pipe "less" content out, when "less" get content from stdin
Question: In "ipython", we use `some_obj??` to get documentation, which uses "less" to
show the docs. How can we get the document out of "less", into a text editor?
The content is fed from stdin, so pressing "v" gives the error: "can not edit
standard input"


Answer: `some_obj??` is equivalent the built-in `help` function. This is a wrapper
around pydoc.help.

    
    
    import pydoc
    doc = pydoc.text.document(some_obj)
    print doc
    

You may save the documentation to a file. Then open in a text editor.

