A problem occurred in a Python script. Here is the sequence of function calls leading up to the error, in the order they occurred.''' indent = '' + small(' ' * 5) + ' ' frames = [] records = inspect.getinnerframes(etb, context) for frame, file, lnum, func, lines, index in records: file = file and os.path.abspath(file) or '?' link = '%s' % (file, pydoc.html.escape(file)) args, varargs, varkw, locals = inspect.getargvalues(frame) call = '' if func != '?': call = 'in ' + strong(func) + \ inspect.formatargvalues(args, varargs, varkw, locals, formatvalue=lambda value: '=' + pydoc.html.repr(value)) highlight = {} def reader(lnum=[lnum]): highlight[lnum[0]] = 1 try: return linecache.getline(file, lnum[0]) finally: lnum[0] += 1 vars = scanvars(reader, frame, locals) rows = ['%s%s %s' % (' ', link, call)] if index is not None: i = lnum - index for line in lines: num = small(' ' * (5-len(str(i))) + str(i)) + ' ' line = '%s%s' % (num, pydoc.html.preformat(line)) if i in highlight: rows.append('%s' % line) else: rows.append('%s' % grey(line)) i += 1 done, dump = {}, [] for name, where, value in vars: if name in done: continue done[name] = 1 if value is not __UNDEF__: if where == 'global': name = 'global ' + strong(name) elif where == 'local': name = strong(name) else: name = where + strong(name.split('.')[-1]) dump.append('%s = %s' % (name, pydoc.html.repr(value))) else: dump.append(name + ' undefined') rows.append('%s' % small(grey(', '.join(dump)))) frames.append('''
''' % '\n'.join(rows)) exception = ['%s: %s' % (strong(str(etype)), str(evalue))] if type(evalue) is types.InstanceType: for name in dir(evalue): value = pydoc.html.repr(getattr(evalue, name)) exception.append('\n
%s%s =\n%s' % (indent, name, value)) import traceback return head + ''.join(frames) + ''.join(exception) + ''' ''' % ''.join(traceback.format_exception(etype, evalue, etb)) class Hook: """A hook to replace sys.excepthook that shows tracebacks in HTML.""" def __init__(self, display=1, logdir=None, context=5, file=None): self.display = display # send tracebacks to browser if true self.logdir = logdir # log tracebacks to files if not None self.context = context # number of source code lines per frame self.file = file or sys.stdout # place to send the output def __call__(self, etype, evalue, etb): self.handle((etype, evalue, etb)) def handle(self, info=None): info = info or sys.exc_info() self.file.write(reset()) try: text, doc = 0, html(info, self.context) except: # just in case something goes wrong import traceback text, doc = 1, ''.join(traceback.format_exception(*info)) if self.display: if text: doc = doc.replace('&', '&').replace('<', '<') self.file.write('
' + doc + '\n') else: self.file.write(doc + '\n') else: self.file.write('
A problem occurred in a Python script.\n') if self.logdir is not None: import os, tempfile name = tempfile.mktemp(['.html', '.txt'][text]) path = os.path.join(self.logdir, os.path.basename(name)) try: file = open(path, 'w') file.write(doc) file.close() msg = '
%s contains the description of this error.' % path except: msg = '
Tried to save traceback to %s, but failed.' % path self.file.write(msg + '\n') try: self.file.flush() except: pass handler = Hook().handle def enable(display=1, logdir=None, context=5): """Install an exception handler that formats tracebacks as HTML. The optional argument 'display' can be set to 0 to suppress sending the traceback to the browser, and 'logdir' can be set to a directory to cause tracebacks to be written to files there.""" sys.excepthook = Hook(display, logdir, context)
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