annotate pytouhou/resource/loader.py @ 434:18e4b121646b

Move the common parts of EoSDGame outside, to not reallocate them at each stage.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Sun, 11 Aug 2013 14:30:52 +0200
parents c9433188ffdb
children 69c73023f7a0
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1 # -*- encoding: utf-8 -*-
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2 ##
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3 ## Copyright (C) 2012 Thibaut Girka <thib@sitedethib.com>
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4 ##
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5 ## This program is free software; you can redistribute it and/or modify
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6 ## it under the terms of the GNU General Public License as published
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7 ## by the Free Software Foundation; version 3 only.
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8 ##
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9 ## This program is distributed in the hope that it will be useful,
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10 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 ## GNU General Public License for more details.
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13 ##
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14
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15 import os
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16 from glob import glob
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17 from itertools import chain
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18 from io import BytesIO
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19
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20 from pytouhou.formats import WrongFormatError
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21 from pytouhou.formats.pbg3 import PBG3
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22 from pytouhou.formats.std import Stage
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23 from pytouhou.formats.ecl import ECL
282
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24 from pytouhou.formats.anm0 import ANM0
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25 from pytouhou.formats.msg import MSG
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26 from pytouhou.formats.sht import SHT
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27 from pytouhou.formats.exe import SHT as EoSDSHT, InvalidExeException
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28 from pytouhou.formats.music import Track
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29 from pytouhou.formats.fmt import FMT
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30
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31 from pytouhou.utils.helpers import get_logger
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32
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33 logger = get_logger(__name__)
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34
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35
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36
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37 class Directory(object):
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38 def __init__(self, path):
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39 self.path = path
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40
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41
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42 def __enter__(self):
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43 return self
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44
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45
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46 def __exit__(self, type, value, traceback):
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47 return False
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48
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49
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50 def list_files(self):
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51 file_list = []
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52 for path in os.listdir(self.path):
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53 if os.path.isfile(os.path.join(self.path, path)):
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54 file_list.append(path)
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55 return file_list
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56
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57
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58 def extract(self, name):
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59 with open(os.path.join(self.path, str(name)), 'rb') as file:
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60 contents = file.read()
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61 return contents
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62
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64
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65 class ArchiveDescription(object):
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66 _formats = {'PBG3': PBG3}
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67
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68 def __init__(self, path, format_class, file_list=None):
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69 self.path = path
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70 self.format_class = format_class
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71 self.file_list = file_list or []
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72
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73
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74 def open(self):
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75 if self.format_class is Directory:
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76 return self.format_class(self.path)
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77
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78 file = open(self.path, 'rb')
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79 instance = self.format_class.read(file)
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80 return instance
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81
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82
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83 @classmethod
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84 def get_from_path(cls, path):
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85 if os.path.isdir(path):
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86 instance = Directory(path)
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87 file_list = instance.list_files()
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88 return cls(path, Directory, file_list)
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89 with open(path, 'rb') as file:
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90 magic = file.read(4)
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91 file.seek(0)
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92 format_class = cls._formats[magic]
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93 instance = format_class.read(file)
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94 file_list = instance.list_files()
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95 return cls(path, format_class, file_list)
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96
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98
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99 class Loader(object):
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100 def __init__(self, game_dir=None):
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101 self.exe_files = []
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102 self.game_dir = game_dir
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103 self.known_files = {}
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104 self.instanced_anms = {} #TODO: remove it someday.
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105
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106
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107 def scan_archives(self, paths_lists):
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108 for paths in paths_lists:
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109 def _expand_paths():
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110 for path in paths.split(os.path.pathsep):
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111 if self.game_dir and not os.path.isabs(path):
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112 path = os.path.join(self.game_dir, path)
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113 yield glob(path)
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114 paths = list(chain(*_expand_paths()))
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115 if not paths:
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116 raise IOError
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117 path = paths[0]
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118 if os.path.splitext(path)[1] == '.exe':
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119 self.exe_files.extend(paths)
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120 else:
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121 archive_description = ArchiveDescription.get_from_path(path)
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122 for name in archive_description.file_list:
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123 self.known_files[name] = archive_description
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124
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125
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126 def get_file_data(self, name):
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127 with self.known_files[name].open() as archive:
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128 content = archive.extract(name)
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129 return content
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130
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131
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132 def get_file(self, name):
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133 with self.known_files[name].open() as archive:
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134 content = archive.extract(name)
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135 return BytesIO(content)
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136
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137
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138 def get_anm(self, name):
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139 if name not in self.instanced_anms:
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140 file = self.get_file(name)
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141 self.instanced_anms[name] = ANM0.read(file)
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142 return self.instanced_anms[name]
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143
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144
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145 def get_stage(self, name):
413
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146 file = self.get_file(name)
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147 return Stage.read(file) #TODO: modular
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148
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149
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150 def get_ecl(self, name):
413
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151 file = self.get_file(name)
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152 return ECL.read(file) #TODO: modular
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153
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154
133
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155 def get_msg(self, name):
413
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156 file = self.get_file(name)
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157 return MSG.read(file) #TODO: modular
133
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158
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159
220
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160 def get_sht(self, name):
413
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161 file = self.get_file(name)
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162 return SHT.read(file) #TODO: modular
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163
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164
262
8fa660da5f0c Automatically search data files using different names.
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165 def get_eosd_characters(self):
231
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166 #TODO: Move to pytouhou.games.eosd?
298
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167 for path in self.exe_files:
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168 try:
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169 with open(path, 'rb') as file:
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170 characters = EoSDSHT.read(file)
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171 return characters
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172 except InvalidExeException:
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173 pass
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174 logger.error("Required game exe not found!")
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175
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176
321
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177 def get_track(self, name):
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178 posname = name.replace('bgm/', '').replace('.mid', '.pos')
413
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179 file = self.get_file(posname)
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180 return Track.read(file) #TODO: modular
321
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181
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182
325
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183 def get_fmt(self, name):
413
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184 file = self.get_file(name)
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185 return FMT.read(file) #TODO: modular
325
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186
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187
430
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188 def get_single_anm(self, name):
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189 """Hack for EoSD, since it doesn’t support multi-entries ANMs."""
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190 anm = self.get_anm(name)
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191 assert len(anm) == 1
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192 return anm[0]
97
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193
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194
430
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195 def get_multi_anm(self, names):
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196 """Hack for EoSD, since it doesn’t support multi-entries ANMs."""
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197 return sum((self.get_anm(name) for name in names), [])