convert the ip packet to and from RS-232 packet

[Li Han]

Hi, I need to use radio to connect two local ip network, each local
network has a server computer which connects to a radio with RS-232
interface.  I need to write a program to convert the local ip packet
into RS-232 packet, so the radio can send packetes to the remote
radio. I don't want to reinvent the wheel, is there anyone could give
me some suggestions?
Thank you!
Han
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The rule of literal string

[Li Han]

Hi! I just began to read the tutorial of python3.0 and I just can't
figure out the rule of literal string. There is a example in the
tuotrial:
>>> '"Isn\'t," she said.'
'"Isn\'t," she said.'
It is not what I want, I just want '"Isn't," she said.' be printed,
why the backslash failed?
These don't work at all:
>>> '''"Isn't," she said.'''
'"Isn\'t," she said.'
>>> r"Isn't," she said.
SyntaxError: invalid syntax (, line 1)
>>> r'"Isn't," she said.'
SyntaxError: invalid syntax (, line 1)
I have tried to solve it until my brain damaged and now I need to
sleep.
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Re: The rule of literal string

[Li Han]

Thank you, Chris! You have made me learn more about Python.
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Re: The rule of literal string

[Li Han]

But what repr() do remain a black hole!
Han

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Re: The rule of literal string

[Li Han]

On 12月18日, 上午7时12分, Scott David Daniels  wrote:
Scott wrote:
> Try:  print repr(repr("'"))
> that might enlighten you.

I found that print( repr( repr( arbitarystring ) ) ) == repr
( arbitarystring )
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Re: The rule of literal string

[Li Han]

Chris worte:
[snip]
> And repr("''") ==> "\"''\""
> Which when print()-ed is: "''"
> And eval("''") is the same as entering two apostrophes ('') at the
> REPL, both of which give an empty string object.

On my machine:
>>> repr("''")
'"\'\'"'
Han
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image recogniton?

[Li Han]

Hi! I know little about the computer image processing, and now I have
a fancy problem which is how to read the time from the picture of a
clock by programming ?  Is there anyone who can give me some
suggestions?
Thank!
 Li Han
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Re: image recogniton?

[Li Han]

On 1月7日, 上午4时14分, J Kenneth King  wrote:
> I'm curious as to what application the solution to this problem is
> practical for all of its difficulty?
Sorry, I oversimplified the question because of my poor english. It is
an analog compass whose value we need to read  into the computer every
second. We use a video camera keep shooting it, and the compass and
camera are  fixed.
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Li Han

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