RegExpSub

Run a sequence of arbitrary regular expression substitutions.

Parameters:

• patterns: a list of patterns to use by default

• lang_patterns: a dictionary or list of patterns to use for specific languages

Multiple substitutions are applied in the given order. The default patterns are replaced with language-specific patterns when the corresponding index (starting from 0) is found in the lang_patterns dictionary. The lang_patterns argument may also be a list, if you e.g. want to use separate patterns for all languages.

The substitution patterns are 4-tuples containing the regular expression, replacement, count (0 = substitute all) and flags (list of flag constants in the re library, e.g. ["I", "A"]). The regular expressions are first compiled with re.compile, and then the substitutions are applied with re.sub.