Mercurial > repos > shellac > sam_consensus_v3
annotate env/lib/python3.9/site-packages/attr/filters.py @ 0:4f3585e2f14b draft default tip
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author | shellac |
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date | Mon, 22 Mar 2021 18:12:50 +0000 |
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1 """ |
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2 Commonly useful filters for `attr.asdict`. |
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3 """ |
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4 |
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5 from __future__ import absolute_import, division, print_function |
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6 |
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7 from ._compat import isclass |
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8 from ._make import Attribute |
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9 |
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10 |
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11 def _split_what(what): |
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12 """ |
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13 Returns a tuple of `frozenset`s of classes and attributes. |
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14 """ |
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15 return ( |
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16 frozenset(cls for cls in what if isclass(cls)), |
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17 frozenset(cls for cls in what if isinstance(cls, Attribute)), |
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18 ) |
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19 |
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20 |
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21 def include(*what): |
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22 """ |
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23 Whitelist *what*. |
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24 |
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25 :param what: What to whitelist. |
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26 :type what: `list` of `type` or `attr.Attribute`\\ s |
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27 |
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28 :rtype: `callable` |
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29 """ |
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30 cls, attrs = _split_what(what) |
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31 |
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32 def include_(attribute, value): |
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33 return value.__class__ in cls or attribute in attrs |
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34 |
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35 return include_ |
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36 |
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37 |
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38 def exclude(*what): |
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39 """ |
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40 Blacklist *what*. |
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41 |
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42 :param what: What to blacklist. |
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43 :type what: `list` of classes or `attr.Attribute`\\ s. |
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44 |
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45 :rtype: `callable` |
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46 """ |
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47 cls, attrs = _split_what(what) |
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48 |
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49 def exclude_(attribute, value): |
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50 return value.__class__ not in cls and attribute not in attrs |
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51 |
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52 return exclude_ |