The regex_syntax Module

(Obsolete) The regex_syntax module, shown in Example 14-35, contains a bunch of flags that can be used to change the behavior of the regex regular expression module.

Example 14-35. Using the regex_syntax Module

File: regex-syntax-example-1.py

import regex_syntax
import regex

def compile(pattern, syntax):
 syntax = regex.set_syntax(syntax)
 try:
 pattern = regex.compile(pattern)
 finally:
 # restore original syntax
 regex.set_syntax(syntax)
 return pattern

def compile_awk(pattern):
 return compile(pattern, regex_syntax.RE_SYNTAX_AWK)

def compile_grep(pattern):
 return compile(pattern, regex_syntax.RE_SYNTAX_GREP)

def compile_emacs(pattern):
 return compile(pattern, regex_syntax.RE_SYNTAX_EMACS)