wrote:
(3) Tkinter not bundled, misleading & incomplete documentation.
With the file associations in place (the installer managed to do that) running
console programs works fine.
However, running Tkinter based programs does *not* work:
<code filename="ellipse.pyw">
import Tkinter
What documentation are you reading? As you are running Python 3.1, you
might like to consider reading 3.1 documentation. Many things have
been changed from 2.X, including renaming unconventionally named
modules and packages. In particular see
http://docs.python.org/3.1/library/tkinter.html
... in general, see the whatsnew docs that I pointed you at.
Thanks. I wasn't expecting that the names used to access some library had
changed just because the core language had been changed, and I didn't notice
this little change of letter case -- but Ethan Furman set me straight on that
earlier, as I reported else-thread. I'm new to the language.
If you are trying to run 2.X code under 3.1, don't expect it to work
straight away. Find "2to3" in the docs.
Thanks again!
I don't see how "2to3" can fix up "/" operators without having static type
information. In the case of integer args "/" should be replaced with "//" (as I
understand it), while for floats it should be left alone as-is. Hm.
It seems to me that Pyrex has demonstrated that declarations *can* be combined
sort of naturally with the rest of the language. What I miss most is the kind of
force-use-of-declarations directive like Perl "use strict" or VBScript "option
explicit". Of course that would require some way to declare variables, at least
their names... But perhaps this is already in 3.x? I'll probably find out.
[snip]
Checking I find that while there is a Tkinter folder there is no file
[Tkinter.py] in this installation, i.e. the Tkinter module is not bundled with
this distribution.
but the tkinter module is bundled
That's bad news for any novice wanting to start learning the language: a main
"battery" is missing! The documentation gives the impression that Tkinter can
Which documentation?
I see that the docs installed with 3.1.1 uses all lowercase in the code.
But the tutorials etc. on the net, referenced from the 3.1.1 documentation, have
not been updated to mention that they're not version-inpendent any longer.
E.g. <url: http://infohost.nmt.edu/tcc/help/pubs/tkinter/> (which says it is a
reference), and others referenced from the 3.1.1 documentation (I think the
3.1.1 documentation should clearly state that the referenced get-the-details
external documentation is for an earlier version of Python).
just be used, and it could just be used with ActivePython. Here the novice has
ActivePython 2.X or 3.X?
2.6, I couldn't find any later ActivePython version.
Of course it works just fine in 3.x when one writes lowercase "tkinter".
to figure out not only that it isn't there, but also how to get it!
Checking <url:http://pypi.python.org/pypi/>, the package index, nope, no
Tkinter there.
PyPI is for third-party modules and packages.
Does that mean that Tkinter is *not* third-party, but now part of the language
like part of its standard library?
Typing "tkinter" in the Firefox address bar leads to
<url:http://wiki.python.org/moin/TkInter>, and it has a recipe for checking for
Tkinter support/installation:
<checking results>
Python 3.1.1 (r311:74483, Aug 17 2009, 17:02:12) [MSC v.1500 32 bit (Intel)] on
win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import _tkinter
>>> import Tkinter
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
ImportError: No module named Tkinter
>>>
</checking results>
The recipe now calls for adding path to directory with [Tkinter.py], but as
mentioned no such file in this installation...
Cheers,
- Alf
PS: This was not unexpected. It was exactly why I earlier didn't even look at
CPython (umpteen bad experiences with *nix ports) but used ActivePython. I'm
hopeful that I will find where Tkinter resides on the net, but hey, it should at
least be documented, up front I mean (it's possibly mentioned somewhere, yes?).
Yes. You'll find that tkinter resides also on your hard disk (unless
you chose not to install it).
Python 3.1.1 (r311:74483, Aug 17 2009, 17:02:12) [MSC v.1500 32 bit
(Intel)] on
win32
Type "help", "copyright", "credits" or "license" for more information.
import tkinter
tkinter.__file__
'C:\\python31\\lib\\tkinter\\__init__.py'
Hey, that's very useful! :-)
Didn't you do a search of your hard disk for "Tkinter"?
Yes, it only found a folder and some DLLs, I think it was.
But given the filename you showed above I now found out about "packages" in
Python.
I guess it's the stumble-upon principle at work. <g>
Cheers,
- Alf
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