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: if file: file = os.path.abspath(file) link = '%s' % (file, pydoc.html.escape(file)) else: file = link = '?' 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' % (strong(pydoc.html.escape(str(etype))),
pydoc.html.escape(str(evalue)))]
for name in dir(evalue):
if name[:1] == '_': continue
value = pydoc.html.repr(getattr(evalue, name))
exception.append('\n
%s%s =\n%s' % (indent, name, value))
return head + ''.join(frames) + ''.join(exception) + '''
''' % pydoc.html.escape(
''.join(traceback.format_exception(etype, evalue, etb)))
def text(einfo, context=5):
"""Return a plain text document describing a given traceback."""
etype, evalue, etb = einfo
if isinstance(etype, type):
etype = etype.__name__
pyver = 'Python ' + sys.version.split()[0] + ': ' + sys.executable
date = time.ctime(time.time())
head = "%s\n%s\n%s\n" % (str(etype), pyver, date) + '''
A problem occurred in a Python script. Here is the sequence of
function calls leading up to the error, in the order they occurred.
'''
frames = []
records = inspect.getinnerframes(etb, context)
for frame, file, lnum, func, lines, index in records:
file = file and os.path.abspath(file) or '?'
args, varargs, varkw, locals = inspect.getargvalues(frame)
call = ''
if func != '?':
call = 'in ' + func + \
inspect.formatargvalues(args, varargs, varkw, locals,
formatvalue=lambda value: '=' + pydoc.text.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' % (file, call)]
if index is not None:
i = lnum - index
for line in lines:
num = '%5d ' % i
rows.append(num+line.rstrip())
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 ' + name
elif where != 'local': name = where + name.split('.')[-1]
dump.append('%s = %s' % (name, pydoc.text.repr(value)))
else:
dump.append(name + ' undefined')
rows.append('\n'.join(dump))
frames.append('\n%s\n' % '\n'.join(rows))
exception = ['%s: %s' % (str(etype), str(evalue))]
for name in dir(evalue):
value = pydoc.text.repr(getattr(evalue, name))
exception.append('\n%s%s = %s' % (" "*4, name, value))
return head + ''.join(frames) + ''.join(exception) + '''
The above is a description of an error in a Python program. Here is
the original traceback:
%s
''' % ''.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,
format="html"):
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
self.format = format
def __call__(self, etype, evalue, etb):
self.handle((etype, evalue, etb))
def handle(self, info=None):
info = info or sys.exc_info()
if self.format == "html":
self.file.write(reset())
formatter = (self.format=="html") and html or text
plain = False
try:
doc = formatter(info, self.context)
except: # just in case something goes wrong
doc = ''.join(traceback.format_exception(*info))
plain = True
if self.display:
if plain:
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: suffix = ['.txt', '.html'][self.format=="html"] (fd, path) = tempfile.mkstemp(suffix=suffix, dir=self.logdir) try: file = os.fdopen(fd, '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, format="html"):
"""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=display, logdir=logdir,
context=context, format=format)
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