Home Backend Development Python Tutorial Share the solution to the problem that the path is lost after Python downloads the file

Share the solution to the problem that the path is lost after Python downloads the file

Apr 04, 2024 am 08:39 AM
python download file

使用pathlib模块解决Python下载文件后路径丢失问题:创建pathlib的Path对象,指定要下载文件的路径。使用requests库下载文件并保存到指定路径。使用Path.resolve()方法获取文件的绝对路径。使用绝对路径访问或处理下载的文件。

Share the solution to the problem that the path is lost after Python downloads the file

Python下载文件后路径丢失的解决方法

问题描述

在使用Python下载文件后,有时会遇到路径丢失的问题。这会导致无法访问或处理已下载的文件。

解决方法

要解决此问题,可以使用pathlib模块。该模块提供了用于管理文件和目录路径的高级工具。

以下是如何使用pathlib解决路径丢失问题的代码:

import pathlib

# 创建 pathlib 的 Path 对象
path = pathlib.Path("file_name.txt")

# 下载文件到 path 指定的路径
res = requests.get(file_url, stream=True)  # 替换 file_url 为文件的下载地址
with open(path, "wb") as f:
    for chunk in res.iter_content(chunk_size=1024):
        f.write(chunk)

# 获取文件的绝对路径
absolute_path = path.resolve()

# 使用绝对路径访问或处理文件
# ...
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实战案例

假设你要从 URL 下载文件并保存在本地目录中。以下是如何使用上述方法实现的:

import pathlib
import requests

# 创建 pathlib 的 Path 对象
path = pathlib.Path("./local_directory/file_name.txt")

# 下载文件到 path 指定的路径
res = requests.get("https://cdn.example.com/file.txt", stream=True)
with open(path, "wb") as f:
    for chunk in res.iter_content(chunk_size=1024):
        f.write(chunk)

# 获取文件的绝对路径
absolute_path = path.resolve()

# 打开并读取文件
with open(absolute_path, "r") as f:
    content = f.read()

# 打印文件内容
print(content)
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