3/21/2023 0 Comments Regex capture group![]() this also helps to avoid ambiguity between backreference and digits that follow.\g, \g etc (not limited to 99) to refer to the corresponding capture group.\0 and \NNN will be interpreted as octal value.provided there are no digit characters after. ![]() \1, \2 up to \99 to refer to the corresponding capture group.The below syntax variations is applicable for replacement section, assuming they are used within raw strings. The syntax is \N or \g where N is the capture group you want. Another advantage is that you can apply quantifiers to backreferences. Backreferences provide the same functionality, with the advantage that these can be directly used in RE definition as well as replacement section without having to invoke re.Match objects. ![]() You have already seen how to use re.Match object to refer to the text captured by groups. Backreferenceīackreferences are like variables in a programming language. You'll also learn some of the special grouping syntax for cases where plain capture groups isn't enough. This chapter will show how to reuse portion matched by capture groups via backreferences within RE definition and replacement section. ![]()
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