PyV8 介绍
PyV8 是 V8 引擎的 Python 语言封装，这是 Python 和
JavaScript 对象之间的桥，支持在 Python 脚本中调用 V8 引擎。
>>> import PyV8
>>> ctxt = PyV8.JSContext() # create a context with an implicit global object
>>> ctxt.enter() # enter the context (also support with statement)
>>> ctxt.eval("1+2") # evalute the javascript expression
3 # return a native python int
>>> class Global(PyV8.JSClass): # define a compatible javascript class
... def hello(self): # define a method
... print "Hello World"
...
>>> ctxt2 = PyV8.JSContext(Global()) # create another context with the global object
>>> ctxt2.enter()
>>> ctxt2.eval("hello()") # call the global object from javascript
Hello World # the output from python script