[Tutor] why are these two uses different?
Stanfield, Vicki {D167~Indianapolis}
vicki.stanfield at ROCHE.COM
Mon Mar 1 11:08:10 EST 2004
I had tried '1D'. Now I have tried to input [1D], ['1D'] but both
generate the
ValueError: list.index(x): x not in list
when I hit the
'fcommand=self.Dict.keys()[self.Dict.values().index(hexval)]' line. It
doesn't seem to matter how I enter the data into the wxTextEntryDialog,
it doesn't match. Given the following dictionary excerpt:
self.Dict=('\x78':'78','\x65':'65','\x60':'60',<SNIP>'\x1D':'1D')
What needs to be entered into the wxTextEntryDialog to make it match
this dictionary?
--vicki
-----Original Message-----
From: Magnus Lycka [mailto:magnus at thinkware.se]
Sent: Monday, March 01, 2004 10:55 AM
To: Stanfield, Vicki {D167~Indianapolis}; tutor at python.org
Subject: Re: [Tutor] why are these two uses different?
> Each command triggers a whole sequence of serial writes and reads.
> This works fine. Now I want to create a section which allows me to do
> them individually.
I guess here is where the problem lies. I'm guessing that
you have a loop somewhere in your code, where you loop
over something like ['1d', 'ff', 'c2'] in the working case.
Now, you loop over '1d' instead, and that's just the same
as looping over ['1', 'd']. Make sure to feed your loop with
a list or tuple instead, and I think it will work. ['1d'] or
('1d',) should work, but notice that ('1d') is *not* a tuple,
just a string in parenthesis.
E.g.
>>> x = '1d'
>>> for i in x: print i
1
d
>>> for i in (x): print i
1
d
>>> for i in (x,): print i
1d
>>> for i in [x]: print i
1d
--
Magnus Lycka, Thinkware AB
Alvans vag 99, SE-907 50 UMEA, SWEDEN
phone: int+46 70 582 80 65, fax: int+46 70 612 80 65
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