Python正則表達式錯誤：錯誤的字符

作爲python的新手，我無法從這些答案中得到怎麼回事（a，b,c）我可以找到。我試圖做的是分析一些日誌是這樣的：Python正則表達式錯誤：錯誤的字符

#this is what I want parse 
#[time-5.40052;node-1;line-638]NOTE:BundleTrace:good! one bundle recept, it's one hop! bp_header=,destination ip=10.0.0.3,source ip=10.0.0.1,source seqno=139,payload size=345,offset size=345,src time stamp=5,hop time stamp=5,bundle type=BundlePacket 
    r2 = re.compile(r'[time-(\d+\.*\d*);node-(\d+\.*\d*);line-(\d+\.*\d*)]NOTE:BundleTrace:good! one bundle recep' 
    r't, it\'s one hop! bp_header=,destination ip=10.0.0.(\d+\.*\d*),source ip=10.0.0.(\d+\.*\d*),source seqn' 
    r'o=(\d+\.*\d*),payload size=(\d+\.*\d*),offset size=(\d+\.*\d*),src time st' 
    r'amp=(\d+\.*\d*),hop time stamp=(\d+\.*\d*),bundle type=([a-zA-Z]+)', re.VERBOSE) 
    hop = r2.match(line)

但我得到了一些錯誤是這樣的：

error          Traceback (most recent call last) 
<ipython-input-9-f8308b7bbe0f> in <module>() 
    51  r't, it\'s one hop! bp_header=,destination ip=10.0.0.(\d+\.*\d*),source ip=10.0.0.(\d+\.*\d*),source seqn' 
    52  r'o=(\d+\.*\d*),payload size=(\d+\.*\d*),offset size=(\d+\.*\d*),src time st' 
---> 53  r'amp=(\d+\.*\d*),hop time stamp=(\d+\.*\d*),bundle type=([a-zA-Z]+)', re.VERBOSE) 
    54  hop = r2.match(line) 
    55 

/home/dtn-/miniconda3/lib/python3.6/re.py in compile(pattern, flags) 
    231 def compile(pattern, flags=0): 
    232  "Compile a regular expression pattern, returning a pattern object." 
--> 233  return _compile(pattern, flags) 
    234 
    235 def purge(): 

/home/dtn-/miniconda3/lib/python3.6/re.py in _compile(pattern, flags) 
    299  if not sre_compile.isstring(pattern): 
    300   raise TypeError("first argument must be string or compiled pattern") 
--> 301  p = sre_compile.compile(pattern, flags) 
    302  if not (flags & DEBUG): 
    303   if len(_cache) >= _MAXCACHE: 

/home/dtn-/miniconda3/lib/python3.6/sre_compile.py in compile(p, flags) 
    560  if isstring(p): 
    561   pattern = p 
--> 562   p = sre_parse.parse(p, flags) 
    563  else: 
    564   pattern = None 

/home/dtn-/miniconda3/lib/python3.6/sre_parse.py in parse(str, flags, pattern) 
    854 
    855  try: 
--> 856   p = _parse_sub(source, pattern, flags & SRE_FLAG_VERBOSE, False) 
    857  except Verbose: 
    858   # the VERBOSE flag was switched on inside the pattern. to be 

/home/dtn-/miniconda3/lib/python3.6/sre_parse.py in _parse_sub(source, state, verbose, nested) 
    413  start = source.tell() 
    414  while True: 
--> 415   itemsappend(_parse(source, state, verbose)) 
    416   if not sourcematch("|"): 
    417    break 

/home/dtn-/miniconda3/lib/python3.6/sre_parse.py in _parse(source, state, verbose) 
    550      if hi < lo: 
    551       msg = "bad character range %s-%s" % (this, that) 
--> 552       raise source.error(msg, len(this) + 1 + len(that)) 
    553      setappend((RANGE, (lo, hi))) 
    554     else: 

error: bad character range e-(at position 4

我相信肯定會有一些supid錯誤周圍「捆綁式= （[a-zA-Z] +）'，但我無法找到它。有人可以告訴我爲什麼嗎？ :)

來源

2017-04-27 yui_frank

你需要在開始處轉義'['''。 –

第一行也是''''我不認爲要麼@yui_frank要做什麼。 – cco

您需要轉義[和]並匹配空格。休息一切都很好。試試這個：

import re 

line = "[time-5.40052;node-1;line-638]NOTE:BundleTrace:good! one bundle recept, it's one hop! bp_header=,destination ip=10.0.0.3,source ip=10.0.0.1,source seqno=139,payload size=345,offset size=345,src time stamp=5,hop time stamp=5,bundle type=BundlePacket" 
r2 = re.compile(r'\[time-(\d+\.*\d*);node-(\d+\.*\d*);line-(\d+\.*\d*)\]NOTE:BundleTrace:good!\sone\sbundle\srecept,\sit\'s\sone\shop!\sbp_header=,destination\sip=10.0.0.(\d+\.*\d*),source\sip=10.0.0.(\d+\.*\d*),source\sseqno=(\d+\.*\d*),payload\ssize=(\d+\.*\d*),offset\ssize=(\d+\.*\d*),src\stime\sstamp=(\d+\.*\d*),hop\stime\sstamp=(\d+\.*\d*),bundle\stype=([a-zA-Z]+)', re.VERBOSE) 

hop = r2.match(line)

來源

2017-04-27 03:41:57 yeniv

謝謝你。 –

Python正則表達式錯誤：錯誤的字符

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