{"id":968325,"date":"2024-12-27T05:05:58","date_gmt":"2024-12-26T21:05:58","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/968325.html"},"modified":"2024-12-27T05:06:00","modified_gmt":"2024-12-26T21:06:00","slug":"%e5%a6%82%e4%bd%95%e8%ae%a9python%e5%ad%97%e7%ac%a6%e6%9b%bf%e6%8d%a2","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/968325.html","title":{"rendered":"\u5982\u4f55\u8ba9python\u5b57\u7b26\u66ff\u6362"},"content":{"rendered":"

\"\u5982\u4f55\u8ba9python\u5b57\u7b26\u66ff\u6362\"<\/p>\n

\u5728Python\u4e2d\u8fdb\u884c\u5b57\u7b26\u66ff\u6362\u7684\u4e3b\u8981\u65b9\u6cd5\u6709\uff1a\u4f7f\u7528\u5b57\u7b26\u4e32\u7684replace()<\/code>\u65b9\u6cd5\u3001\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u7684re.sub()<\/code>\u65b9\u6cd5\u3001\u901a\u8fc7\u5b57\u7b26\u6620\u5c04\u7684str.maketrans()<\/code>\u548ctranslate()<\/code>\u65b9\u6cd5\u3002<\/strong>\u5176\u4e2d\uff0creplace()<\/code>\u65b9\u6cd5\u662f\u6700\u5e38\u7528\u7684\uff0c\u56e0\u4e3a\u5b83\u7b80\u5355\u76f4\u89c2\uff0c\u9002\u5408\u5927\u591a\u6570\u5b57\u7b26\u66ff\u6362\u7684\u573a\u666f\u3002\u6b63\u5219\u8868\u8fbe\u5f0f\u5219\u9002\u5408\u590d\u6742\u7684\u66ff\u6362\u9700\u6c42\uff0cstr.maketrans()<\/code>\u548ctranslate()<\/code>\u65b9\u6cd5\u5219\u7528\u4e8e\u591a\u5b57\u7b26\u66ff\u6362\u6216\u7ffb\u8bd1\u3002\u4e0b\u9762\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u51e0\u79cd\u65b9\u6cd5\u53ca\u5176\u5e94\u7528\u573a\u666f\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528replace()<\/code>\u65b9\u6cd5<\/p>\n<\/p>\n

replace()<\/code>\u65b9\u6cd5\u662fPython\u4e2d\u5b57\u7b26\u4e32\u5bf9\u8c61\u7684\u4e00\u4e2a\u65b9\u6cd5\uff0c\u7528\u4e8e\u66ff\u6362\u5b57\u7b26\u4e32\u4e2d\u7684\u5b50\u5b57\u7b26\u4e32\u3002\u5b83\u7684\u57fa\u672c\u8bed\u6cd5\u662fstring.replace(old, new[, count])<\/code>\uff0c\u5176\u4e2dold<\/code>\u662f\u8981\u88ab\u66ff\u6362\u7684\u5b50\u5b57\u7b26\u4e32\uff0cnew<\/code>\u662f\u66ff\u6362\u540e\u7684\u5b50\u5b57\u7b26\u4e32\uff0ccount<\/code>\u662f\u53ef\u9009\u53c2\u6570\uff0c\u8868\u793a\u66ff\u6362\u7684\u6b21\u6570\u3002<\/p>\n<\/p>\n

1\u3001\u57fa\u672c\u7528\u6cd5<\/h3>\n<\/p>\n

replace()<\/code>\u65b9\u6cd5\u6700\u5e38\u7528\u4e8e\u7b80\u5355\u7684\u5b57\u7b26\u4e32\u66ff\u6362\u3002\u4f8b\u5982\uff0c\u5c06\u5b57\u7b26\u4e32\u4e2d\u7684\u67d0\u4e2a\u5355\u8bcd\u66ff\u6362\u4e3a\u53e6\u4e00\u4e2a\u5355\u8bcd\uff1a<\/p>\n<\/p>\n

text = "Hello World"<\/p>\n
new_text = text.replace("World", "Python")<\/p>\n
print(new_text)  # \u8f93\u51fa: Hello Python<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0creplace()<\/code>\u65b9\u6cd5\u5c06\u5b57\u7b26\u4e32"World"<\/code>\u66ff\u6362\u4e3a"Python"<\/code>\u3002<\/p>\n<\/p>\n
2\u3001\u6307\u5b9a\u66ff\u6362\u6b21\u6570<\/h3>\n<\/p>\n
replace()<\/code>\u65b9\u6cd5\u8fd8\u5141\u8bb8\u6307\u5b9a\u66ff\u6362\u7684\u6b21\u6570\uff0c\u901a\u8fc7\u7b2c\u4e09\u4e2a\u53c2\u6570count<\/code>\u6765\u5b9e\u73b0\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
text = "ababab"<\/p>\n
new_text = text.replace("a", "o", 2)<\/p>\n
print(new_text)  # \u8f93\u51fa: obobab<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u53ea\u66ff\u6362\u4e86\u524d\u4e24\u4e2a"a"<\/code>\u5b57\u7b26\u4e3a"o"<\/code>\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u7684re.sub()<\/code>\u65b9\u6cd5<\/p>\n<\/p>\n
\u6b63\u5219\u8868\u8fbe\u5f0f\u662f\u5904\u7406\u590d\u6742\u5b57\u7b26\u4e32\u6a21\u5f0f\u7684\u5f3a\u5927\u5de5\u5177\uff0cPython\u7684re<\/code>\u6a21\u5757\u63d0\u4f9b\u4e86sub()<\/code>\u65b9\u6cd5\u7528\u4e8e\u66ff\u6362\u3002re.sub()<\/code>\u7684\u57fa\u672c\u8bed\u6cd5\u662fre.sub(pattern, repl, string, count=0, flags=0)<\/code>\u3002<\/p>\n<\/p>\n
1\u3001\u57fa\u672c\u7528\u6cd5<\/h3>\n<\/p>\n
\u6b63\u5219\u8868\u8fbe\u5f0f\u53ef\u4ee5\u7528\u4e8e\u66f4\u52a0\u590d\u6742\u7684\u66ff\u6362\uff0c\u4f8b\u5982\uff0c\u66ff\u6362\u6240\u6709\u7684\u6570\u5b57\uff1a<\/p>\n<\/p>\n
import re<\/p>\n
text = "abc123def456"<\/p>\n
new_text = re.sub(r'\\d+', '*', text)<\/p>\n
print(new_text)  # \u8f93\u51fa: abc*def*<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u91cc\uff0c\\d+<\/code>\u662f\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f\uff0c\u8868\u793a\u5339\u914d\u4e00\u4e2a\u6216\u591a\u4e2a\u6570\u5b57\uff0c*<\/code>\u662f\u66ff\u6362\u540e\u7684\u5b57\u7b26\u3002<\/p>\n<\/p>\n
2\u3001\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f<\/h3>\n<\/p>\n
\u6b63\u5219\u8868\u8fbe\u5f0f\u5141\u8bb8\u4f7f\u7528\u590d\u6742\u7684\u6a21\u5f0f\u6765\u5339\u914d\u548c\u66ff\u6362\u5b57\u7b26\u4e32\u3002\u4f8b\u5982\uff0c\u66ff\u6362\u6240\u6709\u7684\u5355\u8bcd\u5b57\u7b26\u4e3aX<\/code>\uff1a<\/p>\n<\/p>\n
text = "Hello World! 123"<\/p>\n
new_text = re.sub(r'\\w', 'X', text)<\/p>\n
print(new_text)  # \u8f93\u51fa: XXXXX XXXXX! XXX<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528str.maketrans()<\/code>\u548ctranslate()<\/code>\u65b9\u6cd5<\/p>\n<\/p>\n
\u5bf9\u4e8e\u591a\u5b57\u7b26\u66ff\u6362\uff0cPython\u63d0\u4f9b\u4e86str.maketrans()<\/code>\u548ctranslate()<\/code>\u65b9\u6cd5\uff0c\u8fd9\u4e24\u4e2a\u65b9\u6cd5\u7ed3\u5408\u4f7f\u7528\u53ef\u4ee5\u5b9e\u73b0\u5b57\u7b26\u7684\u6279\u91cf\u66ff\u6362\u3002<\/p>\n<\/p>\n
1\u3001\u57fa\u672c\u7528\u6cd5<\/h3>\n<\/p>\n
str.maketrans()<\/code>\u521b\u5efa\u4e00\u4e2a\u5b57\u7b26\u6620\u5c04\u8868\uff0ctranslate()<\/code>\u5e94\u7528\u8fd9\u4e2a\u6620\u5c04\u8868\u8fdb\u884c\u66ff\u6362\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n
intab = "aeiou"<\/p>\n
outtab = "12345"<\/p>\n
trantab = str.maketrans(intab, outtab)<\/p>\n
text = "hello world"<\/p>\n
new_text = text.translate(trantab)<\/p>\n
print(new_text)  # \u8f93\u51fa: h2ll4 w4rld<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6240\u6709\u7684\u5143\u97f3\u5b57\u6bcd\u88ab\u66ff\u6362\u4e3a\u5bf9\u5e94\u7684\u6570\u5b57\u3002<\/p>\n<\/p>\n
2\u3001\u4f7f\u7528\u6620\u5c04\u8868\u8fdb\u884c\u590d\u6742\u66ff\u6362<\/h3>\n<\/p>\n
str.maketrans()<\/code>\u8fd8\u53ef\u4ee5\u63a5\u53d7\u4e00\u4e2a\u5b57\u5178\u4f5c\u4e3a\u53c2\u6570\uff0c\u7528\u4e8e\u66f4\u590d\u6742\u7684\u66ff\u6362\uff1a<\/p>\n<\/p>\n
trantab = str.maketrans({'a': '4', 'e': '3', 'i': '1', 'o': '0', 'u': '(_)'} )<\/p>\n
text = "quick brown fox"<\/p>\n
new_text = text.translate(trantab)<\/p>\n
print(new_text)  # \u8f93\u51fa: q(_)1ck br0wn f0x<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u56db\u3001\u603b\u7ed3<\/p>\n<\/p>\n
\u5728Python\u4e2d\uff0c\u5b57\u7b26\u66ff\u6362\u662f\u4e00\u4e2a\u5e38\u89c1\u7684\u64cd\u4f5c\uff0c\u4e0d\u540c\u7684\u65b9\u6cd5\u9002\u7528\u4e8e\u4e0d\u540c\u7684\u573a\u666f\u3002replace()<\/code>\u65b9\u6cd5\u7b80\u5355\u76f4\u63a5\uff0c\u9002\u5408\u57fa\u672c\u7684\u5b57\u7b26\u4e32\u66ff\u6362\uff1bre.sub()<\/code>\u65b9\u6cd5\u529f\u80fd\u5f3a\u5927\uff0c\u9002\u5408\u590d\u6742\u7684\u6a21\u5f0f\u5339\u914d\u548c\u66ff\u6362\uff1bstr.maketrans()<\/code>\u548ctranslate()<\/code>\u65b9\u6cd5\u9002\u7528\u4e8e\u591a\u5b57\u7b26\u66ff\u6362\u6216\u7ffb\u8bd1\u3002<\/strong>\u6839\u636e\u5b9e\u9645\u9700\u6c42\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5\uff0c\u53ef\u4ee5\u63d0\u9ad8\u4ee3\u7801\u7684\u6548\u7387\u548c\u53ef\u8bfb\u6027\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u4f7f\u7528\u5b57\u7b26\u4e32\u7684replace()\u65b9\u6cd5\u8fdb\u884c\u5b57\u7b26\u66ff\u6362\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u5b57\u7b26\u4e32\u5bf9\u8c61\u7684replace()<\/code>\u65b9\u6cd5\u6765\u66ff\u6362\u5b57\u7b26\u6216\u5b50\u5b57\u7b26\u4e32\u3002\u8fd9\u4e2a\u65b9\u6cd5\u63a5\u53d7\u4e24\u4e2a\u53c2\u6570\uff0c\u7b2c\u4e00\u4e2a\u662f\u8981\u88ab\u66ff\u6362\u7684\u5b57\u7b26\u4e32\uff0c\u7b2c\u4e8c\u4e2a\u662f\u66ff\u6362\u6210\u7684\u5b57\u7b26\u4e32\u3002\u4f60\u8fd8\u53ef\u4ee5\u9009\u62e9\u7b2c\u4e09\u4e2a\u53c2\u6570\uff0c\u6307\u5b9a\u66ff\u6362\u7684\u6b21\u6570\u3002\u4f8b\u5982\uff1a  <\/p>\n
text = "Hello World"\nnew_text = text.replace("World", "Python")\nprint(new_text)  # \u8f93\u51fa: Hello Python\n<\/code><\/pre>\n
\u8fd9\u4e2a\u4f8b\u5b50\u5c55\u793a\u4e86\u5982\u4f55\u5c06\u201cWorld\u201d\u66ff\u6362\u4e3a\u201cPython\u201d\u3002<\/p>\n
\u6709\u6ca1\u6709\u5176\u4ed6\u65b9\u6cd5\u53ef\u4ee5\u8fdb\u884c\u5b57\u7b26\u66ff\u6362\uff1f<\/strong>
\u9664\u4e86replace()<\/code>\u65b9\u6cd5\uff0cPython\u8fd8\u63d0\u4f9b\u4e86\u5176\u4ed6\u4e00\u4e9b\u65b9\u5f0f\u8fdb\u884c\u5b57\u7b26\u66ff\u6362\u3002\u4f8b\u5982\uff0c\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u7684re<\/code>\u6a21\u5757\u53ef\u4ee5\u8fdb\u884c\u66f4\u590d\u6742\u7684\u66ff\u6362\u64cd\u4f5c\u3002\u901a\u8fc7re.sub()<\/code>\u51fd\u6570\uff0c\u4f60\u53ef\u4ee5\u4f7f\u7528\u6a21\u5f0f\u5339\u914d\u66ff\u6362\u5b57\u7b26\u3002\u4f8b\u5982\uff1a  <\/p>\n
import re\ntext = "Hello World"\nnew_text = re.sub(r"World", "Python", text)\nprint(new_text)  # \u8f93\u51fa: Hello Python\n<\/code><\/pre>\n
\u8fd9\u79cd\u65b9\u6cd5\u7279\u522b\u9002\u5408\u9700\u8981\u66f4\u590d\u6742\u5339\u914d\u7684\u60c5\u51b5\u3002<\/p>\n
\u5b57\u7b26\u66ff\u6362\u662f\u5426\u4f1a\u5f71\u54cd\u539f\u59cb\u5b57\u7b26\u4e32\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u5b57\u7b26\u4e32\u662f\u4e0d\u53ef\u53d8\u7684\uff0c\u8fd9\u610f\u5473\u7740\u5bf9\u5b57\u7b26\u4e32\u7684\u4efb\u4f55\u64cd\u4f5c\u90fd\u4f1a\u8fd4\u56de\u4e00\u4e2a\u65b0\u7684\u5b57\u7b26\u4e32\uff0c\u800c\u4e0d\u4f1a\u6539\u53d8\u539f\u59cb\u5b57\u7b26\u4e32\u3002\u56e0\u6b64\uff0c\u4f7f\u7528replace()<\/code>\u6216\u5176\u4ed6\u66ff\u6362\u65b9\u6cd5\u4e0d\u4f1a\u5f71\u54cd\u539f\u59cb\u5b57\u7b26\u4e32\u3002\u4f8b\u5982\uff1a  <\/p>\n
original_text = "Hello World"\nnew_text = original_text.replace("World", "Python")\nprint(original_text)  # \u8f93\u51fa: Hello World\nprint(new_text)       # \u8f93\u51fa: Hello Python\n<\/code><\/pre>\n
\u8fd9\u6837\u53ef\u4ee5\u786e\u4fdd\u4f60\u53ef\u4ee5\u4fdd\u7559\u539f\u59cb\u5b57\u7b26\u4e32\u4e0d\u53d8\uff0c\u540c\u65f6\u83b7\u53d6\u66ff\u6362\u540e\u7684\u7ed3\u679c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u8fdb\u884c\u5b57\u7b26\u66ff\u6362\u7684\u4e3b\u8981\u65b9\u6cd5\u6709\uff1a\u4f7f\u7528\u5b57\u7b26\u4e32\u7684replace()\u65b9\u6cd5\u3001\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u7684re.sub() […]","protected":false},"author":3,"featured_media":968330,"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\/968325"}],"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=968325"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/968325\/revisions"}],"predecessor-version":[{"id":968333,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/968325\/revisions\/968333"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/968330"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=968325"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=968325"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=968325"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}