trace.py 文件源码

def run(self, cmd):
        import __main__
        dict = __main__.__dict__
        if not self.donothing:
            threading.settrace(self.globaltrace)
            sys.settrace(self.globaltrace)
        try:
            exec cmd in dict, dict
        finally:
            if not self.donothing:
                sys.settrace(None)
                threading.settrace(None)