40ad8f1666
This is consistent with the other 'micro' modules and allows implementing additional features in Python via e.g. micropython-lib's sys. Note this is a breaking change (not backwards compatible) for ports which do not enable weak links, as "import sys" must now be replaced with "import usys".
44 lines
892 B
Python
44 lines
892 B
Python
# test that we can generate a traceback without allocating
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import micropython
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import usys
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try:
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import uio
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except ImportError:
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print("SKIP")
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raise SystemExit
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# preallocate exception instance with some room for a traceback
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global_exc = StopIteration()
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try:
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raise global_exc
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except:
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pass
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def test():
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micropython.heap_lock()
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global global_exc
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global_exc.__traceback__ = None
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try:
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raise global_exc
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except StopIteration:
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print("StopIteration")
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micropython.heap_unlock()
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# call test() with heap allocation disabled
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test()
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# print the exception that was raised
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buf = uio.StringIO()
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usys.print_exception(global_exc, buf)
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for l in buf.getvalue().split("\n"):
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# uPy on pyboard prints <stdin> as file, so remove filename.
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if l.startswith(" File "):
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l = l.split('"')
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print(l[0], l[2])
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else:
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print(l)
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