关于文件完整路径的正则提取

dongzhi1980

文件内容共4行，存储内容为文件的地址（pdf和.7z格式）和网页链接。
' }& \, y+ z$ X. Y0 w目标是：提取每个PDF文件的全名（形如abc.pdf等)及其前一项的ID（文件名前面一项，形如BUUXZJBF，BZ7QHC8S等8位数的ID标签）。
: X2 [+ T1 x' U" \6 R' P8 U- S# @% m由于，1.文件名中有特殊符号"\;"， 2.里面混杂了.7z文件。我在python re 下没有成功提取，请大家出手相助。注：只需提供正则表达式即可。谢谢
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, L! p7 U6 N& k' E% j7 M5 lfile = {E\:\\storage\\BUUXZJBF\\Kottwitz - 2011 - Xyz beginner's guide \; one book name .pdf},
6 \, F! }% d3 N; Efile = {E\:\\storage\\BZ7QHC8S\\Xyz programming - an introduction..pdf;E\:\\storage\\I5CN6Q4Y\\ABC Programming Advanced Introduction.7z;E\:\\storage\\LIEKLY4B\\NO programming - an advanced introduction chs..pdf;E\:\\storage\\4UVU3D66\\www.ccc-intro.org.html},
  E5 l, N3 M  \, A; X9 L  ^2 ^5 Ihowpublished = {http://www.123.org/}
file = {E\:\\storage\\CUUXZJBG\\Tomz - 2015 - OK beginner's guide another book name.pdf}

Oeasy

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1. import re
   
2. 
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3. string = """file = {E\:\\storage\\BUUXZJBF\\Kottwitz - 2011 - Xyz beginner's guide \; one book name .pdf},
   
4. file = {E\:\\storage\\BZ7QHC8S\\Xyz programming - an introduction..pdf;E\:\\storage\\I5CN6Q4Y\\ABC Programming Advanced Introduction.7z;E\:\\storage\\LIEKLY4B\\NO programming - an advanced introduction chs..pdf;E\:\\storage\\4UVU3D66\\www.ccc-intro.org.html},
   
5. howpublished = {http://www.123.org/}
   
6. file = {E\:\\storage\\CUUXZJBG\\Tomz - 2015 - OK beginner's guide another book name.pdf}"""
   
7. 
   / ^9 {# {( c4 u4 ~9 B" @
8. 
   
9. pattern = re.compile(r"\\([0-8A-Z]{8})\\([^:}]+?\.pdf)")
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10. 
    $ [" M% F+ y+ v
11. m = pattern.findall(string)
    
12. 
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13. for item in m:
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14.     print(item)

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输出

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1. ('BUUXZJBF', "Kottwitz - 2011 - Xyz beginner's guide \\; one book name .pdf")
   
2. ('BZ7QHC8S', 'Xyz programming - an introduction..pdf')
   
3. ('LIEKLY4B', 'NO programming - an advanced introduction chs..pdf')
   ' P% I9 R" i# H9 x. M* ]
4. ('CUUXZJBG', "Tomz - 2015 - OK beginner's guide another book name.pdf")

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dongzhi1980

Oeasy 发表于 2020-3-16 11:46
输出

) V% `: s4 v6 n; l' q5 n% D谢谢O大的详细解答，请问，
; e! d; A7 w  g. y, B- x文件名中多余的“\”怎么去除，真实文件名是"Kottwitz - 2011 - Xyz beginner's guide ; one book name .pdf"。
生成的字符串 '\\Kottwitz - 2011 - LaTeX beginner\'s guide \\; create high-quality and .pdf' 中
: l0 ]" H9 M" H4 ~4 y
/ A. T1 e8 N. z5 I1 {/ [' }) H多余的"\"导致程序后续操作产生问题。
7 D% L2 ^9 O2 f2 v. k2 y

Oeasy

dongzhi1980 发表于 2020-3-16 17:51
谢谢O大的详细解答，请问，
文件名中多余的“\”怎么去除，真实文件名是"Kottwitz - 2011 - Xyz beginner' ...

; {$ F3 S1 o# M$ z2 b7 Z0 z) b" {
抱歉手抖吧 0-9 敲成 0-8 了。
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1. import re
   
2. 
   
3. string = """file = {E\:\\storage\\BUUXZJBF\\Kottwitz - 2011 - Xyz beginner's guide \; one book name .pdf},
   
4. file = {E\:\\storage\\BZ7QHC8S\\Xyz programming - an introduction..pdf;E\:\\storage\\I5CN6Q4Y\\ABC Programming Advanced Introduction.7z;E\:\\storage\\LIEKLY4B\\NO programming - an advanced introduction chs..pdf;E\:\\storage\\4UVU3D66\\www.ccc-intro.org.html},
   
5. howpublished = {http://www.123.org/}
   
6. file = {E\:\\storage\\CUUXZJBG\\Tomz - 2015 - OK beginner's guide another book name.pdf}
   
7. file = {E\:\\Data\\storage\\2MTGE89K\\Matlab users guide_Symbolic Math Toolbox.pdf;E\:\\Data\\storage\\CS58DYJW\\Matlab users guide_Parallel Computing Toolbox.pdf;E\:\\Data\\storage\\IAR9VKWB\\Matlab Programming Fundamentals.pdf;E\:\\Data\\storage\\RV3RTI3V\\Matlab Mathematics.pdf}"""
   
8. 
   
9. 
   / w, L5 Y0 t7 o. C8 }/ q
10. pattern = re.compile(r"\\([0-9A-Z]{8})\\([^:}]+?\.pdf)")
    
11. 
    
12. m = pattern.findall(string)
    
13. 
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14. for item in m:
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15.     print(item[0], item[1].replace("\",""))

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输出
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1. BUUXZJBF Kottwitz - 2011 - Xyz beginner's guide ; one book name .pdf
   
2. BZ7QHC8S Xyz programming - an introduction..pdf
   
3. LIEKLY4B NO programming - an advanced introduction chs..pdf
   
4. CUUXZJBG Tomz - 2015 - OK beginner's guide another book name.pdf
   ' d) A- m8 A5 j- L2 \
5. 2MTGE89K Matlab users guide_Symbolic Math Toolbox.pdf
   
6. CS58DYJW Matlab users guide_Parallel Computing Toolbox.pdf
   0 C% ]8 d+ z. B
7. IAR9VKWB Matlab Programming Fundamentals.pdf
   $ J! Q* b3 H9 U2 P8 X1 k
8. RV3RTI3V Matlab Mathematics.pdf

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dongzhi1980

Oeasy 发表于 2020-3-16 18:36
9 ~. M' V* ?! b6 e) }抱歉手抖吧 0-9 敲成 0-8 了。

  o, A$ X' z- i& [2 ~再次感谢，0-8 的问题我自己仔细查看后给解决了，正想着“挖坑不填”的含意呢，正好收到回复了。意外的惊喜。
8 b5 i6 p( q; |' x+ M  }: V最后再麻烦你一次，如果不用 “：｝” 排除，改为用 “E\:” 和 “｝” 排除，用什么方法呢，在网上查了很多关于断言的操作，但还是不会用。
  g( c- D/ d$ a& M$ U谢谢！