[英]Optional Char in python regex
I have a string as below:-我有一个字符串如下:-
<option id="ps_account_type_opt_1" value="1" selected="">[ Active Directory ]</option>\n<option id="ps_account_type_opt_2" value="2">Local</option>
I was trying to get "value" from the above string using a generic regular expression similar to below one.我试图使用类似于下面的通用正则表达式从上面的字符串中获取“值”。
VARIABLE = [ Active Directory ]变量 = [活动目录]
or或者
VARIABLE = Local变量 = 本地
or或者
VARIABLE = Active Directory变量 = 活动目录
<option(.*)value="(\d+)"(.*)>VARIABLE</option>
The problem is i need to change my VARIABLE from [ Active Directory ] to \\[ Active Directory \\].问题是我需要将我的变量从 [ Active Directory ] 更改为 \\[ Active Directory \\]。 What should i change in regular expression so that "[" and "]" becomes optional.
我应该在正则表达式中更改什么,以便“[”和“]”变为可选。
Try this...尝试这个...
<option[^>]+>\[?(?<VARIABLE>.+?)\]?<\/option>
Tested here: https://regex101.com/r/SonFgU/3在这里测试: https : //regex101.com/r/SonFgU/3
Put a ?
放一个
?
after each character or group that you require to be optional.在您需要可选的每个字符或组之后。
Example: abc?
示例:
abc?
will match both abc
and ab
, because the c?
将匹配
abc
和ab
,因为c?
is optional.是可选的。
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