In [12]: cProfile.run("for _ in range(100_000): Bar()")                                                                                                                                                            
         200003 function calls in 0.136 seconds                                                                                                                                                                    
                                                                                                                                                                                                                   
   Ordered by: standard name                                                                                                                                                                                       
                                                                                                                                                                                                                   
   ncalls  tottime  percall  cumtime  percall filename:lineno(function)                                                                                                                                            
        1    0.047    0.047    0.136    0.136 <string>:1(<module>)                                                                                                                                                 
   100000    0.079    0.000    0.089    0.000 typing.py:865(__new__)                                                                                                                                               
   100000    0.010    0.000    0.010    0.000 {built-in method __new__ of type object at 0x55ab65861ac0}                                                                                                           
        1    0.000    0.000    0.136    0.136 {built-in method builtins.exec}                                                                                                                                      
        1    0.000    0.000    0.000    0.000 {method 'disable' of '_lsprof.Profiler' objects}                                                                                                                     
                                                                                                                                                                                                                   
                                                                                                                                                                                                                   
                                                                                                                                                                                                                   
In [13]: # And typing.py:865 points to                                                                                                                                                                             
                                                                                                                                                                                                                   
In [14]: inspect.getsourcelines(Generic.__new__)                                                                                                                                                                   
Out[14]:                                                                                                                                                                                                           
(['    def __new__(cls, *args, **kwds):\n',                                                                                                                                                                        
  '        if cls in (Generic, Protocol):\n',                                                                                                                                                                      
  '            raise TypeError(f"Type {cls.__name__} cannot be instantiated; "\n',                                                                                                                                 
  '                            "it can be used only as a base class")\n',                                                                                                                                          
  '        if super().__new__ is object.__new__ and cls.__init__ is not object.__init__:\n',                                                                                                                       
  '            obj = super().__new__(cls)\n',                                                                                                                                                                      
  '        else:\n',                                                                                                                                                                                               
  '            obj = super().__new__(cls, *args, **kwds)\n',                                                                                                                                                       
  '        return obj\n'],                                                                                                                                                                                         
 865)