[newbie] how to make program suggest to install missing modules

[hugocoolens]

On Monday, December 8, 2014 9:00:13 PM UTC+1, sohca... at gmail.com wrote:
> On Monday, December 8, 2014 10:46:47 AM UTC-8, Jean-Michel Pichavant wrote:
> > ----- Original Message -----
> > > From: sohcahtoa82 at gmail.com
> > > try:
> > >     import someModule
> > > except ImportError:
> > >     print "Module is missing"
> > >     # handle it!
> > > 
> > > Just make sure to attempt to import it again after making the call to
> > > pip to install it.
> > 
> > Note that ImportError may be raised for other reasons than a missing module.
> > 
> > Check https://docs.python.org/2/library/imp.html and the imp.find_module, it could be a safer way to check for a missing module.
> > 
> > JM
> > 
> > 
> > -- IMPORTANT NOTICE: 
> > 
> > The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.
> Good point.
> Of course, imp.find_module ALSO throws ImportError if the module can't be found, but at least in that case, you'd know the exact cause.

Thanks for the suggestions, you can see here below what I came up with.
All suggestions/corrections welcome:

#!/usr/bin/env python
import imp
import os
import sys
try:
    imp.find_module('rtlsdr')
except ImportError:
    print('Module rtlsdr is missing')
    print("I'll try to install it")
    os.system('sudo pip install pyrtlsdr')
    try:
        imp.find_module('rtlsdr')
    except ImportError:
        sys.exit('Sorry could not install module rtlsdr, contact your
local Python-guru')
import rtlsdr
print('Module rtlsdr succesfully imported')