{"id":1079558,"date":"2025-01-08T12:22:03","date_gmt":"2025-01-08T04:22:03","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1079558.html"},"modified":"2025-01-08T12:22:05","modified_gmt":"2025-01-08T04:22:05","slug":"python3%e5%a6%82%e4%bd%95%e5%88%a0%e9%99%a4%e5%ad%97%e7%ac%a6%e4%b8%b2-2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1079558.html","title":{"rendered":"python3\u5982\u4f55\u5220\u9664\u5b57\u7b26\u4e32"},"content":{"rendered":"

\"python3\u5982\u4f55\u5220\u9664\u5b57\u7b26\u4e32\"<\/p>\n

Python3 \u5220\u9664\u5b57\u7b26\u4e32\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u5305\u62ec\u4f7f\u7528\u5b57\u7b26\u4e32\u7684\u5185\u7f6e\u65b9\u6cd5\u3001\u5207\u7247\u3001\u6b63\u5219\u8868\u8fbe\u5f0f\u7b49\u3002\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u6709\uff1areplace()\u3001strip()\u3001\u5207\u7247\u3001translate()\u3001re.sub()\u3002\u5176\u4e2d\uff0c\u6700\u5e38\u89c1\u7684\u662f\u4f7f\u7528replace()\u65b9\u6cd5\u3002\u901a\u8fc7replace()\u65b9\u6cd5\uff0c\u4f60\u53ef\u4ee5\u6307\u5b9a\u8981\u5220\u9664\u7684\u5b50\u5b57\u7b26\u4e32\uff0c\u5e76\u5c06\u5176\u66ff\u6362\u4e3a\u7a7a\u5b57\u7b26\u4e32\u3002<\/strong><\/p>\n<\/p>\n

\u4e00\u3001replace()\u65b9\u6cd5\uff1a<\/strong><\/p>\n<\/p>\n

replace()\u65b9\u6cd5\u662f\u6700\u5e38\u7528\u7684\u5220\u9664\u5b57\u7b26\u4e32\u7684\u65b9\u6cd5\u4e4b\u4e00\u3002\u5b83\u7684\u8bed\u6cd5\u662fstr.replace(old, new[, max]), \u5176\u4e2dold\u662f\u8981\u88ab\u66ff\u6362\u7684\u5b50\u5b57\u7b26\u4e32\uff0cnew\u662f\u66ff\u6362\u540e\u7684\u5b57\u7b26\u4e32\uff08\u53ef\u4ee5\u662f\u7a7a\u5b57\u7b26\u4e32\uff09\uff0cmax\u662f\u6700\u5927\u66ff\u6362\u6b21\u6570\uff08\u53ef\u9009\uff09\u3002<\/p>\n<\/p>\n

text = "Hello, World!"<\/p>\n
new_text = text.replace("World", "")<\/p>\n
print(new_text)  # \u8f93\u51fa: Hello, !<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u5c06\u5b57\u7b26\u4e32\u4e2d\u7684"World"\u66ff\u6362\u4e3a\u7a7a\u5b57\u7b26\u4e32\uff0c\u4ece\u800c\u8fbe\u5230\u4e86\u5220\u9664"World"\u7684\u6548\u679c\u3002<\/p>\n<\/p>\n
\u4e8c\u3001strip()\u3001lstrip()\u3001rstrip()\u65b9\u6cd5\uff1a<\/strong><\/p>\n<\/p>\n
\u5982\u679c\u4f60\u60f3\u5220\u9664\u5b57\u7b26\u4e32\u4e24\u7aef\u7684\u7279\u5b9a\u5b57\u7b26\uff0c\u53ef\u4ee5\u4f7f\u7528strip()\u65b9\u6cd5\u3002strip()\u65b9\u6cd5\u4f1a\u5220\u9664\u5b57\u7b26\u4e32\u5f00\u5934\u548c\u7ed3\u5c3e\u7684\u6307\u5b9a\u5b57\u7b26\uff08\u9ed8\u8ba4\u4e3a\u7a7a\u683c\uff09\u3002lstrip()\u548crstrip()\u5206\u522b\u7528\u4e8e\u5220\u9664\u5b57\u7b26\u4e32\u5de6\u8fb9\u548c\u53f3\u8fb9\u7684\u6307\u5b9a\u5b57\u7b26\u3002<\/p>\n<\/p>\n
text = "   Hello, World!   "<\/p>\n
new_text = text.strip()  # \u5220\u9664\u4e24\u7aef\u7684\u7a7a\u683c<\/p>\n
print(new_text)  # \u8f93\u51fa: Hello, World!<\/p>\n
<\/code><\/pre>\n<\/p>\n
text = "!!!Hello, World!!!"<\/p>\n
new_text = text.strip("!")  # \u5220\u9664\u4e24\u7aef\u7684\u611f\u53f9\u53f7<\/p>\n
print(new_text)  # \u8f93\u51fa: Hello, World<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e09\u3001\u5207\u7247\uff1a<\/strong><\/p>\n<\/p>\n
\u5207\u7247\u662f\u4e00\u79cd\u975e\u5e38\u5f3a\u5927\u7684\u5b57\u7b26\u4e32\u64cd\u4f5c\u65b9\u6cd5\uff0c\u53ef\u4ee5\u7528\u6765\u5220\u9664\u5b57\u7b26\u4e32\u7684\u7279\u5b9a\u90e8\u5206\u3002\u901a\u8fc7\u6307\u5b9a\u5b57\u7b26\u4e32\u7684\u5f00\u59cb\u548c\u7ed3\u675f\u7d22\u5f15\uff0c\u4f60\u53ef\u4ee5\u8f7b\u677e\u5730\u83b7\u53d6\u5b57\u7b26\u4e32\u7684\u5b50\u5b57\u7b26\u4e32\u3002<\/p>\n<\/p>\n
text = "Hello, World!"<\/p>\n
new_text = text[:7] + text[12:]  # \u5220\u9664\u5b57\u7b26\u4e32\u4e2d\u7684"World"<\/p>\n
print(new_text)  # \u8f93\u51fa: Hello, !<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u5207\u7247\u64cd\u4f5c\u5c06\u5b57\u7b26\u4e32\u7684\u524d7\u4e2a\u5b57\u7b26\u548c\u540e\u9762\u7684\u5b57\u7b26\u62fc\u63a5\u8d77\u6765\uff0c\u4ece\u800c\u5220\u9664\u4e86"World"\u3002<\/p>\n<\/p>\n
\u56db\u3001translate()\u548cmaketrans()\u65b9\u6cd5\uff1a<\/strong><\/p>\n<\/p>\n
translate()\u65b9\u6cd5\u53ef\u4ee5\u6839\u636e\u4e00\u4e2a\u7ffb\u8bd1\u8868\uff08\u7531maketrans()\u65b9\u6cd5\u521b\u5efa\uff09\u6765\u66ff\u6362\u5b57\u7b26\u4e32\u4e2d\u7684\u5b57\u7b26\u3002\u8fd9\u4e2a\u65b9\u6cd5\u975e\u5e38\u9002\u5408\u7528\u4e8e\u5220\u9664\u591a\u4e2a\u4e0d\u540c\u7684\u5b57\u7b26\u3002<\/p>\n<\/p>\n
text = "Hello, World!"<\/p>\n
trans = str.maketrans("", "", "o")  # \u521b\u5efa\u7ffb\u8bd1\u8868\uff0c\u6307\u5b9a\u8981\u5220\u9664\u7684\u5b57\u7b26<\/p>\n
new_text = text.translate(trans)  # \u5220\u9664\u5b57\u7b26\u4e32\u4e2d\u7684\u6240\u6709'o'<\/p>\n
print(new_text)  # \u8f93\u51fa: Hell, Wrld!<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u7ffb\u8bd1\u8868\uff0c\u5c06\u6240\u6709\u7684'o'\u5b57\u7b26\u5220\u9664\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u6b63\u5219\u8868\u8fbe\u5f0f\uff08re\u6a21\u5757\uff09\uff1a<\/strong><\/p>\n<\/p>\n
\u6b63\u5219\u8868\u8fbe\u5f0f\u662f\u5904\u7406\u5b57\u7b26\u4e32\u7684\u5f3a\u5927\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u4e8e\u5404\u79cd\u590d\u6742\u7684\u5b57\u7b26\u4e32\u64cd\u4f5c\u3002re\u6a21\u5757\u63d0\u4f9b\u4e86sub()\u65b9\u6cd5\uff0c\u53ef\u4ee5\u7528\u6765\u5220\u9664\u5b57\u7b26\u4e32\u4e2d\u7684\u7279\u5b9a\u6a21\u5f0f\u3002<\/p>\n<\/p>\n
import re<\/p>\n
text = "Hello, World!"<\/p>\n
new_text = re.sub(r"World", "", text)  # \u5220\u9664\u5b57\u7b26\u4e32\u4e2d\u7684"World"<\/p>\n
print(new_text)  # \u8f93\u51fa: Hello, !<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528re.sub()\u65b9\u6cd5\u5c06\u5b57\u7b26\u4e32\u4e2d\u7684"World"\u66ff\u6362\u4e3a\u7a7a\u5b57\u7b26\u4e32\uff0c\u4ece\u800c\u8fbe\u5230\u4e86\u5220\u9664\u7684\u6548\u679c\u3002<\/p>\n<\/p>\n
\u603b\u7ed3\uff1a<\/strong><\/p>\n<\/p>\n
\u5728Python3\u4e2d\u5220\u9664\u5b57\u7b26\u4e32\u7684\u65b9\u6cd5\u6709\u5f88\u591a\uff0c\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u9002\u7528\u7684\u573a\u666f\u3002replace()\u65b9\u6cd5\u9002\u7528\u4e8e\u7b80\u5355\u7684\u5b57\u7b26\u4e32\u66ff\u6362\uff0cstrip()\u65b9\u6cd5\u9002\u7528\u4e8e\u5220\u9664\u5b57\u7b26\u4e32\u4e24\u7aef\u7684\u7279\u5b9a\u5b57\u7b26\uff0c\u5207\u7247\u9002\u7528\u4e8e\u5220\u9664\u5b57\u7b26\u4e32\u7684\u7279\u5b9a\u90e8\u5206\uff0ctranslate()\u65b9\u6cd5\u9002\u7528\u4e8e\u5220\u9664\u591a\u4e2a\u4e0d\u540c\u7684\u5b57\u7b26\uff0c\u800c\u6b63\u5219\u8868\u8fbe\u5f0f\u9002\u7528\u4e8e\u590d\u6742\u7684\u5b57\u7b26\u4e32\u6a21\u5f0f\u5339\u914d\u548c\u66ff\u6362\u3002\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u9ad8\u6548\u5730\u5b8c\u6210\u5b57\u7b26\u4e32\u5220\u9664\u64cd\u4f5c\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python3\u4e2d\u5220\u9664\u5b57\u7b26\u4e32\u7684\u7279\u5b9a\u5b57\u7b26\uff1f<\/strong>
\u8981\u5220\u9664\u5b57\u7b26\u4e32\u4e2d\u7684\u7279\u5b9a\u5b57\u7b26\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u7684replace()<\/code>\u65b9\u6cd5\u6216\u5b57\u7b26\u4e32\u5207\u7247\u3002replace()<\/code>\u65b9\u6cd5\u53ef\u4ee5\u7528\u6765\u5c06\u76ee\u6807\u5b57\u7b26\u66ff\u6362\u4e3a\u7a7a\u5b57\u7b26\u4e32\uff0c\u4f8b\u5982\uff1astr.replace('a', '')<\/code>\u5c06\u5220\u9664\u5b57\u7b26\u4e32\u4e2d\u7684\u6240\u6709'a'\u5b57\u7b26\u3002\u5207\u7247\u5219\u5141\u8bb8\u4f60\u901a\u8fc7\u7d22\u5f15\u9009\u62e9\u8981\u4fdd\u7559\u7684\u90e8\u5206\uff0c\u4ece\u800c\u5b9e\u73b0\u5220\u9664\u7684\u6548\u679c\u3002<\/p>\n
Python3\u4e2d\u662f\u5426\u6709\u5185\u5efa\u7684\u65b9\u6cd5\u7528\u4e8e\u5220\u9664\u5b57\u7b26\u4e32\u7684\u7a7a\u767d\uff1f<\/strong>
\u786e\u5b9e\u6709\uff01\u5728Python3\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528strip()<\/code>\u3001lstrip()<\/code>\u548crstrip()<\/code>\u65b9\u6cd5\u6765\u5220\u9664\u5b57\u7b26\u4e32\u4e24\u7aef\u6216\u7279\u5b9a\u4e00\u4fa7\u7684\u7a7a\u767d\u5b57\u7b26\u3002strip()<\/code>\u4f1a\u79fb\u9664\u5b57\u7b26\u4e32\u5f00\u5934\u548c\u7ed3\u5c3e\u7684\u7a7a\u767d\uff0clstrip()<\/code>\u4ec5\u5220\u9664\u5f00\u5934\u7684\u7a7a\u767d\uff0c\u800crstrip()<\/code>\u5219\u662f\u5220\u9664\u7ed3\u5c3e\u7684\u7a7a\u767d\u3002<\/p>\n
\u5982\u679c\u9700\u8981\u5220\u9664\u5b57\u7b26\u4e32\u4e2d\u7684\u591a\u4e2a\u5b57\u7b26\uff0c\u8be5\u5982\u4f55\u5904\u7406\uff1f<\/strong>
\u53ef\u4ee5\u4f7f\u7528re<\/code>\u6a21\u5757\u4e2d\u7684sub()<\/code>\u65b9\u6cd5\u6765\u5904\u7406\u591a\u5b57\u7b26\u5220\u9664\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u53ef\u4ee5\u4e00\u6b21\u6027\u5220\u9664\u591a\u4e2a\u4e0d\u540c\u7684\u5b57\u7b26\uff1are.sub('[abc]', '', my_string)<\/code>\u5c06\u5220\u9664\u5b57\u7b26\u4e32\u4e2d\u6240\u6709\u7684'a'\u3001'b'\u548c'c'\u5b57\u7b26\u3002\u8fd9\u6837\u7684\u65b9\u6cd5\u975e\u5e38\u7075\u6d3b\uff0c\u9002\u7528\u4e8e\u590d\u6742\u7684\u5220\u9664\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python3 \u5220\u9664\u5b57\u7b26\u4e32\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff0c\u5305\u62ec\u4f7f\u7528\u5b57\u7b26\u4e32\u7684\u5185\u7f6e\u65b9\u6cd5\u3001\u5207\u7247\u3001\u6b63\u5219\u8868\u8fbe\u5f0f\u7b49\u3002\u6700\u5e38\u7528\u7684\u65b9\u6cd5\u6709\uff1arepl […]","protected":false},"author":3,"featured_media":1079570,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1079558"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=1079558"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1079558\/revisions"}],"predecessor-version":[{"id":1079575,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1079558\/revisions\/1079575"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1079570"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1079558"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1079558"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1079558"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}