{"id":1116206,"date":"2025-01-08T18:14:20","date_gmt":"2025-01-08T10:14:20","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1116206.html"},"modified":"2025-01-08T18:14:22","modified_gmt":"2025-01-08T10:14:22","slug":"python%e5%a6%82%e4%bd%95%e5%88%a0%e9%99%a4%e6%9f%90%e4%b8%80%e8%a1%8c%e7%9a%84%e5%80%bc","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1116206.html","title":{"rendered":"python\u5982\u4f55\u5220\u9664\u67d0\u4e00\u884c\u7684\u503c"},"content":{"rendered":"

\"python\u5982\u4f55\u5220\u9664\u67d0\u4e00\u884c\u7684\u503c\"<\/p>\n

\u5728Python\u4e2d\u5220\u9664\u67d0\u4e00\u884c\u7684\u503c\u6709\u591a\u79cd\u65b9\u6cd5\uff0c\u5305\u62ec\u4f7f\u7528\u5217\u8868\u64cd\u4f5c\u3001\u6587\u4ef6\u64cd\u4f5c\u548cPandas\u5e93\u7b49\u3002<\/strong> \u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u4e3b\u8981\u4ecb\u7ecd\u51e0\u79cd\u5e38\u7528\u65b9\u6cd5\uff0c\u5e76\u5bf9\u5176\u4e2d\u4e00\u79cd\u65b9\u6cd5\u8fdb\u884c\u8be6\u7ec6\u63cf\u8ff0\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528\u5217\u8868\u64cd\u4f5c<\/h3>\n<\/p>\n

\u5982\u679c\u4f60\u6709\u4e00\u4e2a\u5217\u8868\uff0c\u60f3\u8981\u5220\u9664\u5176\u4e2d\u67d0\u4e00\u884c\u7684\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528\u5217\u8868\u7684\u5185\u7f6e\u65b9\u6cd5del<\/code>\u6216remove<\/code>\u3002\u4f8b\u5982\uff1a<\/p>\n<\/p>\n

my_list = ['a', 'b', 'c', 'd']<\/p>\n
del my_list[1]  # \u5220\u9664\u5217\u8868\u4e2d\u7b2c\u4e8c\u4e2a\u5143\u7d20<\/p>\n
print(my_list)  # \u8f93\u51fa\uff1a['a', 'c', 'd']<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528\u6587\u4ef6\u64cd\u4f5c<\/h3>\n<\/p>\n
\u5982\u679c\u4f60\u9700\u8981\u4ece\u6587\u4ef6\u4e2d\u5220\u9664\u67d0\u4e00\u884c\u7684\u503c\uff0c\u53ef\u4ee5\u4f7f\u7528\u6587\u4ef6\u64cd\u4f5c\u6765\u5b9e\u73b0\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u8be6\u7ec6\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
with open('example.txt', 'r') as file:<\/p>\n
    lines = file.readlines()<\/p>\n
\u5047\u8bbe\u6211\u4eec\u8981\u5220\u9664\u7b2c\u4e8c\u884c<\/strong><\/h2>\n
line_to_delete = 1<\/p>\n
with open('example.txt', 'w') as file:<\/p>\n
    for i, line in enumerate(lines):<\/p>\n
        if i != line_to_delete:<\/p>\n
            file.write(line)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528Pandas\u5e93<\/h3>\n<\/p>\n
Pandas\u5e93\u662f\u5904\u7406\u6570\u636e\u7684\u5f3a\u5927\u5de5\u5177\uff0c\u5c24\u5176\u9002\u5408\u5904\u7406\u8868\u683c\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u4f7f\u7528Pandas\u5220\u9664\u67d0\u4e00\u884c\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
import pandas as pd<\/p>\n
\u8bfb\u53d6CSV\u6587\u4ef6\u5230DataFrame<\/strong><\/h2>\n
df = pd.read_csv('data.csv')<\/p>\n
\u5220\u9664\u7d22\u5f15\u4e3a2\u7684\u884c<\/strong><\/h2>\n
df = df.drop(2)<\/p>\n
\u5c06\u4fee\u6539\u540e\u7684DataFrame\u5199\u56deCSV\u6587\u4ef6<\/strong><\/h2>\n
df.to_csv('data.csv', index=False)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8be6\u7ec6\u63cf\u8ff0\uff1a\u4f7f\u7528\u6587\u4ef6\u64cd\u4f5c\u5220\u9664\u67d0\u4e00\u884c\u7684\u503c<\/h3>\n<\/p>\n
\u5728\u6587\u4ef6\u64cd\u4f5c\u4e2d\uff0c\u6211\u4eec\u901a\u5e38\u4f1a\u5148\u8bfb\u53d6\u6574\u4e2a\u6587\u4ef6\u7684\u5185\u5bb9\uff0c\u7136\u540e\u6839\u636e\u9700\u8981\u5220\u9664\u67d0\u4e00\u884c\uff0c\u6700\u540e\u5c06\u4fee\u6539\u540e\u7684\u5185\u5bb9\u91cd\u65b0\u5199\u56de\u6587\u4ef6\u3002\u8fd9\u79cd\u65b9\u6cd5\u9002\u7528\u4e8e\u4efb\u4f55\u7c7b\u578b\u7684\u6587\u672c\u6587\u4ef6\uff0c\u5982.txt<\/code>, .csv<\/code>\u7b49\u3002<\/p>\n<\/p>\n
\u6b65\u9aa4\u4e00\uff1a\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9<\/h4>\n<\/p>\n
\u9996\u5148\uff0c\u4f7f\u7528open()<\/code>\u51fd\u6570\u4ee5\u8bfb\u53d6\u6a21\u5f0f\u6253\u5f00\u6587\u4ef6\uff0c\u4f7f\u7528readlines()<\/code>\u65b9\u6cd5\u5c06\u6587\u4ef6\u5185\u5bb9\u8bfb\u53d6\u5230\u4e00\u4e2a\u5217\u8868\u4e2d\u3002\u6bcf\u4e2a\u5217\u8868\u5143\u7d20\u5bf9\u5e94\u6587\u4ef6\u4e2d\u7684\u4e00\u884c\u3002<\/p>\n<\/p>\n
with open('example.txt', 'r') as file:<\/p>\n
    lines = file.readlines()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u6b65\u9aa4\u4e8c\uff1a\u5220\u9664\u6307\u5b9a\u884c<\/h4>\n<\/p>\n
\u63a5\u4e0b\u6765\uff0c\u6211\u4eec\u9700\u8981\u786e\u5b9a\u8981\u5220\u9664\u7684\u884c\u7684\u7d22\u5f15\uff0c\u5e76\u4ece\u5217\u8868\u4e2d\u5220\u9664\u8be5\u884c\u3002\u5047\u8bbe\u8981\u5220\u9664\u7684\u884c\u7d22\u5f15\u4e3aline_to_delete<\/code>\u3002<\/p>\n<\/p>\n
line_to_delete = 1  # \u5047\u8bbe\u8981\u5220\u9664\u7b2c\u4e8c\u884c<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u6b65\u9aa4\u4e09\uff1a\u91cd\u65b0\u5199\u56de\u6587\u4ef6<\/h4>\n<\/p>\n
\u6700\u540e\uff0c\u4ee5\u5199\u5165\u6a21\u5f0f\u6253\u5f00\u6587\u4ef6\uff0c\u4f7f\u7528\u5faa\u73af\u904d\u5386\u5217\u8868\uff0c\u5c06\u4e0d\u9700\u8981\u5220\u9664\u7684\u884c\u5199\u56de\u6587\u4ef6\u3002<\/p>\n<\/p>\n
with open('example.txt', 'w') as file:<\/p>\n
    for i, line in enumerate(lines):<\/p>\n
        if i != line_to_delete:<\/p>\n
            file.write(line)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u64cd\u4f5c\u7b80\u5355\uff0c\u9002\u7528\u4e8e\u6587\u4ef6\u884c\u6570\u4e0d\u591a\u7684\u60c5\u51b5\u3002\u5982\u679c\u6587\u4ef6\u5185\u5bb9\u8f83\u5927\uff0c\u9891\u7e41\u7684\u8bfb\u5199\u64cd\u4f5c\u53ef\u80fd\u4f1a\u5f71\u54cd\u6027\u80fd\u3002<\/p>\n<\/p>\n
\u56db\u3001Pandas\u5e93\u64cd\u4f5c\u8be6\u89e3<\/h3>\n<\/p>\n
Pandas\u5e93\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u65b9\u6cd5\u6765\u5904\u7406\u8868\u683c\u6570\u636e\uff0c\u7279\u522b\u9002\u5408\u5904\u7406CSV\u6587\u4ef6\u3002\u4e0b\u9762\u662f\u8be6\u7ec6\u6b65\u9aa4\uff1a<\/p>\n<\/p>\n
\u6b65\u9aa4\u4e00\uff1a\u8bfb\u53d6CSV\u6587\u4ef6<\/h4>\n<\/p>\n
\u9996\u5148\uff0c\u4f7f\u7528pandas.read_csv()<\/code>\u65b9\u6cd5\u8bfb\u53d6CSV\u6587\u4ef6\u3002<\/p>\n<\/p>\n
import pandas as pd<\/p>\n
df = pd.read_csv('data.csv')<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u6b65\u9aa4\u4e8c\uff1a\u5220\u9664\u6307\u5b9a\u884c<\/h4>\n<\/p>\n
\u4f7f\u7528drop()<\/code>\u65b9\u6cd5\u5220\u9664\u6307\u5b9a\u884c\uff0c\u53ef\u4ee5\u901a\u8fc7\u884c\u7684\u7d22\u5f15\u6216\u6761\u4ef6\u5220\u9664\u3002<\/p>\n<\/p>\n
df = df.drop(2)  # \u5220\u9664\u7d22\u5f15\u4e3a2\u7684\u884c<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u6b65\u9aa4\u4e09\uff1a\u5199\u56deCSV\u6587\u4ef6<\/h4>\n<\/p>\n
\u6700\u540e\uff0c\u5c06\u4fee\u6539\u540e\u7684DataFrame\u5199\u56deCSV\u6587\u4ef6\u3002<\/p>\n<\/p>\n
df.to_csv('data.csv', index=False)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u8fd9\u79cd\u65b9\u6cd5\u64cd\u4f5c\u7b80\u4fbf\uff0c\u975e\u5e38\u9002\u5408\u5904\u7406\u5927\u89c4\u6a21\u6570\u636e\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u603b\u7ed3<\/h3>\n<\/p>\n
\u5220\u9664\u67d0\u4e00\u884c\u7684\u503c\u53ef\u4ee5\u901a\u8fc7\u591a\u79cd\u65b9\u6cd5\u5b9e\u73b0\uff0c\u5305\u62ec\u5217\u8868\u64cd\u4f5c\u3001\u6587\u4ef6\u64cd\u4f5c\u548cPandas\u5e93\u7b49\u3002<\/strong> \u6839\u636e\u5177\u4f53\u60c5\u51b5\u9009\u62e9\u9002\u5408\u7684\u65b9\u6cd5\u53ef\u4ee5\u63d0\u9ad8\u6548\u7387\u548c\u64cd\u4f5c\u7684\u7b80\u4fbf\u6027\u3002\u6587\u4ef6\u64cd\u4f5c\u65b9\u6cd5\u9002\u7528\u4e8e\u6587\u672c\u6587\u4ef6\u7684\u884c\u5220\u9664\uff0cPandas\u5e93\u65b9\u6cd5\u5219\u9002\u5408\u5904\u7406\u7ed3\u6784\u5316\u6570\u636e\u5982CSV\u6587\u4ef6\u3002\u4e86\u89e3\u5e76\u638c\u63e1\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u53ef\u4ee5\u66f4\u7075\u6d3b\u5730\u5904\u7406\u6570\u636e\u5220\u9664\u64cd\u4f5c\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u5220\u9664\u5217\u8868\u4e2d\u7684\u67d0\u4e00\u884c\u503c\uff1f<\/strong>
\u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528del<\/code>\u8bed\u53e5\u6216\u8005remove()<\/code>\u65b9\u6cd5\u6765\u5220\u9664\u5217\u8868\u4e2d\u7684\u67d0\u4e00\u884c\u503c\u3002\u5982\u679c\u4f60\u6709\u4e00\u4e2a\u4e8c\u7ef4\u5217\u8868\uff08\u5217\u8868\u7684\u5217\u8868\uff09\uff0c\u53ef\u4ee5\u901a\u8fc7\u7d22\u5f15\u6765\u5b9a\u4f4d\u5230\u5177\u4f53\u7684\u884c\uff0c\u7136\u540e\u8fdb\u884c\u5220\u9664\u3002\u4f8b\u5982\uff0c\u4f7f\u7528del my_list[index]<\/code>\u53ef\u4ee5\u5220\u9664\u5bf9\u5e94\u7d22\u5f15\u7684\u884c\uff0c\u800c\u4f7f\u7528my_list.remove(value)<\/code>\u53ef\u4ee5\u5220\u9664\u67d0\u4e2a\u5177\u4f53\u503c\u6240\u5728\u7684\u884c\u3002<\/p>\n
\u5728Pandas\u4e2d\u5982\u4f55\u5220\u9664DataFrame\u4e2d\u7684\u67d0\u4e00\u884c\uff1f<\/strong>
\u5982\u679c\u4f60\u4f7f\u7528Pandas\u5e93\u5904\u7406\u6570\u636e\uff0c\u53ef\u4ee5\u5229\u7528drop()<\/code>\u65b9\u6cd5\u6765\u5220\u9664DataFrame\u4e2d\u7684\u67d0\u4e00\u884c\u3002\u53ef\u4ee5\u901a\u8fc7\u884c\u7d22\u5f15\u6216\u6761\u4ef6\u6765\u9009\u62e9\u8981\u5220\u9664\u7684\u884c\u3002\u4f8b\u5982\uff0cdf.drop(index)<\/code>\u53ef\u4ee5\u6839\u636e\u884c\u7d22\u5f15\u5220\u9664\uff0c\u800cdf.drop(df[df['column_name'] == value].index)<\/code>\u53ef\u4ee5\u6839\u636e\u7279\u5b9a\u6761\u4ef6\u5220\u9664\u884c\u3002<\/p>\n
\u5220\u9664\u6587\u4ef6\u4e2d\u7279\u5b9a\u884c\u7684\u503c\u5728Python\u4e2d\u5982\u4f55\u5b9e\u73b0\uff1f<\/strong>
\u5982\u679c\u4f60\u60f3\u5220\u9664\u6587\u672c\u6587\u4ef6\u4e2d\u7684\u7279\u5b9a\u884c\uff0c\u53ef\u4ee5\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\u5230\u4e00\u4e2a\u5217\u8868\u4e2d\uff0c\u5220\u9664\u6240\u9700\u884c\u540e\uff0c\u518d\u5c06\u5217\u8868\u5199\u56de\u6587\u4ef6\u3002\u53ef\u4ee5\u4f7f\u7528with open('filename.txt', 'r') as file:<\/code>\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff0c\u5c06\u5176\u5b58\u50a8\u5728\u4e00\u4e2a\u5217\u8868\u4e2d\uff0c\u7136\u540e\u8fdb\u884c\u884c\u5220\u9664\uff0c\u6700\u540e\u518d\u5199\u5165\u6587\u4ef6\u4e2d\u3002\u4f8b\u5982\uff0clines.remove('line to be removed\\n')<\/code>\u53ef\u4ee5\u5220\u9664\u7279\u5b9a\u884c\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"\u5728Python\u4e2d\u5220\u9664\u67d0\u4e00\u884c\u7684\u503c\u6709\u591a\u79cd\u65b9\u6cd5\uff0c\u5305\u62ec\u4f7f\u7528\u5217\u8868\u64cd\u4f5c\u3001\u6587\u4ef6\u64cd\u4f5c\u548cPandas\u5e93\u7b49\u3002 \u5728\u8fd9\u91cc\uff0c\u6211\u4eec\u4e3b\u8981\u4ecb\u7ecd […]","protected":false},"author":3,"featured_media":1116212,"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\/1116206"}],"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=1116206"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1116206\/revisions"}],"predecessor-version":[{"id":1116213,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1116206\/revisions\/1116213"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1116212"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1116206"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1116206"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1116206"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}