{"id":912,"date":"2025-01-12T10:10:18","date_gmt":"2025-01-12T02:10:18","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=912"},"modified":"2025-01-12T10:10:18","modified_gmt":"2025-01-12T02:10:18","slug":"%e5%a6%82%e4%bd%95%e7%94%a8python%e8%87%aa%e5%8a%a8%e5%8c%96%e6%96%87%e4%bb%b6%e5%a4%84%e7%90%86%ef%bc%9a%e5%ae%9e%e7%94%a8%e8%84%9a%e6%9c%ac%e4%b8%8e%e6%8a%80%e5%b7%a7","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/01\/12\/%e5%a6%82%e4%bd%95%e7%94%a8python%e8%87%aa%e5%8a%a8%e5%8c%96%e6%96%87%e4%bb%b6%e5%a4%84%e7%90%86%ef%bc%9a%e5%ae%9e%e7%94%a8%e8%84%9a%e6%9c%ac%e4%b8%8e%e6%8a%80%e5%b7%a7\/","title":{"rendered":"\u5982\u4f55\u7528Python\u81ea\u52a8\u5316\u6587\u4ef6\u5904\u7406\uff1a\u5b9e\u7528\u811a\u672c\u4e0e\u6280\u5de7"},"content":{"rendered":"\n
\n

Python \u662f\u4e00\u95e8\u975e\u5e38\u9002\u5408\u6587\u4ef6\u5904\u7406\u7684\u7f16\u7a0b\u8bed\u8a00\uff0c\u5b83\u62e5\u6709\u5f3a\u5927\u7684\u6807\u51c6\u5e93\u548c\u7b2c\u4e09\u65b9\u5e93\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u9ad8\u6548\u5730\u8fdb\u884c\u6587\u4ef6\u8bfb\u5199\u3001\u8f6c\u6362\u3001\u641c\u7d22\u3001\u6279\u91cf\u5904\u7406\u7b49\u4efb\u52a1\u3002\u672c\u6587\u5c06\u4ecb\u7ecd\u5982\u4f55\u4f7f\u7528 Python \u81ea\u52a8\u5316\u6587\u4ef6\u5904\u7406\uff0c\u63d0\u4f9b\u4e00\u4e9b\u5e38\u89c1\u7684\u6587\u4ef6\u64cd\u4f5c\u811a\u672c\u548c\u6280\u5de7\u3002<\/p>\n<\/blockquote>\n\n\n\n

\u4e00\u3001Python\u8fdb\u884c\u6587\u4ef6\u5904\u7406\u7684\u57fa\u672c\u64cd\u4f5c<\/h3>\n\n\n\n

\u5728 Python \u4e2d\uff0c\u6587\u4ef6\u5904\u7406\u4e3b\u8981\u4f9d\u8d56\u5185\u7f6e\u7684 os<\/code>\u3001shutil<\/code>\u3001pathlib<\/code>\u3001glob<\/code> \u7b49\u6a21\u5757\u4ee5\u53ca open()<\/code> \u51fd\u6570\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u57fa\u672c\u7684\u6587\u4ef6\u64cd\u4f5c\u793a\u4f8b\u3002<\/p>\n\n\n\n

1. \u6253\u5f00\u548c\u5173\u95ed\u6587\u4ef6<\/strong><\/h4>\n\n\n\n

\u901a\u8fc7 open()<\/code> \u51fd\u6570\u53ef\u4ee5\u6253\u5f00\u6587\u4ef6\uff0c\u9ed8\u8ba4\u662f\u4ee5\u6587\u672c\u6a21\u5f0f\u6253\u5f00\uff0c\u4e5f\u53ef\u4ee5\u6307\u5b9a\u5176\u4ed6\u6a21\u5f0f\u5982\u4e8c\u8fdb\u5236\u6a21\u5f0f\u3001\u8ffd\u52a0\u6a21\u5f0f\u7b49\u3002<\/p>\n\n\n\n

# \u4ee5\u8bfb\u6a21\u5f0f\u6253\u5f00\u6587\u4ef6\nfile = open('example.txt', 'r')\n\n# \u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\ncontent = file.read()\nprint(content)\n\n# \u5173\u95ed\u6587\u4ef6\nfile.close()<\/code><\/pre>\n\n\n\n
\u63a8\u8350\u4f7f\u7528 with<\/code> \u8bed\u53e5\u6765\u7ba1\u7406\u6587\u4ef6\u8d44\u6e90\uff0c\u5b83\u4f1a\u81ea\u52a8\u5904\u7406\u6587\u4ef6\u7684\u6253\u5f00\u548c\u5173\u95ed\uff0c\u907f\u514d\u5fd8\u8bb0\u5173\u95ed\u6587\u4ef6\u5bfc\u81f4\u8d44\u6e90\u6cc4\u6f0f\uff1a<\/p>\n\n\n\n
with open('example.txt', 'r') as file:\n    content = file.read()\n    print(content)<\/code><\/pre>\n\n\n\n
2. \u5199\u5165\u6587\u4ef6<\/strong><\/h4>\n\n\n\n
open()<\/code> \u51fd\u6570\u4e5f\u53ef\u4ee5\u7528\u6765\u5199\u5165\u6587\u4ef6\uff0c\u901a\u8fc7\u6307\u5b9a\u5199\u5165\u6a21\u5f0f\uff08'w'<\/code>\uff1a\u5199\u5165\u6a21\u5f0f\uff0c'a'<\/code>\uff1a\u8ffd\u52a0\u6a21\u5f0f\uff09\u6765\u6253\u5f00\u6587\u4ef6\u3002<\/p>\n\n\n\n
# \u5199\u5165\u6587\u4ef6\uff08\u4f1a\u8986\u76d6\u539f\u5185\u5bb9\uff09\nwith open('output.txt', 'w') as file:\n    file.write('Hello, World!\\n')\n\n# \u8ffd\u52a0\u5199\u5165\u6587\u4ef6\uff08\u4e0d\u4f1a\u8986\u76d6\u539f\u5185\u5bb9\uff09\nwith open('output.txt', 'a') as file:\n    file.write('Appending some text.\\n')<\/code><\/pre>\n\n\n\n
3. \u8bfb\u53d6\u6587\u4ef6\u7684\u6bcf\u4e00\u884c<\/strong><\/h4>\n\n\n\n
with open('example.txt', 'r') as file:\n    for line in file:\n        print(line.strip())  # \u53bb\u6389\u884c\u672b\u7684\u6362\u884c\u7b26<\/code><\/pre>\n\n\n\n
4. \u8bfb\u53d6\u6587\u4ef6\u5e76\u8f6c\u4e3a\u5217\u8868<\/strong><\/h4>\n\n\n\n
with open('example.txt', 'r') as file:\n    lines = file.readlines()  # \u8fd4\u56de\u6587\u4ef6\u4e2d\u6bcf\u4e00\u884c\u7684\u5217\u8868\nprint(lines)<\/code><\/pre>\n\n\n\n
\u4e8c\u3001\u4f7f\u7528os<\/code>\u548cpathlib<\/code>\u6a21\u5757\u8fdb\u884c\u6587\u4ef6\u548c\u76ee\u5f55\u7ba1\u7406<\/h3>\n\n\n\n
1. \u521b\u5efa\u6587\u4ef6\u548c\u76ee\u5f55<\/strong><\/h4>\n\n\n\n
\u4f7f\u7528 os<\/code> \u6a21\u5757\u53ef\u4ee5\u521b\u5efa\u6587\u4ef6\u548c\u76ee\u5f55\uff1a<\/p>\n\n\n\n
import os\n\n# \u521b\u5efa\u76ee\u5f55\nos.makedirs('new_folder', exist_ok=True)\n\n# \u521b\u5efa\u7a7a\u6587\u4ef6\nwith open('new_folder\/example.txt', 'w') as file:\n    file.write('This is a new file.')<\/code><\/pre>\n\n\n\n
pathlib<\/code> \u4e5f\u662f\u4e00\u4e2a\u975e\u5e38\u73b0\u4ee3\u548c\u9ad8\u6548\u7684\u6587\u4ef6\u8def\u5f84\u64cd\u4f5c\u5e93\uff0c\u4e0b\u9762\u662f\u4f7f\u7528 pathlib<\/code> \u521b\u5efa\u76ee\u5f55\u7684\u4f8b\u5b50\uff1a<\/p>\n\n\n\n
from pathlib import Path\n\n# \u521b\u5efa\u76ee\u5f55\nPath('new_folder').mkdir(parents=True, exist_ok=True)\n\n# \u521b\u5efa\u7a7a\u6587\u4ef6\nfile_path = Path('new_folder\/example.txt')\nfile_path.write_text('This is a new file created using pathlib.')<\/code><\/pre>\n\n\n\n
2. \u5220\u9664\u6587\u4ef6\u548c\u76ee\u5f55<\/strong><\/h4>\n\n\n\n
\u5220\u9664\u6587\u4ef6\u4f7f\u7528 os.remove()<\/code>\uff0c\u5220\u9664\u76ee\u5f55\u4f7f\u7528 os.rmdir()<\/code> \u6216 shutil.rmtree()<\/code>\uff08\u9012\u5f52\u5220\u9664\u76ee\u5f55\u53ca\u5176\u5185\u5bb9\uff09\u3002<\/p>\n\n\n\n
import os\n\n# \u5220\u9664\u6587\u4ef6\nos.remove('new_folder\/example.txt')\n\n# \u5220\u9664\u7a7a\u76ee\u5f55\nos.rmdir('new_folder')\n\n# \u5220\u9664\u975e\u7a7a\u76ee\u5f55\nimport shutil\nshutil.rmtree('new_folder')<\/code><\/pre>\n\n\n\n
3. \u68c0\u67e5\u6587\u4ef6\u6216\u76ee\u5f55\u662f\u5426\u5b58\u5728<\/strong><\/h4>\n\n\n\n
import os\n\n# \u68c0\u67e5\u6587\u4ef6\u662f\u5426\u5b58\u5728\nif os.path.exists('example.txt'):\n    print(\"File exists.\")\nelse:\n    print(\"File does not exist.\")\n\n# \u68c0\u67e5\u76ee\u5f55\u662f\u5426\u5b58\u5728\nif os.path.isdir('new_folder'):\n    print(\"Directory exists.\")<\/code><\/pre>\n\n\n\n
\u4f7f\u7528 pathlib<\/code> \u4e5f\u53ef\u4ee5\u8fdb\u884c\u7c7b\u4f3c\u64cd\u4f5c\uff1a<\/p>\n\n\n\n
from pathlib import Path\n\nfile_path = Path('example.txt')\nif file_path.exists():\n    print(\"File exists.\")\nelse:\n    print(\"File does not exist.\")<\/code><\/pre>\n\n\n\n
\u4e09\u3001\u6279\u91cf\u5904\u7406\u6587\u4ef6\uff1a\u904d\u5386\u6587\u4ef6\u5939\u548c\u6587\u4ef6\u64cd\u4f5c<\/h3>\n\n\n\n
1. \u5217\u51fa\u76ee\u5f55\u4e2d\u7684\u6240\u6709\u6587\u4ef6<\/strong><\/h4>\n\n\n\n
import os\n\nfor filename in os.listdir('path_to_directory'):\n    if filename.endswith('.txt'):\n        print(filename)<\/code><\/pre>\n\n\n\n
\u4f7f\u7528 pathlib<\/code> \u4e5f\u53ef\u4ee5\u5b9e\u73b0\u7c7b\u4f3c\u529f\u80fd\uff1a<\/p>\n\n\n\n
from pathlib import Path\n\nfor file in Path('path_to_directory').glob('*.txt'):\n    print(file.name)<\/code><\/pre>\n\n\n\n
2. \u904d\u5386\u6240\u6709\u5b50\u76ee\u5f55\u548c\u6587\u4ef6<\/strong><\/h4>\n\n\n\n
\u4f7f\u7528 os.walk()<\/code> \u6765\u9012\u5f52\u904d\u5386\u6240\u6709\u5b50\u76ee\u5f55\u548c\u6587\u4ef6\uff1a<\/p>\n\n\n\n
import os\n\nfor dirpath, dirnames, filenames in os.walk('path_to_directory'):\n    print(f\"Directory: {dirpath}\")\n    for filename in filenames:\n        print(f\"    {filename}\")<\/code><\/pre>\n\n\n\n
\u4f7f\u7528 pathlib<\/code> \u4e2d\u7684 rglob()<\/code> \u65b9\u6cd5\u4e5f\u80fd\u904d\u5386\u6240\u6709\u5b50\u76ee\u5f55\uff1a<\/p>\n\n\n\n
from pathlib import Path\n\nfor file in Path('path_to_directory').rglob('*.txt'):\n    print(file.name)<\/code><\/pre>\n\n\n\n
3. \u6279\u91cf\u91cd\u547d\u540d\u6587\u4ef6<\/strong><\/h4>\n\n\n\n
import os\n\nfor filename in os.listdir('path_to_directory'):\n    if filename.endswith('.txt'):\n        old_path = os.path.join('path_to_directory', filename)\n        new_path = os.path.join('path_to_directory', f'new_{filename}')\n        os.rename(old_path, new_path)<\/code><\/pre>\n\n\n\n
4. \u6279\u91cf\u590d\u5236\u6587\u4ef6<\/strong><\/h4>\n\n\n\n
import shutil\nimport os\n\nsrc_dir = 'path_to_directory'\ndst_dir = 'path_to_backup_directory'\n\n# \u786e\u4fdd\u76ee\u6807\u76ee\u5f55\u5b58\u5728\nos.makedirs(dst_dir, exist_ok=True)\n\nfor filename in os.listdir(src_dir):\n    if filename.endswith('.txt'):\n        src = os.path.join(src_dir, filename)\n        dst = os.path.join(dst_dir, filename)\n        shutil.copy(src, dst)<\/code><\/pre>\n\n\n\n
5. \u6279\u91cf\u5220\u9664\u6587\u4ef6<\/strong><\/h4>\n\n\n\n
import os\n\nfor filename in os.listdir('path_to_directory'):\n    if filename.endswith('.log'):\n        os.remove(os.path.join('path_to_directory', filename))<\/code><\/pre>\n\n\n\n
\u56db\u3001\u6587\u4ef6\u5185\u5bb9\u64cd\u4f5c\uff1a\u67e5\u627e\u548c\u66ff\u6362<\/h3>\n\n\n\n
1. \u67e5\u627e\u6587\u4ef6\u4e2d\u7684\u67d0\u4e2a\u5185\u5bb9<\/strong><\/h4>\n\n\n\n
with open('example.txt', 'r') as file:\n    lines = file.readlines()\n\nfor line in lines:\n    if 'search_term' in line:\n        print(line)<\/code><\/pre>\n\n\n\n
2. \u66ff\u6362\u6587\u4ef6\u4e2d\u7684\u5185\u5bb9<\/strong><\/h4>\n\n\n\n
with open('example.txt', 'r') as file:\n    content = file.read()\n\ncontent = content.replace('old_text', 'new_text')\n\nwith open('example.txt', 'w') as file:\n    file.write(content)<\/code><\/pre>\n\n\n\n
\u4e94\u3001\u5904\u7406\u5927\u578b\u6587\u4ef6\uff1a\u9010\u884c\u8bfb\u53d6\u548c\u5185\u5b58\u7ba1\u7406<\/h3>\n\n\n\n
\u5f53\u5904\u7406\u5927\u578b\u6587\u4ef6\u65f6\uff0c\u6211\u4eec\u5e0c\u671b\u9010\u884c\u8bfb\u53d6\u6587\u4ef6\uff0c\u4ee5\u8282\u7701\u5185\u5b58\u3002\u53ef\u4ee5\u4f7f\u7528 with open()<\/code> \u548c\u9010\u884c\u8bfb\u53d6\u7684\u65b9\u6cd5\u3002<\/p>\n\n\n\n
1. \u9010\u884c\u8bfb\u53d6\u6587\u4ef6<\/strong><\/h4>\n\n\n\n
with open('large_file.txt', 'r') as file:\n    for line in file:\n        process(line)  # \u5904\u7406\u6bcf\u4e00\u884c<\/code><\/pre>\n\n\n\n
2. \u5904\u7406\u6587\u4ef6\u7684\u5206\u5757\u8bfb\u53d6<\/strong><\/h4>\n\n\n\n
\u5bf9\u4e8e\u975e\u5e38\u5927\u7684\u6587\u4ef6\uff0c\u53ef\u4ee5\u6309\u5757\uff08\u5982\u6bcf\u6b21\u8bfb\u53d6\u4e00\u5b9a\u6570\u91cf\u7684\u5b57\u7b26\uff09\u6765\u8fdb\u884c\u5904\u7406\uff1a<\/p>\n\n\n\n
def process_file_in_chunks(file_name, chunk_size=1024):\n    with open(file_name, 'r') as file:\n        while chunk := file.read(chunk_size):\n            process(chunk)  # \u6bcf\u6b21\u5904\u7406 chunk_size \u5b57\u8282\n\nprocess_file_in_chunks('large_file.txt', 2048)<\/code><\/pre>\n\n\n\n
\u516d\u3001\u603b\u7ed3<\/h3>\n\n\n\n
Python \u63d0\u4f9b\u4e86\u975e\u5e38\u4e30\u5bcc\u7684\u529f\u80fd\u6765\u81ea\u52a8\u5316\u6587\u4ef6\u5904\u7406\u3002\u901a\u8fc7 os<\/code>\u3001shutil<\/code>\u3001pathlib<\/code> \u7b49\u6a21\u5757\uff0c\u6211\u4eec\u53ef\u4ee5\u8f7b\u677e\u5b9e\u73b0\u6587\u4ef6\u548c\u76ee\u5f55\u7684\u64cd\u4f5c\uff0c\u5982\u6587\u4ef6\u7684\u8bfb\u53d6\u3001\u5199\u5165\u3001\u91cd\u547d\u540d\u3001\u5220\u9664\u7b49\u3002\u5bf9\u4e8e\u6279\u91cf\u5904\u7406\u548c\u5927\u578b\u6587\u4ef6\u5904\u7406\uff0cPython \u4e5f\u63d0\u4f9b\u4e86\u9ad8\u6548\u7684\u89e3\u51b3\u65b9\u6848\u3002\u901a\u8fc7\u8fd9\u4e9b\u6280\u5de7\u548c\u811a\u672c\uff0c\u80fd\u591f\u5e2e\u52a9\u4f60\u5927\u5e45\u63d0\u9ad8\u6587\u4ef6\u5904\u7406\u6548\u7387\uff0c\u51cf\u5c11\u624b\u52a8\u64cd\u4f5c\u7684\u9519\u8bef\u548c\u65f6\u95f4\u6d88\u8017\u3002<\/p>\n\n\n\n
\u65e0\u8bba\u662f\u5bf9\u5355\u4e2a\u6587\u4ef6\u8fdb\u884c\u64cd\u4f5c\uff0c\u8fd8\u662f\u5bf9\u6574\u4e2a\u76ee\u5f55\u6811\u8fdb\u884c\u6279\u91cf\u5904\u7406\uff0cPython \u90fd\u80fd\u591f\u5e2e\u52a9\u4f60\u8f7b\u677e\u5b9e\u73b0\u6587\u4ef6\u5904\u7406\u7684\u81ea\u52a8\u5316\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
Python \u662f\u4e00\u95e8\u975e\u5e38\u9002\u5408\u6587\u4ef6\u5904\u7406\u7684\u7f16\u7a0b\u8bed\u8a00\uff0c\u5b83\u62e5\u6709\u5f3a\u5927\u7684\u6807\u51c6\u5e93\u548c\u7b2c\u4e09\u65b9\u5e93\uff0c\u53ef\u4ee5\u5e2e\u52a9\u6211\u4eec\u9ad8\u6548\u5730\u8fdb\u884c\u6587\u4ef6\u8bfb\u5199\u3001 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[54],"tags":[],"class_list":["post-912","post","type-post","status-publish","format-standard","hentry","category-python"],"_links":{"self":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/912","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/comments?post=912"}],"version-history":[{"count":1,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/912\/revisions"}],"predecessor-version":[{"id":913,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/posts\/912\/revisions\/913"}],"wp:attachment":[{"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/media?parent=912"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/categories?post=912"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.laixuexila.com\/index.php\/wp-json\/wp\/v2\/tags?post=912"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}