(original) (raw)

importlib could provide a parameterized decorator for functions that are the only consumers of an import. It could operate much like this:

def imps(mod):
� �def makewrap(f):
� � � �def wrapped(\*args, \*\*kwds):
� � � � � �print('first/only call to wrapper')
� � � � � �g = globals()
� � � � � �g\[mod\] = \_\_import\_\_(mod)
� � � � � �g\[f.\_\_name\_\_\] = f
� � � � � �f(\*args, \*\*kwds)
� � � �wrapped.\_\_name\_\_ = f.\_\_name\_\_
� � � �return wrapped
� �return makewrap

@imps('itertools')
def ic():
� �print(itertools.count)

ic()
ic()
#
first/only call to wrapper
<class 'itertools.count'>
<class 'itertools.count'>