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annotate roundup/cgi/cgitb.py @ 1183:08a13a84ed43

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Some speedups - both of the SQL backends can handle using only one cursor. Better date unserialisation too.
author Richard Jones <richard@users.sourceforge.net>
date Mon, 23 Sep 2002 06:48:35 +0000
parents 7e193bbda38e
children b862bbf2067a
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1 #
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2 # This module was written by Ka-Ping Yee, <ping@lfw.org>.
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3 #
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4 # $Id: cgitb.py,v 1.6 2002-09-13 03:31:18 richard Exp $
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5
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6 __doc__ = """
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7 Extended CGI traceback handler by Ka-Ping Yee, <ping@lfw.org>.
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8 """
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9
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10 import sys, os, types, string, keyword, linecache, tokenize, inspect, cgi
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11 import pydoc, traceback
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12
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13 from roundup.i18n import _
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14
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15 def breaker():
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16 return ('<body bgcolor="white">' +
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17 '<font color="white" size="-5"> > </font> ' +
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18 '</table>' * 5)
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19
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20 def niceDict(indent, dict):
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21 l = []
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22 for k,v in dict.items():
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23 l.append('<tr><td><strong>%s</strong></td><td>%s</td></tr>'%(k,
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24 cgi.escape(repr(v))))
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25 return '\n'.join(l)
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26
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27 def pt_html(context=5):
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28 l = ['<h1>Templating Error</h1>'
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29 '<p class="help">Debugging information follows</p>'
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30 '<ol>']
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31 from roundup.cgi.PageTemplates.Expressions import TraversalError
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32 for frame, file, lnum, func, lines, index in inspect.trace(context):
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33 args, varargs, varkw, locals = inspect.getargvalues(frame)
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34 if locals.has_key('__traceback_info__'):
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35 ti = locals['__traceback_info__']
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36 if isinstance(ti, TraversalError):
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37 s = []
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38 for name, info in ti.path:
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39 s.append('<li>"%s" (%s)</li>'%(name,cgi.escape(repr(info))))
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40 s = '\n'.join(s)
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41 l.append('<li>Looking for "%s", current path:<ol>%s</ol></li>'%(
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42 ti.name, s))
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43 else:
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44 l.append('<li>In %s</li>'%cgi.escape(str(ti)))
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45 if locals.has_key('__traceback_supplement__'):
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46 ts = locals['__traceback_supplement__']
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47 if len(ts) == 2:
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48 supp, context = ts
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49 l.append('<li>A problem occurred in your template "%s"</li>'%
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50 str(context.id))
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51 elif len(ts) == 3:
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52 supp, context, info = ts
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53 l.append('''
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54 <li>While evaluating the %r expression on line %d
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55 <table class="otherinfo" style="font-size: 90%%">
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56 <tr><th colspan="2" class="header">Current variables:</th></tr>
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57 %s
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58 %s
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59 </table></li>
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60 '''%(info, context.position[0], niceDict(' ', context.global_vars),
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61 niceDict(' ', context.local_vars)))
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62
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63 l.append('''
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64 </ol>
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65 <table style="font-size: 80%%; color: gray">
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66 <tr><th class="header" align="left">Full traceback:</th></tr>
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67 <tr><td><pre>%s</pre></td></tr>
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68 </table>'''%cgi.escape(''.join(traceback.format_exception(sys.exc_type,
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69 sys.exc_value, sys.exc_traceback))))
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70 l.append('<p>&nbsp;</p>')
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71 return '\n'.join(l)
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72
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73 def html(context=5):
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74 etype, evalue = sys.exc_type, sys.exc_value
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75 if type(etype) is types.ClassType:
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76 etype = etype.__name__
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77 pyver = 'Python ' + string.split(sys.version)[0] + '<br>' + sys.executable
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78 head = pydoc.html.heading(
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79 '<font size=+1><strong>%s</strong>: %s</font>'%(etype, evalue),
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80 '#ffffff', '#777777', pyver)
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81
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82 head = head + (_('<p>A problem occurred while running a Python script. '
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83 'Here is the sequence of function calls leading up to '
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84 'the error, with the most recent (innermost) call first. '
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85 'The exception attributes are:'))
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86
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87 indent = '<tt><small>%s</small>&nbsp;</tt>' % ('&nbsp;' * 5)
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88 traceback = []
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89 for frame, file, lnum, func, lines, index in inspect.trace(context):
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90 if file is None:
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91 link = '''&lt;file is None - probably inside <tt>eval</tt> or
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92 <tt>exec</tt>&gt;'''
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93 else:
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94 file = os.path.abspath(file)
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95 link = '<a href="file:%s">%s</a>' % (file, pydoc.html.escape(file))
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96 args, varargs, varkw, locals = inspect.getargvalues(frame)
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97 if func == '?':
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98 call = ''
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99 else:
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100 call = 'in <strong>%s</strong>' % func + inspect.formatargvalues(
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101 args, varargs, varkw, locals,
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102 formatvalue=lambda value: '=' + pydoc.html.repr(value))
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103
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104 level = '''
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105 <table width="100%%" bgcolor="#dddddd" cellspacing=0 cellpadding=2 border=0>
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106 <tr><td>%s %s</td></tr></table>''' % (link, call)
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107
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108 if index is None or file is None:
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109 traceback.append('<p>' + level)
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110 continue
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111
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112 # do a file inspection
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113 names = []
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114 def tokeneater(type, token, start, end, line, names=names):
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115 if type == tokenize.NAME and token not in keyword.kwlist:
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116 if token not in names:
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117 names.append(token)
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118 if type == tokenize.NEWLINE: raise IndexError
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119 def linereader(file=file, lnum=[lnum]):
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120 line = linecache.getline(file, lnum[0])
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121 lnum[0] = lnum[0] + 1
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122 return line
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123
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124 try:
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125 tokenize.tokenize(linereader, tokeneater)
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126 except IndexError:
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127 pass
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128 lvals = []
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129 for name in names:
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130 if name in frame.f_code.co_varnames:
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131 if locals.has_key(name):
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132 value = pydoc.html.repr(locals[name])
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133 else:
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134 value = _('<em>undefined</em>')
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135 name = '<strong>%s</strong>' % name
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136 else:
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137 if frame.f_globals.has_key(name):
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138 value = pydoc.html.repr(frame.f_globals[name])
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139 else:
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140 value = _('<em>undefined</em>')
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141 name = '<em>global</em> <strong>%s</strong>' % name
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142 lvals.append('%s&nbsp;= %s'%(name, value))
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143 if lvals:
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144 lvals = string.join(lvals, ', ')
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145 lvals = indent + '<small><font color="#909090">%s'\
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146 '</font></small><br>'%lvals
985
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147 else:
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148 lvals = ''
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149
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150 excerpt = []
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151 i = lnum - index
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152 for line in lines:
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153 number = '&nbsp;' * (5-len(str(i))) + str(i)
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154 number = '<small><font color="#909090">%s</font></small>' % number
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155 line = '<tt>%s&nbsp;%s</tt>' % (number, pydoc.html.preformat(line))
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156 if i == lnum:
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157 line = '''
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158 <table width="100%%" bgcolor="#white" cellspacing=0 cellpadding=0 border=0>
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159 <tr><td>%s</td></tr></table>''' % line
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160 excerpt.append('\n' + line)
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161 if i == lnum:
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162 excerpt.append(lvals)
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163 i = i + 1
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164 traceback.append('<p>' + level + string.join(excerpt, '\n'))
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165
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166 traceback.reverse()
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167
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168 exception = '<p><strong>%s</strong>: %s' % (str(etype), str(evalue))
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169 attribs = []
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170 if type(evalue) is types.InstanceType:
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171 for name in dir(evalue):
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172 value = pydoc.html.repr(getattr(evalue, name))
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173 attribs.append('<br>%s%s&nbsp;= %s' % (indent, name, value))
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174
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175 return head + string.join(attribs) + string.join(traceback) + '<p>&nbsp;</p>'
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176
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177 def handler():
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178 print breaker()
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179 print html()
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180
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181 # vim: set filetype=python ts=4 sw=4 et si
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