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annotate piecrust/dataproviders/blog.py @ 1080:d464c1b1d686

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data: Fix debug rendering of the blog data provider.
author Ludovic Chabant <ludovic@chabant.com>
date Thu, 15 Feb 2018 21:15:49 -0800
parents 57283302b3ee
children c5f1936e9e89
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 import time
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2 from piecrust.dataproviders.base import DataProvider
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3 from piecrust.dataproviders.pageiterator import PageIterator
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4 from piecrust.sources.list import ListSource
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5 from piecrust.sources.taxonomy import Taxonomy
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6
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7
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8 class BlogDataProvider(DataProvider):
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9 PROVIDER_NAME = 'blog'
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10
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11 debug_render_doc = """Provides a list of blog posts and yearly/monthly
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12 archives."""
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13 debug_render_dynamic = (['_debugRenderTaxonomies'] +
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14 DataProvider.debug_render_dynamic)
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15
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16 def __init__(self, source, page):
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17 super().__init__(source, page)
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18 self._posts = None
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19 self._yearly = None
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20 self._monthly = None
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21 self._taxonomies = {}
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22 self._archives_built = False
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23 self._ctx_set = False
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24
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25 def _addSource(self, source):
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26 raise Exception("The blog data provider doesn't support "
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27 "combining multiple sources.")
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28
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29 @property
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30 def posts(self):
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31 self._buildPosts()
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32 # Reset each time on access in case a page is showing 2 different
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33 # lists of the same blog.
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34 self._posts.reset()
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35 return self._posts
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36
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37 @property
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38 def years(self):
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39 self._buildArchives()
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40 return self._yearly
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41
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42 @property
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43 def months(self):
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44 self._buildArchives()
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45 return self._montly
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46
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47 @property
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48 def taxonomies(self):
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49 return list(self._app.config.get('site/taxonomies').keys())
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50
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51 def __getitem__(self, name):
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52 self._buildArchives()
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53 return self._taxonomies[name]
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54
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55 def __getattr__(self, name):
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56 self._buildArchives()
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57 try:
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58 return self._taxonomies[name]
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59 except KeyError:
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60 raise AttributeError("No such taxonomy: %s" % name)
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61
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62 def _debugRenderTaxonomies(self):
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63 return self.taxonomies
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64
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65 def _buildPosts(self):
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66 if self._posts is None:
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67 it = PageIterator(self._sources[0], current_page=self._page)
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68 self._onIteration()
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69 self._posts = it
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70
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71 def _buildArchives(self):
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72 if self._archives_built:
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73 return
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74
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75 yearly_index = {}
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76 monthly_index = {}
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77 tax_index = {}
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78
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79 taxonomies = []
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80 tax_names = list(self._app.config.get('site/taxonomies').keys())
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81 for tn in tax_names:
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82 tax_cfg = self._app.config.get('site/taxonomies/' + tn)
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83 taxonomies.append(Taxonomy(tn, tax_cfg))
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84 tax_index[tn] = {}
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85
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86 page = self._page
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87 source = self._sources[0]
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88
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89 for post in source.getAllPages():
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90 post_dt = post.datetime
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91
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92 year = post_dt.year
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93 month = (post_dt.month, post_dt.year)
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94
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95 posts_this_year = yearly_index.get(year)
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96 if posts_this_year is None:
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97 timestamp = time.mktime(
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98 (post_dt.year, 1, 1, 0, 0, 0, 0, 0, -1))
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99 posts_this_year = BlogArchiveEntry(
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100 source, page, year, timestamp)
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101 yearly_index[year] = posts_this_year
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102 posts_this_year._items.append(post.content_item)
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103
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104 posts_this_month = monthly_index.get(month)
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105 if posts_this_month is None:
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106 timestamp = time.mktime(
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107 (post_dt.year, post_dt.month, 1,
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108 0, 0, 0, 0, 0, -1))
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109 posts_this_month = BlogArchiveEntry(
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110 source, page, month[0], timestamp)
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111 monthly_index[month] = posts_this_month
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112 posts_this_month._items.append(post.content_item)
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113
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114 for tax in taxonomies:
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115 post_term = post.config.get(tax.setting_name)
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116 if post_term is None:
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117 continue
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118
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119 posts_this_tax = tax_index[tax.name]
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120 if tax.is_multiple:
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121 for val in post_term:
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122 entry = posts_this_tax.get(val)
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123 if entry is None:
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124 entry = BlogTaxonomyEntry(source, page, val)
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125 posts_this_tax[val] = entry
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126 entry._items.append(post.content_item)
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127 else:
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128 entry = posts_this_tax.get(val)
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129 if entry is None:
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130 entry = BlogTaxonomyEntry(source, page, post_term)
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131 posts_this_tax[val] = entry
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132 entry._items.append(post.content_item)
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133
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134 self._yearly = list(sorted(
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135 yearly_index.values(),
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136 key=lambda e: e.timestamp, reverse=True))
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137 self._monthly = list(sorted(
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138 monthly_index.values(),
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139 key=lambda e: e.timestamp, reverse=True))
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140
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141 self._taxonomies = {}
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142 for tax_name, entries in tax_index.items():
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143 self._taxonomies[tax_name] = list(
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144 sorted(entries.values(), key=lambda i: i.term))
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145
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146 self._onIteration()
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147
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148 self._archives_built = True
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149
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150 def _onIteration(self):
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151 if not self._ctx_set:
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152 rcs = self._app.env.render_ctx_stack
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153 if rcs.current_ctx:
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154 rcs.current_ctx.addUsedSource(self._sources[0])
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155 self._ctx_set = True
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156
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157
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158 class BlogArchiveEntry:
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159 debug_render = ['name', 'timestamp', 'posts']
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160 debug_render_invoke = ['name', 'timestamp', 'posts']
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161
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162 def __init__(self, source, page, name, timestamp):
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163 self.name = name
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164 self.timestamp = timestamp
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165 self._source = source
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166 self._page = page
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167 self._items = []
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168 self._iterator = None
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169
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170 def __str__(self):
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171 return str(self.name)
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172
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173 def __int__(self):
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174 return int(self.name)
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175
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176 @property
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177 def posts(self):
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178 self._load()
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179 self._iterator.reset()
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180 return self._iterator
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181
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182 def _load(self):
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183 if self._iterator is not None:
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184 return
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185
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186 src = ListSource(self._source, self._items)
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187 self._iterator = PageIterator(src, current_page=self._page)
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188
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189
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190 class BlogTaxonomyEntry:
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191 debug_render = ['name', 'post_count', 'posts']
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192 debug_render_invoke = ['name', 'post_count', 'posts']
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193
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194 def __init__(self, source, page, term):
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195 self.term = term
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196 self._source = source
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197 self._page = page
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198 self._items = []
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199 self._iterator = None
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200
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201 def __str__(self):
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202 return self.term
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203
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204 @property
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205 def name(self):
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206 return self.term
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207
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208 @property
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209 def posts(self):
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210 self._load()
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211 self._iterator.reset()
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212 return self._iterator
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213
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214 @property
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215 def post_count(self):
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216 return len(self._items)
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217
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218 def _load(self):
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219 if self._iterator is not None:
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220 return
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221
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222 src = ListSource(self._source, self._items)
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223 self._iterator = PageIterator(src, current_page=self._page)
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224