Python（Eclipse Pydev）导入requests失败求助：如何管理导入？

Hey there! As someone who’s stumbled through PyDev setup when I was a Python newbie, let me walk you through fixing this requests import problem step by step. The issue here is that just dropping the requests-master folder into your project isn’t the right way to install and use Python packages—let’s do it properly:

1. Install Requests Using Pip (The Standard Way) #

Pip is Python’s official package manager, and it’s the easiest way to get libraries like requests set up correctly. Here’s how:

• Open your terminal (Command Prompt on Windows, Terminal on Mac/Linux)
• Run this command to install requests:

  pip install requests
  

• If you have multiple Python versions installed (like Python 2 and 3), use pip3 install requests instead, or explicitly call the Python version you’re using in Eclipse:

  python3 -m pip install requests
  

2. Tell PyDev About the Installed Requests Package #

Once requests is installed, you need to make sure PyDev recognizes it:

• In Eclipse, go to Window > Preferences > PyDev > Interpreters > Python Interpreter
• You’ll see a list of installed packages. Click Apply and Close—PyDev will automatically scan for new packages, including requests.
• If requests doesn’t show up in the list, go to the Forced Builtins tab, click New..., type requests, and hit OK. This forces PyDev to recognize the package.

3. Verify Your Project’s Python Interpreter #

Sometimes the issue is that your project is using a different Python interpreter than the one where you installed requests:

• Right-click your project in the Package Explorer, then select Properties > PyDev - Interpreter/Grammar
• Make sure the interpreter selected here is the same one you used with pip (e.g., if you installed with pip3, pick the Python 3.x interpreter)
• Click Apply and Close to save changes.

4. Clean Up the Unnecessary Folder #

You can go ahead and remove the requests-master folder from your project now—since we’ve installed requests properly via pip, you don’t need the source folder cluttering things up.

After following these steps, you should be able to run import requests in your code without any errors. Let me know if you hit any snags along the way!

内容的提问来源于stack exchange，提问作者Wbs