Python and plone output of 'None'

Question

I have a python script in Plone:

query = 'hello me'
print context.run_blast_query(query)
return printed

I have a external script:

def print_query(x):
    return x

The plone script should call the external script and print 'hello me' but instead prints 'none'. I know the function names dont match it is parsed via a external method.

Any help?