VPython脚本的输出是什么？为什么对我来说它是用镀铬的？

每当我使用vpython库运行脚本时，可视化就会在google chrome选项卡中打开

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我想知道为什么会出现这种情况，以及vpython可视化的输出是什么，它将在Chrome选项卡中打开。

好吧，如果打开

站点包/vpython/no_notebook.py

，您将看到：

import webbrowser as _webbrowser

就这样

在幕后，它在“无jupyter笔记本模式”中的作用是启动一个线程本地HTTP服务器，提供一些javascript，然后在web浏览器中打开一个页面连接到该服务器。其余的只是服务器和客户机之间的数据交换，就像任何其他web应用程序一样

有关数据交换的更详细说明，请参见

站点包/vpython/vpython.py

：

# Now there is no threading in Jupyter VPython. Data is sent to the
# browser from the trigger() function, which is called by a
# canvas_update event sent to Python from the browser (glowcomm.js), currently
# every 33 milliseconds. When trigger() is called, it immediately signals
# the browser to set a timeout of 33 ms to send another signal to Python.
# Note that a typical VPython program starts out by creating objects (constructors) and
# specifying their attributes. The 33 ms signal from the browser is adequate to ensure
# prompt data transmissions to the browser.

# The situation with non-notebook use is similar, but the http server is threaded,
# in order to serve glowcomm.html, jpg texture files, and font files, and the
# websocket is also threaded.

# In both the notebook and non-notebook cases output is buffered in baseObj.updates
# and sent as a block to the browser at render times.

老实说，我不认为vpython的模型是一个好的API模型（一方面，在普通的交互式shell中使用它很尴尬），但我想它是可行的