core_shell_microgelscostrafo411magnetic_modelrelease_v0.94release_v0.95ticket-1257-vesicle-productticket_1156ticket_1265_superballticket_822_more_unit_tests
Last change
on this file since 9fd094c was
0763009,
checked in by Paul Kienzle <pkienzle@…>, 9 years ago
|
minor code cleanup
|
-
Property mode set to
100644
|
File size:
1.2 KB
|
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1 | """ |
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2 | Utility to add annotations to python exceptions. |
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3 | """ |
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4 | |
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5 | # Platform cruft: WindowsError is only defined on Windows. |
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6 | try: |
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7 | WindowsError |
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8 | except NameError: |
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9 | class WindowsError(Exception): |
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10 | pass |
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11 | |
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12 | def annotate_exception(exc, msg): |
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13 | """ |
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14 | Add an annotation to the current exception, which can then be forwarded |
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15 | to the caller using a bare "raise" statement to reraise the annotated |
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16 | exception. |
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17 | Example:: |
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18 | >>> D = {} |
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19 | >>> try: |
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20 | ... print D['hello'] |
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21 | ... except Exception,exc: |
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22 | ... annotate_exception(exc, "while accessing 'D'") |
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23 | ... raise |
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24 | Traceback (most recent call last): |
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25 | ... |
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26 | KeyError: "hello while accessing 'D'" |
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27 | """ |
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28 | # Can't extend WindowsError exceptions; instead raise a new exception. |
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29 | # TODO: try to incorporate current stack trace in the raised exception |
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30 | if isinstance(exc, WindowsError): |
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31 | raise OSError(str(exc)+msg) |
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32 | |
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33 | args = exc.args |
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34 | if not args: |
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35 | exc.args = (msg,) |
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36 | else: |
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37 | try: |
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38 | arg0 = " ".join((args[0],msg)) |
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39 | exc.args = tuple([arg0] + list(args[1:])) |
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40 | except: |
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41 | exc.args = (" ".join((str(exc),msg)),) |
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