call site 9 for code.compile
magic/testing/test_invoke.py - line 22
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   def test_invoke_compile():
       py.magic.invoke(compile=True)
       try:
           co = compile("""if 1: 
                       def f(): 
                           return 1
->                     \n""", '', 'exec')
           d = {}
           exec co in d
           assert py.code.Source(d['f']) 
       finally:
           py.magic.revoke(compile=True)