How can I turn off error printing in libxml2.parseDoc?
Question: When using the library, I expect an exception for bad input, but I do not want
it to start printing things to stderr. How can I configure it to not print
anything?

Here's an example from the REPL of what I am talking about:

    
    
    >>> import libxml2
    >>> try:
    ...     libxml2.parseDoc('junk')
    ... except:
    ...     pass
    ... 
    Entity: line 1: parser error : Start tag expected, '<' not found
    junk
    ^
    >>> 
    

With that code I expect to see nothing printed out. I found [this SO
post](http://stackoverflow.com/questions/2801315/disable-debug-output-in-
libxml2-and-xmlsec) about a similar issue with the c++ xmllib2, but I don't
see a way to do that with the python version.


Answer: You can **disable error logging** for `libxml2` by registering a silent error
handler:

    
    
    def noerr(ctx, str):
        pass
    
    libxml2.registerErrorHandler(noerr, None)
    

Source: <http://xmlsoft.org/python.html>

