Re: problems with tkinter updates
On 2012-01-24 02:52, Peter Otten wrote:
Have update() (renamed to read_more() in my code) do the reading:
import sys
import tkinter
import tkinter.scrolledtext
root = tkinter.Tk()
text_window = tkinter.Toplevel()
text = tkinter.scrolledtext.ScrolledText(text_window)
text.pack()
infile = open(sys.argv[1])
def read_more():
line = next(infile, None)
if line is not None:
text.insert(tkinter.END, line)
root.after(100, read_more)
else:
text.insert(tkinter.END, "\nThat's all folks", "looney")
text.tag_configure("looney", foreground="RED")
text.see(tkinter.END)
read_more()
root.mainloop()
Thank you, this was very useful!
--
Yves. http://www.SollerS.ca/
http://ipv6.SollerS.ca
http://blog.zioup.org/
--
http://mail.python.org/mailman/listinfo/python-list
Re: The devolution of English language and slothful c.l.p behaviors exposed!
On 1/25/2012 9:14 PM Steven D'Aprano said... In the same way that a native English speaker would never make the mistake of using "organ" to refer to an unnamed mechanical device, so she would never use "gadget" to refer to an unnamed body part. My wife introduced me to the term "picnic gadget" as the means by which males avoid restroom lines... Emile -- http://mail.python.org/mailman/listinfo/python-list
runtime error
Hi I just minstalled python 3.1 on my windons XP SP3 but on the start up I get the following error message: Fatal Python error: Py_Initialize: can't initialize sys standard streams ImportError: No module named encodings.utf_8 This application has requested the Runtime to terminate it in an unusual way. Please contact the application's support team for more information.# What should I do Many thanks Nikos -- http://mail.python.org/mailman/listinfo/python-list
Re: The devolution of English language and slothful c.l.p behaviors exposed!
On Fri, 27 Jan 2012 09:06:57 -0800, Emile van Sebille wrote: > On 1/25/2012 9:14 PM Steven D'Aprano said... >> In the >> same way that a native English speaker would never make the mistake of >> using "organ" to refer to an unnamed mechanical device, so she would >> never use "gadget" to refer to an unnamed body part. > > My wife introduced me to the term "picnic gadget" as the means by which > males avoid restroom lines... Well, that's hardly an *unnamed* organ, is it? -- Steven -- http://mail.python.org/mailman/listinfo/python-list
Re: Constraints -//- first release -//- Flexible abstract class based validation for attributes, functions and code blocks
On Jan 27, 6:38 am, Nathan Rice wrote: > > May I suggest a look at languages such as ATS and Epigram? They use > > types that constrain values specifically to prove things about your > > program. Haskell is a step, but as far as proving goes, it's less > > powerful than it could be. ATS allows you to, at compile-time, declare > > that isinstance(x, 0 <= Symbol() < len(L)) for some list L. So it > > might align well with your ideas. > > Thanks for the tip. > > >>> Probably deserves a better name than "constraintslib", that makes one > >>> think of constraint satisfaction. > > >> As you can probably tell from my other projects, I'm bad at coming up > >> with snappy names. > > > I'm bad at doing research on previous projects ;) > > I guess I'm not plugging my other projects enough... You should check > out elementwise. > > Thanks, > > Nathan I love elementwise and this one - thanks. If I can be so bold, I would call it 'contracts'. Or, if you want to be more imaginative and esoteric - 'judge'/'barrister'/'solicitor'. Thanks again, Jon. -- http://mail.python.org/mailman/listinfo/python-list
Re: Where to put data
On 1/25/2012 9:26 AM, bvdp wrote: I'm having a disagreement with a buddy on the packaging of a program we're doing in Python. It's got a number of modules and large number of library files. The library stuff is data, not code. How much data? Megabytes? Gigabytes? I have some modules which contain nothing but big constants, written by a program in Python format. John Nagle -- http://mail.python.org/mailman/listinfo/python-list
Patching CGIHTTPServer.py
Hi everyone,
I was fiddling around with CGIHTTPServer.py --- a very handy module
for quickly setting up a full HTTP server with CGI support --- when I
noticed that it doesn't support responses other than "200 OK". So, for
instance if your page wants to do a redirect (response 303), it just
isn't supported. I think this is a major drawback that can be easily
overcome and I'd very happily contribute that as an enhancement.
But... I'm new to Python and as a matter of fact web programming as a
whole isn't really my specialty. I was thinking that maybe someone
could spend half an hour looking at my solution and help raising it's
quality to the level I can submit it as a patch proposal.
Cheers,
-- Giovanni
--- /usr/lib/python2.7/CGIHTTPServer.py 2011-10-04 22:24:00.0 +0100
+++ CGIHTTPServer.py 2012-01-27 22:38:01.785587952 +
@@ -30,6 +30,7 @@
import SimpleHTTPServer
import select
import copy
+import re
class CGIHTTPRequestHandler(SimpleHTTPServer.SimpleHTTPRequestHandler):
@@ -218,8 +219,6 @@
'HTTP_USER_AGENT', 'HTTP_COOKIE', 'HTTP_REFERER'):
env.setdefault(k, "")
-self.send_response(200, "Script output follows")
-
decoded_query = query.replace('+', ' ')
if self.have_fork:
@@ -229,10 +228,23 @@
args.append(decoded_query)
nobody = nobody_uid()
self.wfile.flush() # Always flush before forking
+r, w = os.pipe()
pid = os.fork()
if pid != 0:
# Parent
+os.close(w)
pid, sts = os.waitpid(pid, 0)
+# read and translate status header
+r = os.fdopen(r)
+data = r.readline()
+status = re.match('Status: ([0-9]+) (.+)', data)
+if status:
+self.send_response(int(status.group(1)), status.group(2))
+else:
+self.send_response(200, 'OK')
+self.wfile.write(data)
+# pipe rest of contents
+self.wfile.write(r.read())
# throw away additional data [see bug #427345]
while select.select([self.rfile], [], [], 0)[0]:
if not self.rfile.read(1):
@@ -242,12 +254,13 @@
return
# Child
try:
+os.close(r)
try:
os.setuid(nobody)
except os.error:
pass
os.dup2(self.rfile.fileno(), 0)
-os.dup2(self.wfile.fileno(), 1)
+os.dup2(w, 1)
os.execve(scriptfile, args, env)
except:
self.server.handle_error(self.request, self.client_address)
@@ -285,8 +298,16 @@
while select.select([self.rfile._sock], [], [], 0)[0]:
if not self.rfile._sock.recv(1):
break
-stdout, stderr = p.communicate(data)
-self.wfile.write(stdout)
+r, stderr = p.communicate(data)
+data = r.split('\n', 1)
+status = re.match('Status: ([0-9]+) (.+)', data[0])
+if status:
+self.send_response(int(status.group(1)), status.group(2))
+else:
+self.send_response(200, 'OK')
+self.wfile.write(data[0]+'\n')
+# pipe rest of contents
+self.wfile.write(data[1])
if stderr:
self.log_error('%s', stderr)
p.stderr.close()
--
http://mail.python.org/mailman/listinfo/python-list
Re: calling a simple PyQt application more than once
Jabba Laci wrote:
> Hi,
>
> I have a simple PyQt application that creates a webkit instance to
> scrape AJAX web pages. It works well but I can't call it twice. I
> think the application is not closed correctly, that's why the 2nd call
> fails. Here is the code below. I also put it on pastebin:
> http://pastebin.com/gkgSSJHY .
>
> The question is: how to call this code several times within a script.
You want to create/execute/quit a QApplication just once, not multiple
times.
I don't know either WebKit or AJAX. In fact, I've never done any
networking with PyQt. But a little playing with the QtNetwork module
yielded this, using the QNetworkAccessManager and QNetworkRequest classes:
from PyQt4.QtCore import QUrl
from PyQt4.QtGui import QApplication, QPushButton
from PyQt4.QtNetwork import QNetworkAccessManager, QNetworkRequest
def process_page(reply_obj):
resp = reply_obj.readAll()
reply_obj.close()
print str(resp).strip()
def do_click():
req = QNetworkRequest(QUrl(MYURL))
mgr.finished.connect(process_page)
mgr.get(req)
MYURL = 'http://simile.mit.edu/crowbar/test.html'
if __name__ == "__main__":
# we need only one application object and one net-access mgr
app = QApplication([])
mgr = QNetworkAccessManager()
# the entire GUI is one button
btn = QPushButton("Press me")
btn.clicked.connect(do_click)
btn.show()
# start the event loop
app.exec_()
You can click the "Press me" button as many times as you wish; it
retrieves and displays/prints the same HTML file on each click.
HTH,
John
--
http://mail.python.org/mailman/listinfo/python-list
Re: Where to put data
On Thursday, January 26, 2012 8:20:24 PM UTC-7, Michael Torrie wrote: > > > I'm getting mangled by the debian maintainers and friends who seem to > > believe that python modules need to go into /usr/lib/python... > > I guess the maintainers aren't distinguishing between python apps and > their submodules and general python modules (libraries), which is pretty > silly. Even as a mere user I would not like my /usr/lib/python > directory cluttered with python code that is not useful generally but is > only for specific apps. Namespace collisions are inevitable with other > python apps (not libraries) if folks insist on doing this. Well, I might be wrong in my assumptions. Never got invited to join the inner circle so I'm looking at all this from the outside. > > Calibre appears to be in the Ubuntu standard repositories. I just Yeah, I looked at that as well after your earlier post. > checked and in calibre proper (not talking about dependent libraries and > things that would be useful outside of calibre), there are no python > files installed in /usr/lib/python/. Calibre modules that belong to But, when you dl from the calibre site the default location is /opt. > calibre proper are in /usr/lib/calibre. Recipes (really just python > scripts) are in /usr/share/calibre. Maybe Ubuntu is doing things > differently than Debian, but I'm hard pressed to see the logic in > forcing everything ever written in python, such as submodules, installed > to /usr/lib/python. Baffles the mind. I completely agree. Mind you, one consolation in putting things in, for example, /usr/lib/pythonX.Y are: - you can let setup find that that magic location - you don't need to worry about your app finding the lib (python modules). But, I've pretty much decided that the easy way (and dare I say the correct way?) is to let my packager decide where to install the modules. My program really doesn't care (nor do I). And, then I'll end up with my program's stuff something like: myprogram mymodules ... mylib ... program-bin And then have a link in the users path which is a link or a one line call to program-bin. With modules in a directory at the same level as program-bin I don't have to do any module searches, etc. Seems to be a simple and sort-of-elegant solution. I've tried this with one-line callers and links and it seems to work in all cases. Any gotchas? -- http://mail.python.org/mailman/listinfo/python-list
Re: Where to put data
On Friday, January 27, 2012 3:15:44 PM UTC-7, John Nagle wrote: > On 1/25/2012 9:26 AM, bvdp wrote: > > I'm having a disagreement with a buddy on the packaging of a program > > we're doing in Python. It's got a number of modules and large number > > of library files. The library stuff is data, not code. > > How much data? Megabytes? Gigabytes? > > I have some modules which contain nothing but big > constants, written by a program in Python format. > > John Nagle A couple of hundred files totaling about 2 meg. Not a lot. Gosh, I remember when this was several full floppies :) -- http://mail.python.org/mailman/listinfo/python-list
to express unicode string
>>> s='你好' >>> t=u'你好' >>> s '\xc4\xe3\xba\xc3' >>> t u'\u4f60\u597d' >>> t=us Traceback (most recent call last): File "", line 1, in NameError: name 'us' is not defined >>> how can i use us to express u'你好'?? can i add someting in us to express u'你好'?? -- http://mail.python.org/mailman/listinfo/python-list
Re: Re: How do I call super() in c extention ?
> Have you considered using Cython for this? No. I hadn't known Cython. Now, I'll try to use Cython. thanks. umedoblock (-28163年01月-9日 04:59), Stefan Behnel wrote: umedoblock, 27.01.2012 03:03: I'd like to call super() in c extension. I'd like to rewrite class Baa as c extension. Have you considered using Cython for this? It will allow you to do exactly that with only minor changes to your Python code (if any). And it's quite likely that the C code that it generates from your Python code will be more efficient than what you'd write manually. Certainly more readable and maintainable. Stefan -- http://mail.python.org/mailman/listinfo/python-list
what is the unicode?
as far as i know
>>> u'中国'.encode('utf-8')
'\xe4\xb8\xad\xe5\x9b\xbd'
so,'\xe4\xb8\xad\xe5\x9b\xbd' is the utf-8 of '中国'
>>> u'中国'.encode('gbk')
'\xd6\xd0\xb9\xfa'
so,'\xd6\xd0\xb9\xfa' is the utf-8 of '中国'
>>> u'中国'
u'\u4e2d\u56fd'
what is the meaning of u'\u4e2d\u56fd'?
u'\u4e2d\u56fd' = \x4e2d\x56fd ??
--
http://mail.python.org/mailman/listinfo/python-list
PyPI - how do you pronounce it?
Hopefully this will be a step up from Rick's threads in usefulness, but I'm aware it's not of particularly great value! How do you pronounce PyPI? Is it: * Pie-Pie? * Pie-Pip, but without the last p? (same as above but short i) * Pie-Pea-Eye? * Something else? I've been saying Pie-Pea-Eye myself, but am wondering what the most normal pronunciation is. And am fully prepared for the possibility that there is no one "most normal"! ChrisA -- http://mail.python.org/mailman/listinfo/python-list
