Question

我有json字符串：

s = '''
{"messages":[],

"fileToTestMapForAllFiles":{"/pfe/usp/include/nat_util.h":[{"profile":"Component_toxicity_L2VPN_L2CKT_L3VPN_VPLS_VMX","occam":0,"releases":"15.1 and after","image":"junos-x86-64-*.vmdk","feature":"-","platform":"-","testSystem":"inception.juniper.net","enhancedIp":0,"id":0,"testId":"2","gating":"GATING","mandatory":""},
{"profile":"Component_toxicity_ipv46_bfd_ae_ifstate_VMX","occam":0,"releases":"15.1 and after","image":"junos-x86-64-*.vmdk","feature":"-","platform":"-","testSystem":"inception.juniper.net","enhancedIp":0,"id":0,"testId":"8","gating":"NON_GATING","mandatory":""},
{"profile":"Component_toxicity_GRES_NSR_VMX","occam":0,"releases":"15.1 and after","image":"junos-x86-64-*.vmdk","feature":"-","platform":"-","testSystem":"inception.juniper.net","enhancedIp":0,"id":0,"testId":"9","gating":"GATING","mandatory":""},
{"profile":"Component_toxicity_mcast_VMX","occam":0,"releases":"15.1 and after","image":"junos-x86-64-*.vmdk","feature":"-","platform":"","testSystem":"inception.juniper.net","enhancedIp":0,"id":0,"testId":"10","gating":"GATING","mandatory":""},
{"profile":"RPD_PC_Basic_Sanity_ST","occam":1,"releases":"15.1 and after","image":"junos-x86-64-*.vmdk,junos-x86-32-*.vmdk","feature":"rpd","platform":"vmx","testSystem":"inception.juniper.net","enhancedIp":0,"id":0,"testId":"129","gating":"GATING","mandatory":""},
{"profile":"RPD_PC_MISC","occam":1,"releases":"15.1 and after","image":"-","feature":"BBE-SANITY","platform":"mx-neo","testSystem":"inception.juniper.net","enhancedIp":1,"id":0,"testId":"387","gating":"GATING","mandatory":"18.2DCB,15.1F6-S10,17.2X75-D90,15.1R7,16.1R7,17.3R3,17.4R2,18.1R1,"}]},
"fileToTestMappingNotExist":[],"filesNotAdded":[],"validationFailedForTheseFiles":[],"filesToAdd":[],"invalidPathNames":[]}
'''

当我打电话时，我需要找到模式RPD_PC_<[anyword]>：

print re.findall(r"RPD_PC_", s)
['RPD_PC_', 'RPD_PC_']

因为字符串包含字符串：

['RPD_PC_Basic_Sanity_ST'] ['RPD_PC_MISC']

哪种模式只会查找RPD_PC_MISC，而不是RPD_PC_Basic_Sanity_ST？

Answer 1

你可以接受下一个"的任何内容：

RPD_PC_[^"]+

[^"]+会匹配下一个"的一个或多个字符。

更强大的方法是确保匹配前面有"：

"(RPD_PC_[^"]+)

re.findall仅打印捕获的组匹配。

（零宽度）正面观察也会起作用：

(?<=")RPD_PC_[^"]+

如果您想明确匹配以下"，请使用前瞻：

(?<=")RPD_PC_[^"]+(?=")

示例：

In [124]: re.findall(r'RPD_PC_[^"]+', s) Out[124]: ['RPD_PC_Basic_Sanity_ST', 'RPD_PC_MISC'] In [125]: re.findall(r'"(RPD_PC_[^"]+)', s) Out[125]: ['RPD_PC_Basic_Sanity_ST', 'RPD_PC_MISC'] In [126]: re.findall(r'(?<=")RPD_PC_[^"]+', s) Out[126]: ['RPD_PC_Basic_Sanity_ST', 'RPD_PC_MISC']

修改

如果您只想匹配RPD_PC_MISC，请匹配一个或多个不是_ / "的字符，后跟"：

(?<=")RPD_PC_[^_"]+(?=")

所以：

In [127]: re.findall(r'(?<=")RPD_PC_[^_"]+(?=")', s) Out[127]: ['RPD_PC_MISC']

重新找到所有功能

1 个答案: