Chapter 17. Regular expressions
This chapter covers
- Understanding regular expressions
- Creating regular expressions with special characters
- Using raw strings in regular expressions
- Extracting matched text from strings
- Substituting text with regular expressions
In some sense, we shouldn’t discuss regular expressions in this book at all. They’re implemented by a single Python module and are advanced enough that they don’t even come as part of the standard library in languages like C or Java. But if you’re using Python, you’re probably doing text parsing; and if you’re doing that, then regular expressions are too useful to be ignored. If you use Perl, Tcl, or UNIX, you may be familiar with regular expressions; if not, this chapter will go into ...
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