Chris Angelico at 2015/12/26 UTC+8 5:50:07PM wrote:
> 11: Another normal assignment, because otherwise the rest of the work
> is pointless. :)
Thanks for this detailed example. As I had learned so far, Python really take
"name" seriously, and every meaningful result you got have to assign to a
Last night I noticed that Python does not resolve name in "def" during import,
as C does in the compile/link stage, it was deferred until it was referenced
(i.e. codes was executed). That's OK for Anyway codes has to be debugged sooner
or later. I just have to get used to this style.
But check
As a tranditional language programmer like me, the result is really weird.
Here is the test codes in file test1.py:
def outerf():
counter = 55
def innerf():
print(counter)
#counter += 1
return innerf
myf = outerf()
the result is:
>>> import
Michael Torrie at 2015/12/23 UTC+8 12:22:23PM wrote：
> In the American way of thinking, the country *is* the people. So it was
> neither a lie nor a bad thing that Kennedy proclaimed. Maybe this is
> not true for other countries, but I think most Americans would feel it
> is true for their
Mark Lawrence at 2015/12/21 UTC+8 8:50:00PM wrote：
> My fellow Pythonistas, ask not what our language can do for you, ask
> what you can do for our language.
When I saw this sentence, I can't resist to think of the famous lie created by
president John kennedy: "Ask not what your country can do
I am trying to use the libusb-win32 v1.2.6.0 with Win7. I wrote a test
program(showing below) but stuck with a strange problem. Here is the result:
D:\Work\Python34>python
Python 3.4.3 (v3.4.3:9b73f1c3e601, Feb 24 2015, 22:43:06) [MSC v.1600 32 bit (In
tel)] on win32
eryk sun at 2015/12/18 UTC+8 6:26:02PM wrote：
> The function's calling convention is x86 cdecl (CDLL, caller stack
> cleanup), but you're using the x86 stdcall convention (WinDLL, callee
> stack cleanup). For a 64-bit process they're actually the same, but
> you're using 32-bit Python, so you
I am new to python. I had a USB HID device which behavior is that the host send
a 64 bytes commands to it, after complete the execution of this commands it
send back a 64 bytes status to the host, so the host can check the status and
decide the next step.
When I run it under Win7 with
Peter Otten at 2015/12/1 UTC+8 7:01:55PM wrote：
> While the var_status.set() invoked from the second thread modifies some
> internal data the main thread could kick in and modify (parts of) that same
> data, thus bringing tkinter into an broken state. A simple example that
> demonstrates the
jf...@ms4.hinet.net at 2015/11/29 UTC+8 10:55:28AM wrote：
> > > .
> > > .
> > > #do the rest
> > > var_status.set('Download...')
> > > _thread.start_new_thread(td_download, ()) #must use threading
> > >
> > > def td_download():
> > > result = mydll.SayHello()
> >
Peter Otten at 2015/11/28 UTC+8 6:14:09PM wrote：
> No, the point of both recipes is that tkinter operations are only ever
> invoked from the main thread. The main thread has polling code that
> repeatedly looks if there are results from the helper thread. As far I
> understand the polling
Laura Creighton at 2015/11/28 UTC+8 6:52:25PM wrote：
> I never saw the reply that Peter is replying to.
> The threading module constructs a higher level interface on top of the
> low level thread module. Thus it is the preferred way to go for
> standard Python code -- and even Fredrik's recipe
Peter Otten at 2015/11/27 UTC+8 5:19:17 PM wrote：
Hi! Peter, thanks for your prompt reply.
> What does var_status.set() do? If it writes to stdout you may just need to
> flush().
var_status is a StringVar which binds to a lable's textvariable. I use this
label as the status bar to show
Peter Otten at 2015/11/27 UTC+8 8:20:54PM wrote：
> Quick-fix example:
> def download():
> var.set("Starting download...")
> root.update_idletasks()
> time.sleep(3)
> var.set("... done")
Thanks, Peter, The update_idletasks() works. In my trivial program it's easy to
apply for
I am new to Python. As an exercise of it, I try to port a program which was
written more than 10 years ago. This program use the Borland C++ Builder as its
GUI front end and a DLL does the real work(it will takes a few seconds to
complete). I saw a strange phenomenon in the following codes. The
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