1 | #-*- coding: utf-8 -*-
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2 | import datetime
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3 | import email
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4 | import json
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5 | import os
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6 | import sys
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7 | import threading
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8 | import time
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9 | import traceback
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10 | import urlparse
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11 |
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12 | import feedparser
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13 | import requests
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14 |
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15 | class Telegram:
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16 | class API:
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17 | URL = 'https://api.telegram.org/bot<token>/<method>'
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18 |
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19 | def __init__(self, token, method, http_method='POST'):
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20 | self.token = token
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21 | self.method = method
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22 | self.http_method = http_method.upper()
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23 | self.param = {}
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24 |
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25 | def setParam(self, **kwargs):
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26 | self.param.update(kwargs)
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27 | return self
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28 |
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29 | @property
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30 | def url(self):
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31 | ret = Telegram.API.URL.replace('<token>', self.token).replace('<method>', self.method)
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32 | return ret
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33 |
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34 | @property
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35 | def header(self):
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36 | header = {
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37 | 'accept': 'application/x-www-form-urlencoded',
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38 | }
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39 | return header
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40 |
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41 | def __init__(self, token):
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42 | self.token = token
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43 | self.chatId = self.getUpdates(limit=1)['result'][0]['message']['chat']['id']
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44 |
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45 | def request(self, api):
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46 | if api.http_method == 'GET':
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47 | req = requests.get(api.url, headers=api.header, params=api.param)
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48 | else:# if api.http_method == 'POST':
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49 | req = requests.get(api.url, headers=api.header, data=api.param)
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50 |
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51 | response = req.json()
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52 |
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53 | if not response['ok']:
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54 | raise Exception(response['description'])
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55 |
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56 | return response
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57 |
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58 | def getUpdates(self, limit=None):
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59 | api = Telegram.API(token=self.token, method='getUpdates', http_method='GET')
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60 |
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61 | if limit:
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62 | api.setParam(limit=limit)
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63 |
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64 | return self.request(api)
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65 |
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66 | def sendMessage(self, text):
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67 | api = Telegram.API(token=self.token, method='sendMessage').setParam(chat_id=self.chatId, text=text)
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68 | return self.request(api)
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69 |
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70 | class Feed:
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71 | def __init__(self, url):
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72 | self.url = url
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73 | self.etag = None
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74 | self.modified = None
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75 | self.feed = None
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76 |
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77 | self.save_dir = '.changes'
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78 |
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79 | if os.path.isfile(self.filepath):
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80 | self.load()
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81 |
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82 | @property
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83 | def filepath(self):
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84 | domain = urlparse.urlparse(self.url).netloc
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85 | return os.path.join(self.save_dir, domain)
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86 |
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87 | def save(self):
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88 | data = {
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89 | 'url': self.url,
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90 | 'etag': self.etag,
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91 | 'modified': self.modified
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92 | }
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93 | jsonstr = json.dumps(data, indent=2)
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94 |
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95 | if not os.path.isdir(self.save_dir):
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96 | os.makedirs(self.save_dir)
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97 |
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98 | with open(self.filepath, 'w') as f:
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99 | f.write(jsonstr)
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100 |
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101 | def load(self):
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102 | with open(self.filepath, 'r') as f:
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103 | jsonobj = json.load(f)
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104 |
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105 | self.etag = jsonobj['etag']
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106 | self.modified = jsonobj['modified']
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107 |
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108 | def get(self):
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109 | self.feed = feedparser.parse(self.url, etag=self.etag, modified=self.modified)
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110 |
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111 | self.etag = self.feed.etag
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112 | self.modified = self.feed.modified
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113 |
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114 | return self.feed
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115 |
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116 | class Datetime:
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117 | def __init__(self):
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118 | self.datetime = None
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119 |
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120 | def setRfc2822(self, value):
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121 | parsed = email.utils.parsedate(value)
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122 | self.datetime = datetime.datetime(*parsed[:6])
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123 | return self
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124 |
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125 | def toTimestamp(self):
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126 | timetuple = self.datetime.timetuple()
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127 | return time.mktime(timetuple)
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128 |
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129 | class Feed2Telegram:
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130 | def __init__(self,
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131 | feed_url, # required
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132 | telegram_token, # required
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133 | callback_get_message, # required
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134 | callback_get_entries=lambda entries: entries,
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135 | check_interval=60*60,
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136 | new_entries_only=False,
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137 | send_error=True,
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138 | continue_on_error=False,
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139 | threaded=False):
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140 | self.url = feed_url
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141 | self.feed = Feed(self.url)
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142 |
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143 | self.token = telegram_token
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144 | self.telegram = Telegram(self.token)
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145 |
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146 | self.get_message = callback_get_message
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147 | self.get_entries = callback_get_entries
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148 |
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149 | self.new_entries_only = new_entries_only
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150 | self.send_error = send_error
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151 | self.continue_on_error = continue_on_error
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152 |
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153 | self.thread = None
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154 | if threaded:
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155 | self.thread = threading.Thread(target=self.run)
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156 |
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157 | self.stop_event = threading.Event()
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158 | self.last_modified = None
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159 |
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160 | def isSendingEntry(self, entry):
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161 | if self.new_entries_only and self.last_modified:
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162 | published = Datetime().setRfc2822(entry.published).toTimestamp()
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163 | last = Datetime().setRfc2822(self.last_modified).toTimestamp()
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164 |
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165 | if published > last:
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166 | return True
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167 |
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168 | return False
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169 |
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170 | def run(self):
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171 | while not self.stop_event.is_set():
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172 | try:
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173 | self.last_modified = self.feed.modified
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174 | feed = self.feed.get()
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175 |
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176 | for entry in self.get_entries(feed.entries):
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177 | if self.stop_event.is_set():
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178 | break
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179 |
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180 | if not self.isSendingEntry(entry):
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181 | continue
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182 |
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183 | message = self.get_message(entry)
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184 | self.telegram.sendMessage(message)
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185 |
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186 | self.feed.save()
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187 |
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188 | except:
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189 | if self.send_error:
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190 | e = traceback.format_exc()
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191 | sys.stderr.write(e)
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192 | self.telegram.sendMessage(e)
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193 |
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194 | if not self.continue_on_error:
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195 | raise
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196 |
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197 | finally:
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198 | if not self.stop_event.is_set() and self.continue_on_error:
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199 | self.stop_event.wait(60 * 60)
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200 |
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201 | def start(self):
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202 | self.stop_event.clear()
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203 |
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204 | if self.thread:
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205 | self.thread.run()
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206 | else:
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207 | self.run()
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208 |
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209 | def join(self, timeout=None):
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210 | if self.thread:
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211 | self.thread.join(timeout)
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212 |
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213 | def stop(self):
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214 | self.stop_event.set()
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215 |
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