kopia lustrzana https://github.com/micropython/micropython
py/vm: Don't emit warning when using "raise ... from None".
"Raise SomeException() from None" is a common Python idiom to suppress chained exceptions and thus shouldn't trigger a warning on a version of Python that doesn't support them in the first place.pull/12621/head
rodzic
5232847771
commit
3fb1bb131f
6
py/vm.c
6
py/vm.c
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@ -1171,8 +1171,10 @@ unwind_return:
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ENTRY(MP_BC_RAISE_FROM): {
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MARK_EXC_IP_SELECTIVE();
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mp_warning(NULL, "exception chaining not supported");
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sp--; // ignore (pop) "from" argument
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mp_obj_t from_value = POP();
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if (from_value != mp_const_none) {
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mp_warning(NULL, "exception chaining not supported");
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}
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mp_obj_t obj = mp_make_raise_obj(TOP());
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RAISE(obj);
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}
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@ -1,6 +1,15 @@
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# Exception chaining is not supported, but check that basic
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# exception works as expected.
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try:
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raise Exception from None
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except Exception:
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print("Caught Exception")
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try:
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try:
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raise ValueError("Value")
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except Exception as exc:
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raise RuntimeError("Runtime") from exc
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except Exception as ex2:
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print("Caught Exception:", ex2)
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@ -1,2 +1,3 @@
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Warning: exception chaining not supported
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Caught Exception
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Warning: exception chaining not supported
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Caught Exception: Runtime
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