
在小学做题的时候,如果题目中有相同的数值,我们还可以通过人工比对查找出来。不过现在要用电脑处理的数据很多,我们需要借助某种工具,来帮我们筛选出重复的数据或是文件名。那么学了python的我们有没有什么解决办法呢?今天小编就教大家用re导出文本数据,具体举例如下:
文本内容如下,就是一个编译后的map,我想提取里面的symbol信息,地址,以及在哪些模块里面使用了
当下面有多行时,也就是在多个.o文件中使用时,怎么提取出每一个.o
表达式是:
1 | _([a-zA-Z0-9_]+)\s+([a-z0-9A-Z]{8})\s+defined\s+ in \s+[a-zA-Z0-9_]+.o\s+section\s+.+\n\s+used in \s+([a-zA-Z0-9_]+.o)\s*\n\s*(\w+.o)\n\s*(\w+.o)
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问题1:
当需要匹配多个“ ******.o”时如何匹配
问题2:
如何把所有满足条件的都匹配出来,
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | _PfTORQ_r_ThermEffCorrMult 000fe417 defined in torqmall.o section .bss
used in torqmctl.o
torqmrat.o
_PeTORQ_GearState 000fe419 defined in torqmall.o section .bss
used in torq_meth_jac.o
torq_mulf_jac.o
torqmgve.o
torqmgvv.o
etcdmtps.o
_PeTORQ_GearStatePrev 000fe41a defined in torqmall.o section .bss
_PeTORQ_GearStateDsrd 000fe41b defined in torqmall.o section .bss
_VfTORQ_AXIS_RPM_W_11Brk 000fe41c defined in torqmall.o section .bss
used in torqmdes.o
tqdrmall.o
|
解决方法:
re.findall(pattern, string, flags=0)
范例:
1 2 3 | >>> text = "He was carefully disguised but captured quickly by police."
>>> re.findall(r "\w+ly" , text)
[ 'carefully' , 'quickly' ]
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测试:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 | In [1]: yourstr= "" "_PfTORQ_r_ThermEffCorrMult 000fe417 defined in torqmall.o section .bss
used in torqmctl.o
torqmrat.o
_PeTORQ_GearState 000fe419 defined in torqmall.o section .bss
used in torq_meth_jac.o
torq_mulf_jac.o
torqmgve.o
torqmgvv.o
etcdmtps.o
_PeTORQ_GearStatePrev 000fe41a defined in torqmall.o section .bss
_PeTORQ_GearStateDsrd 000fe41b defined in torqmall.o section .bss
_VfTORQ_AXIS_RPM_W_11Brk 000fe41c defined in torqmall.o section .bss
used in torqmdes.o
tqdrmall.o" ""
In [2]: re.findall( '\w+\.o' ,yourstr)
Out[2]:
[ 'torqmall.o' ,
'torqmctl.o' ,
'torqmrat.o' ,
'torqmall.o' ,
'torq_meth_jac.o' ,
'torq_mulf_jac.o' ,
'torqmgve.o' ,
'torqmgvv.o' ,
'etcdmtps.o' ,
'torqmall.o' ,
'torqmall.o' ,
'torqmall.o' ,
'torqmdes.o' ,
'tqdrmall.o' ]
|
看完后小伙伴们会发现,我们想要的.o的结果已经出来啦,说明re.findall针对此类问题的解决有效果哦~更多Python学习推荐:PyThon学习网教学中心。