在Python中使用re模块提取两个括号之间的数据

Question

这是一个测试字符串 "透明的链接(url(http://www.google.com/chart?chs=630x100&cht=bvs&chxt=x&chxl=0:%7C1840%7C1860%7C1880%7C1900%7C1920%7C1940%7C1960%7C1980%7C2000%7C&chxr=0,0,100&chxs=0,676767,11.3000002,0,tl,676767,676767&chd=e:D9AACPFjGWAAGDLfCeFgBvHLLSCZGED5GOKwDKCxJmF2FwFfERFwEZGcEJHlENJDJ9I0HQDjE-MAK2J9NMI9IAFtNaIOKtGoG2IYKBFvLEJmMLHdIFHXG.IPHrK2I9ULROI8SfHRFTeCIrQPOwXgPHVxQkbCbhg8iDwIvKkety..AAAAAAAA&chbh=7,0,0&chg=11.11,0,5,6&chxp=0,0.0,11.1,22.2,33.3,44.4,55.6,66.7,77.8,88.9&chco=3366cc,bbcced&chm=R,bbbbbb,0,0.9954,1.0%7Ch,bbbbbb,0,1.0,1.0,1&chxs=0,000000,11,-1&hl=en)"

我想用Python的re模块提取两个括号之间的所有数据——第一个括号是链接后面的那个，最后一个括号是字符串结尾的那个。

Answer 1

这段代码的作用是处理一些数据，通常是在程序中用来进行计算或者操作。具体来说，它可能会从某个地方获取数据，然后对这些数据进行分析或者转换，最后输出结果。

在编程中，我们常常需要用到这样的代码块，它们帮助我们自动化一些重复的任务，让我们的工作变得更加高效。

如果你对这段代码有疑问，可以尝试逐行理解它的每个部分，看看每一行是做什么的，这样会帮助你更好地掌握编程的基本概念。

jcomeau@intrepid:/tmp$ python
Python 2.6.7 (r267:88850, Jun 13 2011, 22:03:32) 
[GCC 4.6.1 20110608 (prerelease)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import re
>>> re.compile('\(([^)]*)\)').search("transparent url(http://www.google.com/chart?chs=630x100&cht=bvs&chxt=x&chxl=0:%7C1840%7C1860%7C1880%7C1900%7C1920%7C1940%7C1960%7C1980%7C2000%7C&chxr=0,0,100&chxs=0,676767,11.3000002,0,tl,676767,676767&chd=e:D9AACPFjGWAAGDLfCeFgBvHLLSCZGED5GOKwDKCxJmF2FwFfERFwEZGcEJHlENJDJ9I0HQDjE-MAK2J9NMI9IAFtNaIOKtGoG2IYKBFvLEJmMLHdIFHXG.IPHrK2I9ULROI8SfHRFTeCIrQPOwXgPHVxQkbCbhg8iDwIvKkety..AAAAAAAA&chbh=7,0,0&chg=11.11,0,5,6&chxp=0,0.0,11.1,22.2,33.3,44.4,55.6,66.7,77.8,88.9&chco=3366cc,bbcced&chm=R,bbbbbb,0,0.9954,1.0%7Ch,bbbbbb,0,1.0,1.0,1&chxs=0,000000,11,-1&hl=en)").groups()[0]
'http://www.google.com/chart?chs=630x100&cht=bvs&chxt=x&chxl=0:%7C1840%7C1860%7C1880%7C1900%7C1920%7C1940%7C1960%7C1980%7C2000%7C&chxr=0,0,100&chxs=0,676767,11.3000002,0,tl,676767,676767&chd=e:D9AACPFjGWAAGDLfCeFgBvHLLSCZGED5GOKwDKCxJmF2FwFfERFwEZGcEJHlENJDJ9I0HQDjE-MAK2J9NMI9IAFtNaIOKtGoG2IYKBFvLEJmMLHdIFHXG.IPHrK2I9ULROI8SfHRFTeCIrQPOwXgPHVxQkbCbhg8iDwIvKkety..AAAAAAAA&chbh=7,0,0&chg=11.11,0,5,6&chxp=0,0.0,11.1,22.2,33.3,44.4,55.6,66.7,77.8,88.9&chco=3366cc,bbcced&chm=R,bbbbbb,0,0.9954,1.0%7Ch,bbbbbb,0,1.0,1.0,1&chxs=0,000000,11,-1&hl=en'