adii1823
39 lines
920 B
Python
39 lines
920 B
Python
# context/generator.py
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from contextlib import contextmanager
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@contextmanager
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def my_context_manager():
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print("Entering 'with' context")
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val = object()
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print(id(val))
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try:
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yield val
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except Exception as e:
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print(f"{type(e)=} {e=} {e.__traceback__=}")
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finally:
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print("Exiting 'with' context")
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print("About to enter 'with' context")
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with my_context_manager() as val:
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print("Inside 'with' context")
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print(id(val))
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raise Exception("Exception inside 'with' context")
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print("This line will never be reached")
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print("After 'with' context")
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"""
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$ python context/generator.py
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About to enter 'with' context
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Entering 'with' context
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139768531985040
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Inside 'with' context
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139768531985040
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type(e)=<class 'Exception'> e=Exception("Exception inside 'with'
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context") e.__traceback__=<traceback object at 0x7f1e65a42800>
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Exiting 'with' context
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After 'with' context
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"""
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