annotate env/lib/python3.7/site-packages/oyaml.py @ 0:26e78fe6e8c4 draft

"planemo upload commit c699937486c35866861690329de38ec1a5d9f783"
author shellac
date Sat, 02 May 2020 07:14:21 -0400
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1 import platform
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2 import sys
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3 from collections import OrderedDict
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4
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5 import yaml as pyyaml
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6
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7
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8 _items = "viewitems" if sys.version_info < (3,) else "items"
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9 _std_dict_is_order_preserving = sys.version_info >= (3, 7) or (
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10 sys.version_info >= (3, 6) and platform.python_implementation() == "CPython"
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11 )
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12
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13
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14 def map_representer(dumper, data):
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15 return dumper.represent_dict(getattr(data, _items)())
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16
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17
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18 def map_constructor(loader, node):
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19 loader.flatten_mapping(node)
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20 pairs = loader.construct_pairs(node)
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21 try:
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22 return OrderedDict(pairs)
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23 except TypeError:
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24 loader.construct_mapping(node) # trigger any contextual error
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25 raise
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26
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27
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28 if pyyaml.safe_dump is pyyaml.dump:
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29 # PyYAML v4.x
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30 SafeDumper = pyyaml.dumper.Dumper
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31 DangerDumper = pyyaml.dumper.DangerDumper
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32 else:
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33 SafeDumper = pyyaml.dumper.SafeDumper
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34 DangerDumper = pyyaml.dumper.Dumper
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35
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36 pyyaml.add_representer(dict, map_representer, Dumper=SafeDumper)
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37 pyyaml.add_representer(OrderedDict, map_representer, Dumper=SafeDumper)
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38 pyyaml.add_representer(dict, map_representer, Dumper=DangerDumper)
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39 pyyaml.add_representer(OrderedDict, map_representer, Dumper=DangerDumper)
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40
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41
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42 Loader = None
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43 if not _std_dict_is_order_preserving:
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44 for loader_name in pyyaml.loader.__all__:
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45 Loader = getattr(pyyaml.loader, loader_name)
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46 pyyaml.add_constructor("tag:yaml.org,2002:map", map_constructor, Loader=Loader)
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47
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48
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49 # Merge PyYAML namespace into ours.
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50 # This allows users a drop-in replacement:
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51 # import oyaml as yaml
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52 del map_constructor, map_representer, SafeDumper, DangerDumper, Loader
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53 from yaml import *