{"id":1114293,"date":"2025-01-08T17:55:48","date_gmt":"2025-01-08T09:55:48","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1114293.html"},"modified":"2025-01-08T17:55:50","modified_gmt":"2025-01-08T09:55:50","slug":"python-%e5%a6%82%e4%bd%95%e4%b8%80%e8%a1%8c%e4%b8%80%e8%a1%8c%e8%af%bb","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1114293.html","title":{"rendered":"python \u5982\u4f55\u4e00\u884c\u4e00\u884c\u8bfb"},"content":{"rendered":"

\"python<\/p>\n

Python \u4e00\u884c\u4e00\u884c\u8bfb\u6587\u4ef6\u7684\u51e0\u79cd\u65b9\u6cd5\u5305\u62ec\uff1a\u4f7f\u7528 readline()\u3001\u4f7f\u7528 for \u5faa\u73af\u3001\u4f7f\u7528 readlines() \u65b9\u6cd5<\/strong>\u3002\u5176\u4e2d\uff0c\u63a8\u8350\u4f7f\u7528 for \u5faa\u73af\uff0c\u56e0\u4e3a\u5b83\u4e0d\u4ec5\u7b80\u6d01\u6613\u61c2\uff0c\u800c\u4e14\u6027\u80fd\u4f18\u8d8a\u3002\u4e0b\u9762\u8be6\u7ec6\u4ecb\u7ecd\u4f7f\u7528 for \u5faa\u73af\u8bfb\u53d6\u6587\u4ef6\u7684\u65b9\u6cd5\u3002<\/p>\n<\/p>\n

\u4f7f\u7528 for \u5faa\u73af\u8bfb\u53d6\u6587\u4ef6\u662f\u4e00\u79cd\u975e\u5e38\u9ad8\u6548\u7684\u65b9\u6cd5\uff0c\u56e0\u4e3a\u5b83\u4f1a\u9010\u884c\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff0c\u4e0d\u4f1a\u4e00\u6b21\u6027\u5c06\u6574\u4e2a\u6587\u4ef6\u52a0\u8f7d\u5230\u5185\u5b58\u4e2d\uff0c\u4ece\u800c\u53ef\u4ee5\u5904\u7406\u5927\u578b\u6587\u4ef6\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<\/p>\n

with open('example.txt', 'r') as file:<\/p>\n
    for line in file:<\/p>\n
        print(line.strip())<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0copen()<\/code> \u51fd\u6570\u4ee5\u53ea\u8bfb\u6a21\u5f0f\u6253\u5f00\u4e86\u6587\u4ef6 example.txt<\/code>\uff0c\u5e76\u4f7f\u7528 with<\/code> \u8bed\u53e5\u786e\u4fdd\u6587\u4ef6\u5728\u8bfb\u53d6\u5b8c\u6bd5\u540e\u81ea\u52a8\u5173\u95ed\u3002for line in file<\/code> \u4f1a\u9010\u884c\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff0cline.strip()<\/code> \u7528\u4e8e\u53bb\u9664\u6bcf\u884c\u672b\u5c3e\u7684\u6362\u884c\u7b26\u3002<\/p>\n<\/p>\n
\u4e00\u3001\u4f7f\u7528 readline() \u65b9\u6cd5<\/h2>\n<\/p>\n
readline()<\/code> \u65b9\u6cd5\u53ef\u4ee5\u9010\u884c\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff0c\u6bcf\u6b21\u8c03\u7528\u8bfb\u53d6\u4e00\u884c\u3002\u867d\u7136\u8fd9\u79cd\u65b9\u6cd5\u4e5f\u80fd\u5b9e\u73b0\u9010\u884c\u8bfb\u53d6\u6587\u4ef6\uff0c\u4f46\u4e0e for \u5faa\u73af\u76f8\u6bd4\uff0c\u4ee3\u7801\u7565\u663e\u5197\u957f\uff0c\u800c\u4e14\u9700\u8981\u624b\u52a8\u5904\u7406\u6587\u4ef6\u5173\u95ed\u64cd\u4f5c\u3002<\/p>\n<\/p>\n
file = open('example.txt', 'r')<\/p>\n
while True:<\/p>\n
    line = file.readline()<\/p>\n
    if not line:<\/p>\n
        break<\/p>\n
    print(line.strip())<\/p>\n
file.close()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0creadline()<\/code> \u65b9\u6cd5\u88ab\u653e\u5728\u4e00\u4e2a while<\/code> \u5faa\u73af\u4e2d\uff0c\u6bcf\u6b21\u8bfb\u53d6\u4e00\u884c\uff0c\u5e76\u68c0\u67e5\u8be5\u884c\u662f\u5426\u4e3a\u7a7a\u3002\u5982\u679c\u4e3a\u7a7a\uff0c\u5219\u8df3\u51fa\u5faa\u73af\u3002\u6700\u540e\uff0c\u901a\u8fc7 file.close()<\/code> \u5173\u95ed\u6587\u4ef6\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528 readlines() \u65b9\u6cd5<\/h2>\n<\/p>\n
readlines()<\/code> \u65b9\u6cd5\u4f1a\u4e00\u6b21\u6027\u8bfb\u53d6\u6587\u4ef6\u7684\u6240\u6709\u884c\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u5305\u542b\u8fd9\u4e9b\u884c\u7684\u5217\u8868\u3002\u867d\u7136\u8fd9\u79cd\u65b9\u6cd5\u5728\u5904\u7406\u5c0f\u578b\u6587\u4ef6\u65f6\u975e\u5e38\u65b9\u4fbf\uff0c\u4f46\u5bf9\u4e8e\u5927\u578b\u6587\u4ef6\u6765\u8bf4\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u5185\u5b58\u4e0d\u8db3\u7684\u95ee\u9898\u3002<\/p>\n<\/p>\n
with open('example.txt', 'r') as file:<\/p>\n
    lines = file.readlines()<\/p>\n
    for line in lines:<\/p>\n
        print(line.strip())<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0creadlines()<\/code> \u65b9\u6cd5\u8bfb\u53d6\u4e86\u6587\u4ef6\u7684\u6240\u6709\u884c\uff0c\u5e76\u5c06\u5b83\u4eec\u5b58\u50a8\u5728 lines<\/code> \u5217\u8868\u4e2d\u3002\u968f\u540e\uff0c\u4f7f\u7528 for line in lines<\/code> \u9010\u884c\u6253\u5370\u6bcf\u4e00\u884c\u7684\u5185\u5bb9\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u9010\u884c\u5904\u7406\u5927\u6587\u4ef6<\/h2>\n<\/p>\n
\u5728\u5904\u7406\u5927\u6587\u4ef6\u65f6\uff0c\u4f7f\u7528 for \u5faa\u73af\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\u662f\u6700\u4f18\u9009\u62e9\uff0c\u56e0\u4e3a\u5b83\u4e0d\u4f1a\u5360\u7528\u5927\u91cf\u5185\u5b58\u3002\u4e0b\u9762\u662f\u4e00\u4e2a\u66f4\u4e3a\u590d\u6742\u7684\u793a\u4f8b\uff0c\u5c55\u793a\u5982\u4f55\u9010\u884c\u5904\u7406\u5927\u6587\u4ef6\uff1a<\/p>\n<\/p>\n
def process_line(line):<\/p>\n
    # \u5bf9\u6bcf\u4e00\u884c\u8fdb\u884c\u4e00\u4e9b\u5904\u7406<\/p>\n
    return line.upper()<\/p>\n
with open('large_file.txt', 'r') as file:<\/p>\n
    for line in file:<\/p>\n
        processed_line = process_line(line.strip())<\/p>\n
        print(processed_line)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0cprocess_line()<\/code> \u51fd\u6570\u7528\u4e8e\u5bf9\u6bcf\u4e00\u884c\u8fdb\u884c\u5904\u7406\uff0c\u4f8b\u5982\u5c06\u5176\u8f6c\u6362\u4e3a\u5927\u5199\u3002\u901a\u8fc7 for line in file<\/code> \u9010\u884c\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff0c\u5e76\u5c06\u6bcf\u4e00\u884c\u4f20\u9012\u7ed9 process_line()<\/code> \u51fd\u6570\u5904\u7406\uff0c\u6700\u540e\u6253\u5370\u5904\u7406\u540e\u7684\u7ed3\u679c\u3002<\/p>\n<\/p>\n
\u56db\u3001\u4f7f\u7528\u751f\u6210\u5668\u8fdb\u884c\u9010\u884c\u8bfb\u53d6<\/h2>\n<\/p>\n
\u751f\u6210\u5668\u662f\u4e00\u79cd\u975e\u5e38\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u7528\u4e8e\u9010\u884c\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff0c\u5e76\u5728\u9700\u8981\u65f6\u751f\u6210\u6570\u636e\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528\u751f\u6210\u5668\u9010\u884c\u8bfb\u53d6\u6587\u4ef6\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
def read_file_in_chunks(file_path, chunk_size=1024):<\/p>\n
    with open(file_path, 'r') as file:<\/p>\n
        while True:<\/p>\n
            data = file.read(chunk_size)<\/p>\n
            if not data:<\/p>\n
                break<\/p>\n
            yield data<\/p>\n
for chunk in read_file_in_chunks('example.txt'):<\/p>\n
    print(chunk.strip())<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0cread_file_in_chunks()<\/code> \u51fd\u6570\u662f\u4e00\u4e2a\u751f\u6210\u5668\u51fd\u6570\uff0c\u5b83\u6bcf\u6b21\u8bfb\u53d6\u6307\u5b9a\u5927\u5c0f\u7684\u5757\uff0c\u5e76\u901a\u8fc7 yield<\/code> \u5173\u952e\u5b57\u8fd4\u56de\u6570\u636e\u3002\u4f7f\u7528 for chunk in read_file_in_chunks('example.txt')<\/code> \u9010\u5757\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff0c\u5e76\u6253\u5370\u6bcf\u4e00\u5757\u7684\u5185\u5bb9\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u7ed3\u5408\u6b63\u5219\u8868\u8fbe\u5f0f\u8fdb\u884c\u9010\u884c\u8bfb\u53d6<\/h2>\n<\/p>\n
\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\uff0c\u9700\u8981\u5bf9\u6bcf\u4e00\u884c\u8fdb\u884c\u590d\u6742\u7684\u6a21\u5f0f\u5339\u914d\u548c\u5904\u7406\u3002\u6b64\u65f6\uff0c\u53ef\u4ee5\u7ed3\u5408\u6b63\u5219\u8868\u8fbe\u5f0f\u8fdb\u884c\u9010\u884c\u8bfb\u53d6\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
import re<\/p>\n
pattern = re.compile(r'\\d+')<\/p>\n
with open('example.txt', 'r') as file:<\/p>\n
    for line in file:<\/p>\n
        match = pattern.search(line)<\/p>\n
        if match:<\/p>\n
            print(f"Found number: {match.group()}")<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0cre.compile(r'\\d+')<\/code> \u7f16\u8bd1\u4e86\u4e00\u4e2a\u5339\u914d\u6570\u5b57\u7684\u6b63\u5219\u8868\u8fbe\u5f0f\u6a21\u5f0f\u3002\u901a\u8fc7 for line in file<\/code> \u9010\u884c\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff0c\u5e76\u4f7f\u7528 pattern.search(line)<\/code> \u8fdb\u884c\u6a21\u5f0f\u5339\u914d\u3002\u5982\u679c\u627e\u5230\u5339\u914d\u9879\uff0c\u5219\u6253\u5370\u5339\u914d\u7684\u6570\u5b57\u3002<\/p>\n<\/p>\n
\u516d\u3001\u4f7f\u7528 contextlib.closing() \u8fdb\u884c\u6587\u4ef6\u5904\u7406<\/h2>\n<\/p>\n
\u5728\u67d0\u4e9b\u7279\u6b8a\u60c5\u51b5\u4e0b\uff0c\u53ef\u80fd\u9700\u8981\u66f4\u7075\u6d3b\u7684\u6587\u4ef6\u5173\u95ed\u673a\u5236\u3002\u6b64\u65f6\uff0c\u53ef\u4ee5\u4f7f\u7528 contextlib.closing()<\/code> \u8fdb\u884c\u6587\u4ef6\u5904\u7406\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
from contextlib import closing<\/p>\n
with closing(open('example.txt', 'r')) as file:<\/p>\n
    for line in file:<\/p>\n
        print(line.strip())<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0cclosing(open('example.txt', 'r'))<\/code> \u6253\u5f00\u6587\u4ef6\uff0c\u5e76\u4f7f\u7528 with<\/code> \u8bed\u53e5\u786e\u4fdd\u6587\u4ef6\u5728\u8bfb\u53d6\u5b8c\u6bd5\u540e\u81ea\u52a8\u5173\u95ed\u3002\u901a\u8fc7 for line in file<\/code> \u9010\u884c\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff0c\u5e76\u6253\u5370\u6bcf\u4e00\u884c\u7684\u5185\u5bb9\u3002<\/p>\n<\/p>\n
\u4e03\u3001\u4f7f\u7528 pathlib \u8fdb\u884c\u6587\u4ef6\u5904\u7406<\/h2>\n<\/p>\n
pathlib<\/code> \u662f Python 3.4 \u5f15\u5165\u7684\u4e00\u4e2a\u6a21\u5757\uff0c\u7528\u4e8e\u7b80\u5316\u6587\u4ef6\u8def\u5f84\u64cd\u4f5c\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528 pathlib<\/code> \u9010\u884c\u8bfb\u53d6\u6587\u4ef6\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
from pathlib import Path<\/p>\n
file_path = Path('example.txt')<\/p>\n
with file_path.open('r') as file:<\/p>\n
    for line in file:<\/p>\n
        print(line.strip())<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0cPath('example.txt')<\/code> \u521b\u5efa\u4e86\u4e00\u4e2a\u6587\u4ef6\u8def\u5f84\u5bf9\u8c61\uff0c\u5e76\u901a\u8fc7 file_path.open('r')<\/code> \u6253\u5f00\u6587\u4ef6\u3002\u4f7f\u7528 with<\/code> \u8bed\u53e5\u786e\u4fdd\u6587\u4ef6\u5728\u8bfb\u53d6\u5b8c\u6bd5\u540e\u81ea\u52a8\u5173\u95ed\uff0c\u5e76\u901a\u8fc7 for line in file<\/code> \u9010\u884c\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\u3002<\/p>\n<\/p>\n
\u516b\u3001\u4f7f\u7528 pandas \u8fdb\u884c\u6587\u4ef6\u5904\u7406<\/h2>\n<\/p>\n
pandas<\/code> \u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u6570\u636e\u5904\u7406\u5e93\uff0c\u7279\u522b\u9002\u5408\u5904\u7406\u7ed3\u6784\u5316\u6570\u636e\u3002\u867d\u7136 pandas<\/code> \u901a\u5e38\u7528\u4e8e\u8bfb\u53d6 CSV \u6587\u4ef6\uff0c\u4f46\u5b83\u4e5f\u53ef\u4ee5\u7528\u4e8e\u9010\u884c\u8bfb\u53d6\u6587\u672c\u6587\u4ef6\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
import pandas as pd<\/p>\n
file_path = 'example.txt'<\/p>\n
with pd.read_csv(file_path, chunksize=1) as reader:<\/p>\n
    for chunk in reader:<\/p>\n
        print(chunk.iloc[0].to_string().strip())<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0cpd.read_csv(file_path, chunksize=1)<\/code> \u9010\u884c\u8bfb\u53d6\u6587\u4ef6\uff0c\u5e76\u8fd4\u56de\u4e00\u4e2a\u8fed\u4ee3\u5668\u3002\u901a\u8fc7 for chunk in reader<\/code> \u9010\u884c\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff0c\u5e76\u6253\u5370\u6bcf\u4e00\u884c\u7684\u5185\u5bb9\u3002<\/p>\n<\/p>\n
\u4e5d\u3001\u4f7f\u7528 itertools \u8fdb\u884c\u6587\u4ef6\u5904\u7406<\/h2>\n<\/p>\n
itertools<\/code> \u662f Python \u7684\u4e00\u4e2a\u6807\u51c6\u5e93\uff0c\u63d0\u4f9b\u4e86\u8bb8\u591a\u9ad8\u6548\u7684\u8fed\u4ee3\u5668\u64cd\u4f5c\u5de5\u5177\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u4f7f\u7528 itertools<\/code> \u9010\u884c\u8bfb\u53d6\u6587\u4ef6\u7684\u793a\u4f8b\uff1a<\/p>\n<\/p>\n
import itertools<\/p>\n
file_path = 'example.txt'<\/p>\n
with open(file_path, 'r') as file:<\/p>\n
    for line in itertools.islice(file, 10):<\/p>\n
        print(line.strip())<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u793a\u4f8b\u4e2d\uff0citertools.islice(file, 10)<\/code> \u521b\u5efa\u4e86\u4e00\u4e2a\u8fed\u4ee3\u5668\uff0c\u7528\u4e8e\u8bfb\u53d6\u6587\u4ef6\u7684\u524d 10 \u884c\u3002\u901a\u8fc7 for line in itertools.islice(file, 10)<\/code> \u9010\u884c\u8bfb\u53d6\u6587\u4ef6\u5185\u5bb9\uff0c\u5e76\u6253\u5370\u6bcf\u4e00\u884c\u7684\u5185\u5bb9\u3002<\/p>\n<\/p>\n
\u5341\u3001\u603b\u7ed3<\/h2>\n<\/p>\n
\u901a\u8fc7\u672c\u6587\u7684\u4ecb\u7ecd\uff0c\u6211\u4eec\u4e86\u89e3\u4e86 Python \u4e2d\u9010\u884c\u8bfb\u53d6\u6587\u4ef6\u7684\u591a\u79cd\u65b9\u6cd5\uff0c\u5305\u62ec\u4f7f\u7528 for<\/code> \u5faa\u73af\u3001readline()<\/code> \u65b9\u6cd5\u3001readlines()<\/code> \u65b9\u6cd5\u3001\u751f\u6210\u5668\u3001\u6b63\u5219\u8868\u8fbe\u5f0f\u3001contextlib.closing()<\/code>\u3001pathlib<\/code>\u3001pandas<\/code> \u548c itertools<\/code> \u7b49\u3002\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u72ec\u7279\u7684\u4f18\u52bf\u548c\u9002\u7528\u573a\u666f\u3002\u5728\u5b9e\u9645\u9879\u76ee\u4e2d\uff0c\u53ef\u4ee5\u6839\u636e\u5177\u4f53\u9700\u6c42\u9009\u62e9\u6700\u9002\u5408\u7684\u65b9\u6cd5\u8fdb\u884c\u6587\u4ef6\u5904\u7406\u3002<\/p>\n<\/p>\n
\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
 \u5982\u4f55\u5728Python\u4e2d\u9010\u884c\u8bfb\u53d6\u6587\u4ef6\uff1f<\/strong>
\u5728Python\u4e2d\u9010\u884c\u8bfb\u53d6\u6587\u4ef6\u975e\u5e38\u7b80\u5355\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528for<\/code>\u5faa\u73af\u4e0e\u6587\u4ef6\u5bf9\u8c61\u4e00\u8d77\u4f7f\u7528\u3002\u4ee5\u4e0b\u662f\u4e00\u4e2a\u793a\u4f8b\u4ee3\u7801\uff1a  <\/p>\n
with open('yourfile.txt', 'r') as file:\n    for line in file:\n        print(line.strip())\n<\/code><\/pre>\n
\u8fd9\u79cd\u65b9\u6cd5\u4f1a\u81ea\u52a8\u5904\u7406\u6587\u4ef6\u7684\u6253\u5f00\u548c\u5173\u95ed\uff0c\u5e76\u4e14\u4f7f\u7528strip()<\/code>\u65b9\u6cd5\u53ef\u4ee5\u53bb\u9664\u6bcf\u884c\u672b\u5c3e\u7684\u6362\u884c\u7b26\u3002<\/p>\n
\u9010\u884c\u8bfb\u53d6\u6587\u4ef6\u6709\u4ec0\u4e48\u4f18\u52bf\uff1f<\/strong>
\u9010\u884c\u8bfb\u53d6\u6587\u4ef6\u53ef\u4ee5\u6709\u6548\u7ba1\u7406\u5185\u5b58\uff0c\u7279\u522b\u662f\u5728\u5904\u7406\u5927\u578b\u6587\u4ef6\u65f6\u3002\u4e0e\u4e00\u6b21\u6027\u52a0\u8f7d\u6574\u4e2a\u6587\u4ef6\u5230\u5185\u5b58\u76f8\u6bd4\uff0c\u9010\u884c\u8bfb\u53d6\u53ef\u4ee5\u663e\u8457\u964d\u4f4e\u5185\u5b58\u4f7f\u7528\u7387\uff0c\u907f\u514d\u56e0\u6587\u4ef6\u8fc7\u5927\u800c\u5bfc\u81f4\u7684\u5185\u5b58\u6ea2\u51fa\u3002<\/p>\n
\u5728Python\u4e2d\u5982\u4f55\u5904\u7406\u6587\u4ef6\u8bfb\u53d6\u65f6\u7684\u5f02\u5e38\uff1f<\/strong>
\u5728\u8bfb\u53d6\u6587\u4ef6\u65f6\uff0c\u53ef\u80fd\u4f1a\u9047\u5230\u5404\u79cd\u5f02\u5e38\uff0c\u4f8b\u5982\u6587\u4ef6\u4e0d\u5b58\u5728\u6216\u6743\u9650\u4e0d\u8db3\u3002\u60a8\u53ef\u4ee5\u4f7f\u7528try-except<\/code>\u8bed\u53e5\u6765\u6355\u83b7\u8fd9\u4e9b\u5f02\u5e38\u3002\u793a\u4f8b\u4ee3\u7801\u5982\u4e0b\uff1a  <\/p>\n
try:\n    with open('yourfile.txt', 'r') as file:\n        for line in file:\n            print(line.strip())\nexcept FileNotFoundError:\n    print("\u6587\u4ef6\u672a\u627e\u5230\uff0c\u8bf7\u68c0\u67e5\u6587\u4ef6\u8def\u5f84\u3002")\nexcept PermissionError:\n    print("\u6743\u9650\u4e0d\u8db3\uff0c\u65e0\u6cd5\u8bfb\u53d6\u6587\u4ef6\u3002")\n<\/code><\/pre>\n
\u8fd9\u6837\u53ef\u4ee5\u786e\u4fdd\u60a8\u7684\u7a0b\u5e8f\u5728\u9047\u5230\u9519\u8bef\u65f6\u4e0d\u4f1a\u5d29\u6e83\uff0c\u5e76\u63d0\u4f9b\u7528\u6237\u53cb\u597d\u7684\u9519\u8bef\u4fe1\u606f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"Python \u4e00\u884c\u4e00\u884c\u8bfb\u6587\u4ef6\u7684\u51e0\u79cd\u65b9\u6cd5\u5305\u62ec\uff1a\u4f7f\u7528 readline()\u3001\u4f7f\u7528 for \u5faa\u73af\u3001\u4f7f\u7528 readli […]","protected":false},"author":3,"featured_media":1114299,"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\/1114293"}],"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=1114293"}],"version-history":[{"count":"1","href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1114293\/revisions"}],"predecessor-version":[{"id":1114304,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/1114293\/revisions\/1114304"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/1114299"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=1114293"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=1114293"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=1114293"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}