如何将null（0）终止的字符串转换为Python字符串？ [英] How do I converted a null (0) terminated string to a Python string?
问题描述
大家好，
我收到（通过UDP）一个空终止的字符串，需要将它转换成一个Python字符串。谁能告诉我这是怎么做到的？如果它有帮助，
我知道字符串中的字符数。
谢谢，
M. McDonnell
Hi All,
I''ve received (via UDP) a null terminated string and need to convert it
into a Python string. Can anyone tell me how this is done? If it helps,
I know the number of characters in the string.
Thanks,
M. McDonnell
推荐答案
Michael写道：
Michael wrote:
大家好，
我收到（通过UDP）一个空终止的字符串，需要将它转换成一个Python字符串。谁能告诉我这是怎么做到的？如果它有帮助，
我知道字符串中的字符数。
谢谢，
M. McDonnell
您是否在Python或C中收到此字符串？如果是前者，那么
只丢掉你收到的字符串的最后一个字符，并且你已经完成了
！
s = s [： - 1]
问候
Steve
-
Steve Holden +44 150 684 7255 +1 800 494 3119
Holden Web LLC / Ltd http://www.holdenweb.com
Skype：holdenweb http://holdenweb.blogspot.com
最近的Ramblings http://del.icio.us/steve.holden
Have you received this string in Python or in C? If the former, then
just throw away the last character of the string you''ve received and
you''re done!
s = s[:-1]
regards
Steve
--
Steve Holden +44 150 684 7255 +1 800 494 3119
Holden Web LLC/Ltd http://www.holdenweb.com
Skype: holdenweb http://holdenweb.blogspot.com
Recent Ramblings http://del.icio.us/steve.holden
Michael写道：
Michael wrote:
大家好，
我收到（通过UDP）一个空终止的字符串，需要转换它
成Python字符串。谁能告诉我这是怎么做到的？如果它有帮助，
我知道字符串中的字符数。
Hi All,
I''ve received (via UDP) a null terminated string and need to convert it
into a Python string. Can anyone tell me how this is done? If it helps,
I know the number of characters in the string.
我认为你的意思是NUL，而不是null。
如果它不是Python字符串，你收到了什么？
你可能需要/想要这个：
如果strg [-1] ==" \0"：
strg = strg [： - 1]
或者：
strg = strg.rstrip（" \0"）＃需要Python 2.2.2或更高版本
你可能在谈论一个固定长度字符串
包含useful_stuff +" \0" +填充 - 在这种情况下你需要
strg = strg.split（" \0"）[0]＃抓住（但不包括）第一个
NUL（如果有的话）
如果你不确定你有什么，请打印repr（the_input_string）
HTH，
John
I think you mean NUL, not null.
What have you received it into, if it''s not a Python string?
You probably need/want this:
if strg[-1] == "\0":
strg = strg[:-1]
alternatively:
strg = strg.rstrip("\0") # requires Python 2.2.2 or later
It''s possible you may be talking about a fixed length string which
contains useful_stuff + "\0" + padding -- in that case you need
strg = strg.split("\0")[0] # grab upto (but not including) the first
NUL (if any)
If you''re not sure what you''ve got, print repr(the_input_string)
HTH,
John
非常感谢您的回复。回答一些
的问题...是的，我在Python中接收一个C语言0终止
字符串以UDP数据包发送到我的Python程序（这是多少
我知道数量）。鉴于此
澄清，您的回复是否仍然正确？
非常感谢，
MDM
John Machin写道：
Thank you very much for your responses. To answer some of the
questions... Yes, I am in Python receiving a C language 0 terminated
string that was sent to my Python program in a UDP packet (which is how
I know the count). Are your responses still correct given this
clarification?
Thanks much,
MDM
John Machin wrote:
Michael写道：
Michael wrote:
大家好，
我收到（通过UDP）一个空终止的字符串，需要将它转换成一个Python字符串。谁能告诉我这是怎么做到的？如果它有帮助，
我知道字符串中的字符数。
Hi All,
I''ve received (via UDP) a null terminated string and need to convert it
into a Python string. Can anyone tell me how this is done? If it helps,
I know the number of characters in the string.
我认为你的意思是NUL，而不是null。
你收到了什么，如果它不是一个Python字符串？
您可能需要/想要这个：
如果strg [-1] ==" \0"：
strg = strg [： - 1]
或者：
strg = strg.rstrip（" \0"）＃需要Python 2.2.2或更高版本
您可能正在谈论一个固定长度的字符串
包含useful_stuff +" \0" +填充 - 在这种情况下你需要
strg = strg.split（" \0"）[0]＃抓住（但不包括）第一个
NUL（如果有的话）
如果你不确定你有什么，请打印repr（the_input_string）
HTH，
John
I think you mean NUL, not null.
What have you received it into, if it''s not a Python string?
You probably need/want this:
if strg[-1] == "\0":
strg = strg[:-1]
alternatively:
strg = strg.rstrip("\0") # requires Python 2.2.2 or later
It''s possible you may be talking about a fixed length string which
contains useful_stuff + "\0" + padding -- in that case you need
strg = strg.split("\0")[0] # grab upto (but not including) the first
NUL (if any)
If you''re not sure what you''ve got, print repr(the_input_string)
HTH,
John
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