do not allow debugdata to be set by the user since it's used internally by the debug callback system
do not allow debugdata to be set by the user since it's used internally
by the debug callback system

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