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annotate env/lib/python3.9/site-packages/gxformat2/yaml.py @ 0:4f3585e2f14b draft default tip

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"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author shellac
date Mon, 22 Mar 2021 18:12:50 +0000
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1 """YAML loading utilities for gxformat2."""
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2 from collections import OrderedDict
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3
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4 try:
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5 from galaxy.model.custom_types import MutationDict # type: ignore
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6 except ImportError:
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7 MutationDict = None
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8 import yaml
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9
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11 def ordered_load_path(path: str, **kwds):
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12 """Safe and ordered load of YAML from specified path."""
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13 with open(path, "r") as f:
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14 return ordered_load(f, **kwds)
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15
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16
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17 def ordered_load(stream, Loader=yaml.SafeLoader, **kwds):
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18 """Safe and ordered load of YAML from stream."""
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19 class OrderedLoader(Loader):
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20 pass
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21
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22 def construct_mapping(loader, node):
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23 loader.flatten_mapping(node)
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24 return OrderedDict(loader.construct_pairs(node))
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25
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26 OrderedLoader.add_constructor(
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27 yaml.resolver.BaseResolver.DEFAULT_MAPPING_TAG,
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28 construct_mapping)
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29
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30 return yaml.load(stream, OrderedLoader, **kwds)
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31
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32
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33 def ordered_dump(data, stream=None, Dumper=yaml.SafeDumper, **kwds):
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34 """Safe and ordered dump of YAML to stream."""
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35 class OrderedDumper(Dumper):
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36 pass
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37
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38 def _dict_representer(dumper, data):
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39 return dumper.represent_mapping(
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40 yaml.resolver.BaseResolver.DEFAULT_MAPPING_TAG,
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41 list(data.items()))
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42 OrderedDumper.add_representer(OrderedDict, _dict_representer)
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43 if MutationDict is not None:
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44 OrderedDumper.add_representer(MutationDict, _dict_representer)
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45
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46 return yaml.dump(data, stream, OrderedDumper, **kwds)
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47
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48
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49 def ordered_dump_to_path(as_dict: dict, path: str):
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50 """Safe and ordered dump of YAML to path."""
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51 with open(path, "w") as f:
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52 ordered_dump(as_dict, f)
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53
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54
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55 __all__ = (
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56 'ordered_dump',
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57 'ordered_dump_to_path',
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58 'ordered_load',
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59 'ordered_load_path',
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60 )