{"id":1129072,"date":"2025-01-08T20:26:16","date_gmt":"2025-01-08T12:26:16","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1129072.html"},"modified":"2025-01-08T20:26:18","modified_gmt":"2025-01-08T12:26:18","slug":"python%e5%a6%82%e4%bd%95%e5%88%a0%e9%99%a4%e6%96%87%e6%9c%ac%e4%b8%ad%e7%9a%84%e6%9f%90%e4%b8%80%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1129072.html","title":{"rendered":"python\u5982\u4f55\u5220\u9664\u6587\u672c\u4e2d\u7684\u67d0\u4e00\u884c"},"content":{"rendered":"

\"python\u5982\u4f55\u5220\u9664\u6587\u672c\u4e2d\u7684\u67d0\u4e00\u884c\"<\/p>\n

\u5728Python\u4e2d\u5220\u9664\u6587\u672c\u4e2d\u7684\u67d0\u4e00\u884c\uff0c\u53ef\u4ee5\u4f7f\u7528\u6587\u4ef6\u8bfb\u5199\u64cd\u4f5c\u3001\u6b63\u5219\u8868\u8fbe\u5f0f\u7b49\u65b9\u6cd5<\/strong>\u3002\u5176\u4e2d\uff0c\u4f7f\u7528\u6587\u4ef6\u8bfb\u5199\u64cd\u4f5c\u662f\u6700\u5e38\u89c1\u4e14\u6709\u6548\u7684\u65b9\u6cd5<\/strong>\u3002\u4f60\u53ef\u4ee5\u901a\u8fc7\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff0c\u4fee\u6539\u540e\u518d\u5199\u56de\u6587\u4ef6\u7684\u65b9\u5f0f\u5b9e\u73b0\u3002\u4ee5\u4e0b\u662f\u8be6\u7ec6\u6b65\u9aa4\uff1a\u8bfb\u53d6\u6574\u4e2a\u6587\u4ef6\u5185\u5bb9\u3001\u5224\u65ad\u5e76\u5220\u9664\u7279\u5b9a\u884c\u3001\u5c06\u4fee\u6539\u540e\u7684\u5185\u5bb9\u5199\u56de\u6587\u4ef6<\/strong>\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9<\/h3>\n<\/p>\n

\u5728\u64cd\u4f5c\u6587\u672c\u6587\u4ef6\u65f6\uff0c\u9996\u5148\u9700\u8981\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\u3002Python\u63d0\u4f9b\u4e86\u591a\u79cd\u65b9\u6cd5\u6765\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff0c\u5982\u4f7f\u7528open<\/code>\u51fd\u6570\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n

with open('example.txt', 'r') as file:<\/p>\n
    lines = file.readlines()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0creadlines()<\/code>\u65b9\u6cd5\u4f1a\u5c06\u6587\u4ef6\u5185\u5bb9\u6309\u884c\u8bfb\u53d6\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u5305\u542b\u6bcf\u4e00\u884c\u7684\u5217\u8868\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u5224\u65ad\u5e76\u5220\u9664\u7279\u5b9a\u884c<\/h3>\n<\/p>\n
\u5728\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528\u5faa\u73af\u6216\u6761\u4ef6\u8bed\u53e5\u6765\u5224\u65ad\u5e76\u5220\u9664\u7279\u5b9a\u884c\u3002\u5047\u8bbe\u6211\u4eec\u60f3\u5220\u9664\u5305\u542b\u7279\u5b9a\u5b57\u7b26\u4e32\u7684\u884c\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n
string_to_delete = "delete this line"<\/p>\n
new_lines = []<\/p>\n
for line in lines:<\/p>\n
    if string_to_delete not in line:<\/p>\n
        new_lines.append(line)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u53ea\u6709\u4e0d\u5305\u542b\u7279\u5b9a\u5b57\u7b26\u4e32\u7684\u884c\u624d\u4f1a\u88ab\u6dfb\u52a0\u5230new_lines<\/code>\u5217\u8868\u4e2d\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u5c06\u4fee\u6539\u540e\u7684\u5185\u5bb9\u5199\u56de\u6587\u4ef6<\/h3>\n<\/p>\n
\u5728\u5220\u9664\u4e86\u7279\u5b9a\u884c\u4e4b\u540e\uff0c\u6211\u4eec\u9700\u8981\u5c06\u4fee\u6539\u540e\u7684\u5185\u5bb9\u5199\u56de\u5230\u6587\u4ef6\u4e2d\u3002\u53ef\u4ee5\u4f7f\u7528open<\/code>\u51fd\u6570\u4ee5\u5199\u6a21\u5f0f\u91cd\u65b0\u6253\u5f00\u6587\u4ef6\uff0c\u5e76\u4f7f\u7528writelines()<\/code>\u65b9\u6cd5\u5c06\u65b0\u7684\u5185\u5bb9\u5199\u5165\uff1a<\/p>\n<\/p>\n
with open('example.txt', 'w') as file:<\/p>\n
    file.writelines(new_lines)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u56db\u3001\u5b8c\u6574\u4ee3\u7801\u793a\u4f8b<\/h3>\n<\/p>\n
\u5c06\u4ee5\u4e0a\u6b65\u9aa4\u7ed3\u5408\u8d77\u6765\uff0c\u5f97\u5230\u5b8c\u6574\u7684\u4ee3\u7801\u793a\u4f8b\u5982\u4e0b\uff1a<\/p>\n<\/p>\n
def delete_line_from_file(file_path, string_to_delete):<\/p>\n
    with open(file_path, 'r') as file:<\/p>\n
        lines = file.readlines()<\/p>\n
    new_lines = [line for line in lines if string_to_delete not in line]<\/p>\n
    with open(file_path, 'w') as file:<\/p>\n
        file.writelines(new_lines)<\/p>\n
\u8c03\u7528\u51fd\u6570<\/strong><\/h2>\n
delete_line_from_file('example.txt', 'delete this line')<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e94\u3001\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f<\/h3>\n<\/p>\n
\u5982\u679c\u9700\u8981\u66f4\u590d\u6742\u7684\u5339\u914d\u6761\u4ef6\uff0c\u53ef\u4ee5\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u5220\u9664\u5305\u542b\u7279\u5b9a\u6a21\u5f0f\u7684\u884c\u7684\u4f8b\u5b50\uff1a<\/p>\n<\/p>\n
import re<\/p>\n
def delete_line_with_pattern(file_path, pattern):<\/p>\n
    with open(file_path, 'r') as file:<\/p>\n
        lines = file.readlines()<\/p>\n
    new_lines = [line for line in lines if not re.search(pattern, line)]<\/p>\n
    with open(file_path, 'w') as file:<\/p>\n
        file.writelines(new_lines)<\/p>\n
\u8c03\u7528\u51fd\u6570<\/strong><\/h2>\n
delete_line_with_pattern('example.txt', r'^delete.*line$')<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cre.search()<\/code>\u51fd\u6570\u7528\u4e8e\u5339\u914d\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f\uff0c\u53ea\u6709\u4e0d\u5339\u914d\u7684\u884c\u624d\u4f1a\u88ab\u4fdd\u7559\u3002<\/p>\n<\/p>\n
\u516d\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
\u5220\u9664\u6587\u672c\u4e2d\u7684\u67d0\u4e00\u884c\u5728Python\u4e2d\u4e3b\u8981\u901a\u8fc7\u4ee5\u4e0b\u6b65\u9aa4\u5b9e\u73b0\uff1a\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\u3001\u5224\u65ad\u5e76\u5220\u9664\u7279\u5b9a\u884c\u3001\u5c06\u4fee\u6539\u540e\u7684\u5185\u5bb9\u5199\u56de\u6587\u4ef6<\/strong>\u3002\u6839\u636e\u9700\u6c42\u7684\u4e0d\u540c\uff0c\u53ef\u4ee5\u4f7f\u7528\u7b80\u5355\u7684\u5b57\u7b26\u4e32\u5339\u914d\u6216\u6b63\u5219\u8868\u8fbe\u5f0f\u6765\u5224\u65ad\u9700\u8981\u5220\u9664\u7684\u884c\u3002\u65e0\u8bba\u662f\u54ea\u79cd\u65b9\u6cd5\uff0c\u90fd\u9700\u8981\u6ce8\u610f\u6587\u4ef6\u8bfb\u5199\u64cd\u4f5c\u4e2d\u7684\u7ec6\u8282\uff0c\u5982\u6b63\u786e\u5173\u95ed\u6587\u4ef6\u3001\u5904\u7406\u5f02\u5e38\u7b49\u3002<\/p>\n<\/p>\n
\u901a\u8fc7\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u4f60\u53ef\u4ee5\u7075\u6d3b\u5730\u5220\u9664\u6587\u672c\u6587\u4ef6\u4e2d\u7684\u4efb\u610f\u884c\uff0c\u4ece\u800c\u5b9e\u73b0\u5bf9\u6587\u4ef6\u5185\u5bb9\u7684\u7cbe\u786e\u63a7\u5236\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u5220\u9664\u7279\u5b9a\u884c\u7684\u6587\u672c\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u901a\u8fc7\u8bfb\u53d6\u6587\u4ef6\u7684\u6bcf\u4e00\u884c\uff0c\u5c06\u9700\u8981\u4fdd\u7559\u7684\u884c\u5199\u5165\u4e00\u4e2a\u65b0\u6587\u4ef6\uff0c\u4ece\u800c\u5b9e\u73b0\u5220\u9664\u7279\u5b9a\u884c\u7684\u76ee\u7684\u3002\u4e5f\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\u64cd\u4f5c\uff0c\u5c06\u4e0d\u9700\u8981\u7684\u884c\u4ece\u5217\u8868\u4e2d\u79fb\u9664\u540e\u518d\u5199\u56de\u6587\u4ef6\u3002\u5177\u4f53\u65b9\u6cd5\u5305\u62ec\u4f7f\u7528with open()<\/code>\u8bed\u53e5\u6765\u8bfb\u53d6\u548c\u5199\u5165\u6587\u4ef6\uff0c\u4ee5\u53ca\u5229\u7528enumerate()<\/code>\u51fd\u6570\u6765\u5b9a\u4f4d\u9700\u8981\u5220\u9664\u7684\u884c\u3002<\/p>\n
\u4f7f\u7528Python\u5220\u9664\u6587\u672c\u6587\u4ef6\u4e2d\u7684\u7a7a\u884c\u6709\u4ec0\u4e48\u65b9\u6cd5\uff1f<\/strong>
\u5904\u7406\u6587\u672c\u6587\u4ef6\u65f6\uff0c\u5220\u9664\u7a7a\u884c\u901a\u5e38\u9700\u8981\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\u5e76\u68c0\u67e5\u6bcf\u4e00\u884c\u662f\u5426\u4e3a\u7a7a\u3002\u53ef\u4ee5\u901a\u8fc7\u6761\u4ef6\u5224\u65ad\u6765\u7b5b\u9009\u51fa\u975e\u7a7a\u884c\uff0c\u5e76\u5c06\u8fd9\u4e9b\u884c\u5199\u5165\u65b0\u7684\u6587\u4ef6\u4e2d\u3002\u4f7f\u7528\u5217\u8868\u63a8\u5bfc\u5f0f\u548cjoin()<\/code>\u51fd\u6570\u53ef\u4ee5\u7b80\u5316\u8fd9\u4e00\u8fc7\u7a0b\uff0c\u4f7f\u4ee3\u7801\u66f4\u52a0\u7b80\u6d01\u6613\u8bfb\u3002<\/p>\n
\u5728Python\u4e2d\u5220\u9664\u6587\u672c\u884c\u4f1a\u5f71\u54cd\u6587\u4ef6\u7684\u539f\u59cb\u5185\u5bb9\u5417\uff1f<\/strong>
\u76f4\u63a5\u5220\u9664\u884c\u7684\u64cd\u4f5c\u4e0d\u4f1a\u5728\u539f\u6587\u4ef6\u4e2d\u8fdb\u884c\u66f4\u6539\uff0c\u9664\u975e\u4f60\u9009\u62e9\u8986\u76d6\u539f\u6587\u4ef6\u3002\u901a\u5e38\uff0c\u5efa\u8bae\u5728\u5904\u7406\u6587\u4ef6\u65f6\u521b\u5efa\u4e00\u4e2a\u65b0\u6587\u4ef6\u4ee5\u4fdd\u7559\u539f\u59cb\u6570\u636e\u7684\u5b8c\u6574\u6027\u3002\u5982\u679c\u786e\u8ba4\u4e0d\u518d\u9700\u8981\u539f\u6587\u4ef6\uff0c\u53ef\u4ee5\u5728\u5904\u7406\u5b8c\u6210\u540e\u9009\u62e9\u5220\u9664\u539f\u6587\u4ef6\uff0c\u6216\u8005\u5728\u5199\u5165\u65b0\u6587\u4ef6\u540e\u7528\u65b0\u6587\u4ef6\u66ff\u6362\u539f\u6587\u4ef6\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u5220\u9664\u6587\u672c\u4e2d\u7684\u67d0\u4e00\u884c\uff0c\u53ef\u4ee5\u4f7f\u7528\u6587\u4ef6\u8bfb\u5199\u64cd\u4f5c\u3001\u6b63\u5219\u8868\u8fbe\u5f0f\u7b49\u65b9\u6cd5\u3002\u5176\u4e2d\uff0c\u4f7f\u7528\u6587\u4ef6\u8bfb\u5199\u64cd\u4f5c\u662f\u6700\u5e38\u89c1\u4e14\u6709 […]","protected":false},"author":3,"featured_media":1129080,"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\/1129072"}],"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=1129072"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1129072\/revisions"}],"predecessor-version":[{"id":1129083,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1129072\/revisions\/1129083"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1129080"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1129072"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1129072"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1129072"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}