def_compile(pattern,flags):# 编译正则表达式的过程# 处理传入的标志常量ifisinstance(flags,RegexFlag):flags=flags.valuetry:# 搜索缓存中是否有已经编译完成的该正则表达式# 如果有的话直接返回编译结果,避免重复编译,提高效率# _cache是re模块中定义用作缓存的一个字典return_cache[type(pattern),pattern,flags]e...
https://docs.python.org/3.7/library/re.html#module-re Regular Expression HOWTO — Python 3.7.4 documentation https://docs.python.org/3/howto/regex.html regex - Get all unnamed groups in a Python match object - Stack Overflow https://stackoverflow.com/questions/30293064/get-all-unname...
Regex: 正则表达式 import re判断是否匹配 re.match(r'^[aeiou]', str) 以第二个参数指定的字符替换原字符串中内容 re.sub(r'^[aeiou]', '?', str) re.sub(r'(xyz)', r'\1', str)编译生成独立的正则表达式对象 expr = re.compile(r'^...$') expr.match(...) expr.sub(...) 下面列举了...
Queue Module Deque Module Webbrowser Module tkinter pyautogui module Indexing and Slicing Plotting with Matplotlib graph-tool Generators Reduce Map Function Exponentiation Searching Sorting, Minimum and Maximum Counting The Print Function Regular Expressions (Regex) Copying data Context Managers (“with” ...
When you are using lots of different regexes, you should keep your compiled expressions for those which are used multiple times, so they’re not flushed out of the regex cache when the cache is full. Also, please check theofficial documentationwhich says, The compiled versions of the most re...
This week on the show, we have David Amos from the Real Python team to discuss a recent two-part series on Regex in Python. We also talk about another recent article on the site about views vs copies in Pandas. David also brings a few other articles and projects from the wider Python...
metacharacters# (the back references to the captured groups) so we use a raw# string for that as well.regex =r"([a-zA-Z]+) (\d+)"# This will reorder the string and print:# 24 of June, 9 of August, 12 of Decprint(re.sub(regex,r"\2 of \1","June 24, August 9, Dec 12...
Algorithm for patterns (generic regex) New match rule for “types” Add __match__ predicate and refactor cases. I wonder, can Pattern cases be refactored? Maybe “visit” should allow case action generators? isinstance(result, types.GeneratorType) ...
A rewrite of Python's builtin doctest module (with pytest plugin integration) with AST instead of REGEX. - Erotemic/xdoctest
If none of the PyInputPlus module’s, functions fit your needs, but you’d still like the other features that PyInputPlus provides, you can call inputCustom() and pass your own custom validation function for PyInputPlus to use. The documentation at https://pyinputplus.readthedocs.io/en/...