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

王林
王林Original
2024-04-04 08:39:01582browse

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
# ...

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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