如何在Atom的Hydrogen中配置使用Python 3运行脚本？

Got it, let's get your Hydrogen set up to run scripts with Python 3 instead of your Mac's default Python 2. Here's a straightforward, step-by-step guide:

Step 1: Locate your Python 3 installation path #

First, open Terminal and run this command to get the exact file path of your Python 3 installation:

which python3

You’ll get a result like /usr/local/bin/python3 (for Intel-based Macs) or /opt/homebrew/bin/python3 (for Apple Silicon Macs). Keep this path handy—you might need it if things don’t work smoothly later.

Step 2: Install and register the Python 3 kernel for Hydrogen #

Hydrogen relies on IPython kernels to execute code, so we need to set up a dedicated Python 3 kernel. Run these commands in Terminal one after another:

1. Install the ipykernel package (this bridges Hydrogen and Python 3):

   python3 -m pip install ipykernel
   

2. Register the Python 3 kernel with Jupyter (Hydrogen uses Jupyter under the hood):

   python3 -m ipykernel install --user --name python3 --display-name "Python 3"
   

Step 3: Select Python 3 as your active kernel in Hydrogen #

Open Atom and pull up a Python file you want to run:

• Press Cmd+Shift+P (Mac shortcut) to open the command panel.
• Type Hydrogen: Select Kernel and hit Enter.
• From the dropdown menu, pick the Python 3 option we just registered.

Optional: Set Python 3 as the default kernel #

If you want Hydrogen to automatically use Python 3 every time you launch it:

• Open Atom’s settings by pressing Cmd+,.
• Search for "Hydrogen" in the settings sidebar.
• Scroll down to the "Default Kernel" section, then select python3 from the dropdown list.

That’s all! Now when you run code blocks with Hydrogen (either via the run button or Cmd+Enter), it’ll use Python 3 instead of the system’s old Python 2.

内容的提问来源于stack exchange，提问作者ExpertShaun