达叔

from http.server import BaseHTTPRequestHandler
from http.server import HTTPServer
from PyQt5 import QtCore
import time

class MyHttpServer(HTTPServer):
    def log_message(self, format, *args):
        pass

class TodoHandler(BaseHTTPRequestHandler):
    def do_GET(self):
        if self.path != '/':
            self.send_error(404, "File not found.")
            return
        self.send_response(200)
        self.send_header('Content-type', 'application/json')
        self.end_headers()
        self.wfile.write(b"{}")

        self.server.request_.emit( 5.0, 5.0 )
 
    def log_message(self, format, *args):
        pass

class TestRun(QtCore.QObject):

    request_ = QtCore.pyqtSignal(float, float)

    def __init__(self):
        QtCore.QObject.__init__(self)

    def run(self):
        #for i in range(0,100):
        #    time.sleep(0.1)
        #    print(i)
        #print('-- server running --')
        server = MyHttpServer(('localhost', 8888), TodoHandler)
        server.request_ = self.request_
        server.serve_forever()

class TestRev(QtCore.QObject):
    def __init__(self):
        QtCore.QObject.__init__(self)

    def onRequest(self, x, y):
        ext = iface.mapCanvas().extent()
        ext += QgsVector(int(x),int(y))
        iface.mapCanvas().setExtent(ext)

    def onError(self, e, exception_string):
        print('Worker thread raised an exception:\n'.format(exception_string))
    
a = TestRev()

r = TestRun()
t = QtCore.QThread()
r.moveToThread(t)
r.request_.connect(a.onRequest)
t.started.connect(r.run)
t.start()