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21 <body><a NAME="top" ID="top"></a> |
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22 <h1>eric6.Plugins.CheckerPlugins.Tabnanny.Tabnanny</h1> |
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23 <p> |
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24 The Tab Nanny despises ambiguous indentation. She knows no mercy. |
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25 </p><p> |
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26 tabnanny -- Detection of ambiguous indentation |
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27 </p><p> |
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28 For the time being this module is intended to be called as a script. |
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29 However it is possible to import it into an IDE and use the function |
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30 check() described below. |
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31 </p><p> |
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32 Warning: The API provided by this module is likely to change in future |
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33 releases; such changes may not be backward compatible. |
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34 </p><p> |
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35 This is a modified version to make the original tabnanny better suitable |
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36 for being called from within the eric6 IDE. |
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37 </p><dl> |
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38 <dt>Raises <b>ValueError</b>:</dt> |
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39 <dd> |
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40 The tokenize module is too old. |
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41 </dd> |
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42 </dl> |
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43 <h3>Global Attributes</h3> |
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44 <table> |
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45 <tr><td>__all__</td></tr><tr><td>__version__</td></tr> |
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46 </table> |
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47 <h3>Classes</h3> |
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48 <table> |
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49 <tr> |
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50 <td><a href="#NannyNag">NannyNag</a></td> |
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51 <td>Class implementing an exception for indentation issues.</td> |
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52 </tr><tr> |
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53 <td><a href="#Whitespace">Whitespace</a></td> |
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54 <td>Class implementing the whitespace checker.</td> |
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55 </tr> |
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56 </table> |
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57 <h3>Functions</h3> |
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58 <table> |
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59 <tr> |
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60 <td><a href="#check">check</a></td> |
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61 <td>Private function to check one Python source file for whitespace related problems.</td> |
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62 </tr><tr> |
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63 <td><a href="#format_witnesses">format_witnesses</a></td> |
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64 <td>Function to format the witnesses as a readable string.</td> |
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65 </tr><tr> |
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66 <td><a href="#initService">initService</a></td> |
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67 <td>Initialize the service and return the entry point.</td> |
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68 </tr><tr> |
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69 <td><a href="#process_tokens">process_tokens</a></td> |
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70 <td>Function processing all tokens generated by a tokenizer run.</td> |
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71 </tr> |
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72 </table> |
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73 <hr /><hr /> |
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74 <a NAME="NannyNag" ID="NannyNag"></a> |
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75 <h2>NannyNag</h2> |
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76 <p> |
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77 Class implementing an exception for indentation issues. |
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78 </p><p> |
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79 Raised by tokeneater() if detecting an ambiguous indent. |
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80 Captured and handled in check(). |
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81 </p> |
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82 <h3>Derived from</h3> |
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83 Exception |
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84 <h3>Class Attributes</h3> |
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85 <table> |
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86 <tr><td>None</td></tr> |
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87 </table> |
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88 <h3>Class Methods</h3> |
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89 <table> |
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90 <tr><td>None</td></tr> |
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91 </table> |
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92 <h3>Methods</h3> |
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93 <table> |
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94 <tr> |
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95 <td><a href="#NannyNag.__init__">NannyNag</a></td> |
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96 <td>Constructor</td> |
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97 </tr><tr> |
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98 <td><a href="#NannyNag.get_line">get_line</a></td> |
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99 <td>Public method to retrieve the offending line.</td> |
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100 </tr><tr> |
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101 <td><a href="#NannyNag.get_lineno">get_lineno</a></td> |
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102 <td>Public method to retrieve the line number.</td> |
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103 </tr><tr> |
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104 <td><a href="#NannyNag.get_msg">get_msg</a></td> |
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105 <td>Public method to retrieve the message.</td> |
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106 </tr> |
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107 </table> |
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108 <h3>Static Methods</h3> |
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109 <table> |
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110 <tr><td>None</td></tr> |
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111 </table> |
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112 <a NAME="NannyNag.__init__" ID="NannyNag.__init__"></a> |
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113 <h4>NannyNag (Constructor)</h4> |
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114 <b>NannyNag</b>(<i>lineno, msg, line</i>) |
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115 <p> |
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116 Constructor |
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117 </p><dl> |
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118 <dt><i>lineno</i></dt> |
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119 <dd> |
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120 Line number of the ambiguous indent. |
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121 </dd><dt><i>msg</i></dt> |
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122 <dd> |
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123 Descriptive message assigned to this problem. |
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124 </dd><dt><i>line</i></dt> |
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125 <dd> |
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126 The offending source line. |
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127 </dd> |
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128 </dl><a NAME="NannyNag.get_line" ID="NannyNag.get_line"></a> |
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129 <h4>NannyNag.get_line</h4> |
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130 <b>get_line</b>(<i></i>) |
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131 <p> |
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132 Public method to retrieve the offending line. |
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133 </p><dl> |
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134 <dt>Returns:</dt> |
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135 <dd> |
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136 The line of code (string) |
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137 </dd> |
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138 </dl><a NAME="NannyNag.get_lineno" ID="NannyNag.get_lineno"></a> |
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139 <h4>NannyNag.get_lineno</h4> |
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140 <b>get_lineno</b>(<i></i>) |
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141 <p> |
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142 Public method to retrieve the line number. |
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143 </p><dl> |
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144 <dt>Returns:</dt> |
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145 <dd> |
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146 The line number (integer) |
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147 </dd> |
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148 </dl><a NAME="NannyNag.get_msg" ID="NannyNag.get_msg"></a> |
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149 <h4>NannyNag.get_msg</h4> |
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150 <b>get_msg</b>(<i></i>) |
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151 <p> |
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152 Public method to retrieve the message. |
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153 </p><dl> |
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154 <dt>Returns:</dt> |
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155 <dd> |
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156 The error message (string) |
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157 </dd> |
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158 </dl> |
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159 <div align="right"><a href="#top">Up</a></div> |
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160 <hr /><hr /> |
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161 <a NAME="Whitespace" ID="Whitespace"></a> |
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162 <h2>Whitespace</h2> |
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163 <p> |
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164 Class implementing the whitespace checker. |
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165 </p> |
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166 <h3>Derived from</h3> |
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167 object |
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168 <h3>Class Attributes</h3> |
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169 <table> |
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170 <tr><td>None</td></tr> |
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171 </table> |
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172 <h3>Class Methods</h3> |
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173 <table> |
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174 <tr><td>None</td></tr> |
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175 </table> |
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176 <h3>Methods</h3> |
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177 <table> |
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178 <tr> |
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179 <td><a href="#Whitespace.__init__">Whitespace</a></td> |
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180 <td>Constructor</td> |
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181 </tr><tr> |
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182 <td><a href="#Whitespace.equal">equal</a></td> |
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183 <td>Public method to compare the indentation levels of two Whitespace objects for equality.</td> |
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184 </tr><tr> |
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185 <td><a href="#Whitespace.indent_level">indent_level</a></td> |
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186 <td>Public method to determine the indentation level.</td> |
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187 </tr><tr> |
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188 <td><a href="#Whitespace.less">less</a></td> |
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189 <td>Public method to compare the indentation level against another Whitespace objects to be smaller.</td> |
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190 </tr><tr> |
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191 <td><a href="#Whitespace.longest_run_of_spaces">longest_run_of_spaces</a></td> |
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192 <td>Public method to calculate the length of longest contiguous run of spaces.</td> |
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193 </tr><tr> |
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194 <td><a href="#Whitespace.not_equal_witness">not_equal_witness</a></td> |
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195 <td>Public method to calculate a tuple of witnessing tab size.</td> |
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196 </tr><tr> |
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197 <td><a href="#Whitespace.not_less_witness">not_less_witness</a></td> |
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198 <td>Public method to calculate a tuple of witnessing tab size.</td> |
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199 </tr> |
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200 </table> |
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201 <h3>Static Methods</h3> |
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202 <table> |
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203 <tr><td>None</td></tr> |
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204 </table> |
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205 <a NAME="Whitespace.__init__" ID="Whitespace.__init__"></a> |
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206 <h4>Whitespace (Constructor)</h4> |
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207 <b>Whitespace</b>(<i>ws</i>) |
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208 <p> |
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209 Constructor |
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210 </p><dl> |
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211 <dt><i>ws</i></dt> |
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212 <dd> |
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213 The string to be checked. |
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214 </dd> |
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215 </dl><a NAME="Whitespace.equal" ID="Whitespace.equal"></a> |
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216 <h4>Whitespace.equal</h4> |
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217 <b>equal</b>(<i>other</i>) |
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218 <p> |
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219 Public method to compare the indentation levels of two Whitespace |
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220 objects for equality. |
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221 </p><dl> |
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222 <dt><i>other</i></dt> |
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223 <dd> |
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224 Whitespace object to compare against. |
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225 </dd> |
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226 </dl><dl> |
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227 <dt>Returns:</dt> |
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228 <dd> |
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229 True, if we compare equal against the other Whitespace object. |
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230 </dd> |
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231 </dl><a NAME="Whitespace.indent_level" ID="Whitespace.indent_level"></a> |
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232 <h4>Whitespace.indent_level</h4> |
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233 <b>indent_level</b>(<i>tabsize</i>) |
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234 <p> |
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235 Public method to determine the indentation level. |
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236 </p><dl> |
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237 <dt><i>tabsize</i></dt> |
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238 <dd> |
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239 The length of a tab stop. (integer) |
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240 </dd> |
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241 </dl><dl> |
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242 <dt>Returns:</dt> |
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243 <dd> |
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244 indentation level (integer) |
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245 </dd> |
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246 </dl><a NAME="Whitespace.less" ID="Whitespace.less"></a> |
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247 <h4>Whitespace.less</h4> |
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248 <b>less</b>(<i>other</i>) |
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249 <p> |
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250 Public method to compare the indentation level against another |
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251 Whitespace objects to be smaller. |
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252 </p><dl> |
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253 <dt><i>other</i></dt> |
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254 <dd> |
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255 Whitespace object to compare against. |
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256 </dd> |
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257 </dl><dl> |
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258 <dt>Returns:</dt> |
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259 <dd> |
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260 True, if we compare less against the other Whitespace object. |
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261 </dd> |
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262 </dl><a NAME="Whitespace.longest_run_of_spaces" ID="Whitespace.longest_run_of_spaces"></a> |
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263 <h4>Whitespace.longest_run_of_spaces</h4> |
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264 <b>longest_run_of_spaces</b>(<i></i>) |
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265 <p> |
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266 Public method to calculate the length of longest contiguous run of |
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267 spaces. |
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268 </p><dl> |
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269 <dt>Returns:</dt> |
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270 <dd> |
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271 The length of longest contiguous run of spaces (whether or not |
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272 preceding a tab) |
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273 </dd> |
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274 </dl><a NAME="Whitespace.not_equal_witness" ID="Whitespace.not_equal_witness"></a> |
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275 <h4>Whitespace.not_equal_witness</h4> |
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276 <b>not_equal_witness</b>(<i>other</i>) |
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277 <p> |
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278 Public method to calculate a tuple of witnessing tab size. |
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279 </p><p> |
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280 Intended to be used after not self.equal(other) is known, in which |
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281 case it will return at least one witnessing tab size. |
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282 </p><dl> |
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283 <dt><i>other</i></dt> |
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284 <dd> |
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285 Whitespace object to calculate against. |
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286 </dd> |
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287 </dl><dl> |
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288 <dt>Returns:</dt> |
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289 <dd> |
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290 A list of tuples (ts, i1, i2) such that |
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291 i1 == self.indent_level(ts) != other.indent_level(ts) == i2. |
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292 </dd> |
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293 </dl><a NAME="Whitespace.not_less_witness" ID="Whitespace.not_less_witness"></a> |
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294 <h4>Whitespace.not_less_witness</h4> |
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295 <b>not_less_witness</b>(<i>other</i>) |
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296 <p> |
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297 Public method to calculate a tuple of witnessing tab size. |
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298 </p><p> |
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299 Intended to be used after not self.less(other is known, in which |
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300 case it will return at least one witnessing tab size. |
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301 </p><dl> |
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302 <dt><i>other</i></dt> |
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303 <dd> |
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304 Whitespace object to calculate against. |
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305 </dd> |
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306 </dl><dl> |
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307 <dt>Returns:</dt> |
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308 <dd> |
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309 A list of tuples (ts, i1, i2) such that |
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310 i1 == self.indent_level(ts) >= other.indent_level(ts) == i2. |
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311 </dd> |
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312 </dl> |
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313 <div align="right"><a href="#top">Up</a></div> |
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314 <hr /><hr /> |
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315 <a NAME="check" ID="check"></a> |
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316 <h2>check</h2> |
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317 <b>check</b>(<i>file, text=""</i>) |
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318 <p> |
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319 Private function to check one Python source file for whitespace related |
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320 problems. |
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321 </p><dl> |
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322 <dt><i>file</i></dt> |
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323 <dd> |
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324 source filename (string) |
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325 </dd><dt><i>text</i></dt> |
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326 <dd> |
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327 source text (string) |
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328 </dd> |
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329 </dl><dl> |
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330 <dt>Returns:</dt> |
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331 <dd> |
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332 A tuple indicating status (True = an error was found), the |
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333 filename, the linenumber and the error message |
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334 (boolean, string, string, string). The values are only |
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335 valid, if the status is True. |
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336 </dd> |
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337 </dl> |
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338 <div align="right"><a href="#top">Up</a></div> |
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339 <hr /><hr /> |
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340 <a NAME="format_witnesses" ID="format_witnesses"></a> |
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341 <h2>format_witnesses</h2> |
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342 <b>format_witnesses</b>(<i>w</i>) |
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343 <p> |
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344 Function to format the witnesses as a readable string. |
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345 </p><dl> |
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346 <dt><i>w</i></dt> |
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347 <dd> |
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348 A list of witnesses |
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349 </dd> |
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350 </dl><dl> |
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351 <dt>Returns:</dt> |
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352 <dd> |
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353 A formated string of the witnesses. |
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354 </dd> |
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355 </dl> |
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356 <div align="right"><a href="#top">Up</a></div> |
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357 <hr /><hr /> |
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358 <a NAME="initService" ID="initService"></a> |
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359 <h2>initService</h2> |
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360 <b>initService</b>(<i></i>) |
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361 <p> |
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362 Initialize the service and return the entry point. |
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363 </p><dl> |
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364 <dt>Returns:</dt> |
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365 <dd> |
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366 the entry point for the background client (function) |
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367 </dd> |
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368 </dl> |
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369 <div align="right"><a href="#top">Up</a></div> |
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370 <hr /><hr /> |
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371 <a NAME="process_tokens" ID="process_tokens"></a> |
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372 <h2>process_tokens</h2> |
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373 <b>process_tokens</b>(<i>tokens</i>) |
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374 <p> |
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375 Function processing all tokens generated by a tokenizer run. |
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376 </p><dl> |
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377 <dt><i>tokens</i></dt> |
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378 <dd> |
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379 list of tokens |
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380 </dd> |
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381 </dl><dl> |
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382 <dt>Raises <b>NannyNag</b>:</dt> |
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383 <dd> |
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384 raised to indicate an indentation error |
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385 </dd> |
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386 </dl> |
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387 <div align="right"><a href="#top">Up</a></div> |
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388 <hr /> |
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389 </body></html> |