Make it work under any Python version.
Make it work under any Python version.

ninemoreminutes/pycurl,ninemoreminutes/pycurl,jcharum/pycurl,m13253/pycurl-python3,ninemoreminutes/pycurl,m13253/pycurl-python3,ninemoreminutes/pycurl,jcharum/pycurl,jcharum/pycurl,m13253/pycurl-python3