python中如何使用正则表达式从字符串中删除特定字符？ python如何用正则表达式匹配两个字符串之间的字符串中的某...
python\u4e2d\u5229\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u7684\u5220\u9664\u7279\u5b9a\u5b57\u7b26\u7684\u95ee\u9898\u4f60\u662f\u600e\u4e48\u5f04\u7684\uff1f
p1.sub(r'\1\2', txt)
p2.sub(r'\1\2', txt)
\u5417\uff1f
\u6211\u7a0d\u5fae\u8bd5\u4e86\u4e00\u4e0b\uff0c\u597d\u50cf\u6ca1\u95ee\u9898
\u4f60\u597d\uff0c\u5339\u914d\u548c\u66ff\u6362\u662f\u4e24\u4e2a\u64cd\u4f5c\uff0c\u4f60\u53ef\u4ee5\u5206\u4e24\u6b65\u6765\u505a\u3002
\u7b2c\u4e00\u6b65\u5339\u914d\uff1a
hit=re.search(\u201c(\\)\u201d,inputstr)
\u7b2c\u4e8c\u6b65\u66ff\u6362
result=re.sub\uff08\u2018\u201d\u2019\uff0c\u2018\\u201d\u2019\uff0cinputstr\uff09
绛旓細newstring, subject) 2.鏇挎崲鎵鏈夊尮閰鐨瀛愪覆锛浣跨敤姝ｅ垯琛ㄨ揪寮忓璞★級 reobj = re.compile(regex) result = reobj.sub(newstring, subject) 瀛楃涓叉媶鍒 1.瀛楃涓叉媶鍒 result = re.split(regex, subject) 2.瀛楃涓叉媶鍒嗭紙浣跨敤姝ｅ垯琛ㄧず寮忓璞★級 reobj = re.compile(regex) result = reobj.split(subj...
绛旓細涓婅妭鎴戜滑璇村埌 Python 姝ｅ垯琛ㄨ揪寮忕殑鍩烘湰瀛楃锛屼互鍙婅繖浜涘瓧绗︾殑鐢ㄦ硶 浠婂ぉ锛屾垜浠户缁璁 Python 涓涓浜涙墿灞曟爣璁版硶锛屼互鍙婁竴浜涚壒娈婂簭鍒 (?...) : 杩欑鎵╁睍鏍囪娉曚互鎷彿鍐 ? 寮澶达紝鍏跺悗绗竴涓瓧绗﹀喅瀹氫簡閲囩敤浠涔堟牱鐨勮娉曘傚湪 ? 鍚庨潰娣诲姞( 'a', 'i', 'L', 'm', 's', 'u', 'x' 涓殑涓涓...
绛旓細鐢 python 姝ｅ垯鏍￠獙鎵嬫満鍙鐨渚嬪瓙 浠ヤ笅 python2 浠ｇ爜杩愯閫氳繃 coding=utf-8import reimport sysimport os# 姝ｅ垯鍖归厤鐢佃瘽鍙风爜# phone="13893670000"phone = raw_input('please give a phone number:')p2 = re.compile('^0\d{2,3}\d{7,8}$|^1[358]\d{9}$|^147\d{8}')phonematch = p...
绛旓細'.1'琛ㄧず鍖归厤'\.[0-9]{1,3}'鐨鍐呭锛堟渶鍚庝竴娆￠噸澶嶆椂涓.1锛夌敱浜('\.[0-9]{1,3}')涓洪渶瑕侀噸澶嶄笁娆＄殑鍒嗙粍锛岃鎷彿涓嶈兘鐪佺暐 鑰浣跨敤findall灏变竴瀹氫細鏄剧ず鎷彿鍒嗙粍鐨勫唴瀹 鑻ユ兂鍙樉绀127.0.0.1鑰屼笉鏄剧ず'.1'锛屽彲鑰冭檻浣跨敤match鏂规硶 杩斿洖浠庡瓧绗︿覆璧峰浣嶇疆寮濮嬶紝绗竴娆″尮閰姝ｅ垯琛ㄨ揪寮忕殑鍐呭 match...
绛旓細>>> re.match(r'bPy[a-z]+','Python') #鍔犲瓧绗︹檙鈥欙紝鍙互淇濊瘉鍘熺敓瀛楃涓 9銆乵atch()鏂规硶 Match()鏂规硶 灏濊瘯浠庡瓧绗︿覆鐨勮捣濮嬩綅缃尮閰嶄竴涓ā寮忥紝濡傛灉涓嶆槸璧峰浣嶇疆鍖归厤鎴愬姛鐨勮瘽锛宮atch() 灏辫繑鍥 none銆傝娉曟牸寮忥細re.match(pattern, string, [flags])鍏朵腑锛宲attern琛ㄧず鍖归厤鐨勬鍒欒〃杈寮忥紱string鏄...
绛旓細python姝ｅ垯琛ㄨ揪寮忔槸浣跨敤鍗曚釜瀛楃涓叉潵鎻忚堪銆佸尮閰嶆煇涓彞娉曡鍒欑殑瀛楃涓诧紝甯歌鐢ㄦ潵妫绱佹浛鎹㈤偅浜涚鍚堟煇涓ā寮忥紙瑙勫垯锛夌殑鏂囨湰銆傛渶鍒鐨勬鍒欒〃杈寮忓嚭鐜颁簬鐞嗚璁＄畻鏈虹瀛︾殑鑷姩鎺у埗鐞嗚鍜屽舰寮忓寲璇█鐞嗚涓1950 骞达紝鏁板瀹舵柉钂傝姮路绉戝皵路鍏嬭幈灏鍒╃敤绉颁箣涓衡滄鍒欓泦鍚堚濈殑鏁板绗﹀彿鏉ユ弿杩版妯″瀷銆傝偗路姹ゆ櫘閫婂皢姝ょ鍙...
绛旓細鐢╬ython姝ｅ垯琛ㄨ揪寮忓彲浠ュ仛鍒,鍥犱负鐐瑰湪姝ｅ垯琛ㄨ揪寮忎腑鍙互浠ｈ〃浠绘剰瀛楃(闄ゅ洖杞︽崲琛岀澶)姝ｅ垯琛ㄨ揪寮 (\-?\d+). 鏇挎崲鎴 \1\t (\1琛ㄧず绗竴鎹曡幏缁勭殑鏁版嵁)瀹屾暣鐨凱ython绋嬪簭濡備笅 import res = '-111•485503•鍓╀綑閮ㄥ垎'regex = r'(\-?\d+).'result = re.sub(regex,r"\1\t",...
绛旓細鍦ㄨ璇█涓幓闄ゅ瓧绗︿覆涓鐨绗﹀彿鏂瑰紡鏈夛細浣跨敤姝ｅ垯琛ㄨ揪寮忋佷娇鐢ㄥ垪琛ㄦ帹瀵煎紡銆1銆佷娇鐢ㄦ鍒欒〃杈惧紡锛圧egex锛夛細姝ｅ垯琛ㄨ揪寮忔槸涓涓己澶х殑鏂囨湰澶勭悊宸ュ叿锛屽彲浠ラ氳繃鍖归厤銆佹煡鎵惧拰鏇挎崲瀛楃涓蹭腑鐨勭壒瀹氭ā寮忔潵瀹炵幇鍘婚櫎鏍囩偣绗﹀彿鐨勫姛鑳姐傚彲浠ヤ娇鐢╮e妯″潡涓殑sub锛堬級鍑芥暟鏉ユ浛鎹㈡爣鐐圭鍙枫2銆佷娇鐢ㄥ垪琛ㄦ帹瀵煎紡锛氬彲浠ュ皢鏍囩偣绗﹀彿浣滀负鍒楄〃...
绛旓細s='澶у尯锛氱數淇′竴鍖'print(re.search(r'[:锛歖(\w+).[鍖篯',s).group(1))
绛旓細## x{n,m} 鍖归厤 x 瀛楃锛岃嚦灏 n 娆★紝鑷冲 m 娆°## (a|b|c) 瑕佷箞鍖归厤 a锛岃涔堝尮閰 b锛岃涔堝尮閰 c銆## (x) 涓鑸儏鍐典笅琛ㄧず涓涓蹇嗙粍 (remembered group)銆備綘鍙互鍒╃敤 re.search 鍑芥暟杩斿洖瀵## 璞鐨 groups() 鍑芥暟鑾峰彇瀹冪殑鍊笺##姝ｅ垯琛ㄨ揪寮忎腑鐨勭偣鍙烽氬父鎰忓懗鐫 鈥滃尮閰嶄换鎰忓崟瀛楃鈥
