A problem occurred in a Python script.
-Here is the sequence of function calls leading up to
-the error, with the most recent (innermost) call last.'''
+ '#ffffff', '#6622aa', 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.'''
- indent = '' + ' ' * 5 + ' '
+ 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))
+ link = '%s' % (file, pydoc.html.escape(file))
args, varargs, varkw, locals = inspect.getargvalues(frame)
- if func == '?':
- call = ''
- else:
- def eqrepr(value): return '=' + pydoc.html.repr(value)
- call = 'in %s' % func + inspect.formatargvalues(
- args, varargs, varkw, locals, formatvalue=eqrepr)
+ call = ''
+ if func != '?':
+ call = 'in ' + strong(func) + \
+ inspect.formatargvalues(args, varargs, varkw, locals,
+ formatvalue=lambda value: '=' + pydoc.html.repr(value))
- names = []
- def tokeneater(type, token, start, end, line):
- if type == tokenize.NAME and token not in keyword.kwlist:
- if token not in names: names.append(token)
- if type == tokenize.NEWLINE: raise IndexError
- def linereader(lnum=[lnum]):
- line = linecache.getline(file, lnum[0])
- lnum[0] += 1
- return line
+ 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)
- try:
- tokenize.tokenize(linereader, tokeneater)
- except IndexError: pass
- lvals = []
- for name in names:
- if name in frame.f_code.co_varnames:
- if locals.has_key(name):
- value = pydoc.html.repr(locals[name])
- else:
- value = 'undefined'
- name = '%s' % name
- else:
- if frame.f_globals.has_key(name):
- value = pydoc.html.repr(frame.f_globals[name])
- else:
- value = 'undefined'
- name = 'global %s' % name
- lvals.append('%s = %s' % (name, value))
- if lvals:
- lvals = indent + '''
-%s
''' % (', '.join(lvals))
- else:
- lvals = ''
-
- level = '''
-
| %s %s |
| %s |
' + level + '\n'.join(excerpt)) + num = small(' ' * (5-len(str(i))) + str(i)) + ' ' + line = '%s%s' % (num, pydoc.html.preformat(line)) + if i in highlight: + rows.append('
%s: %s' % (str(etype), str(evalue))] + 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: %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
- plaintrace = ''.join(traceback.format_exception(etype, evalue, etb))
-
return head + ''.join(frames) + ''.join(exception) + '''
-
-''' % plaintrace
+''' % ''.join(traceback.format_exception(etype, evalue, etb))
class Hook:
- def __init__(self, display=1, logdir=None):
+ """A hook to replace sys.excepthook that shows tracebacks in HTML."""
+
+ def __init__(self, display=1, logdir=None, context=5):
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
def __call__(self, etype, evalue, etb):
- """This hook can replace sys.excepthook (for Python 2.1 or higher)."""
self.handle((etype, evalue, etb))
def handle(self, info=None):
- import sys, os
+ import sys
info = info or sys.exc_info()
- text = 0
print reset()
try:
- doc = html(*info)
+ text, doc = 0, html(info, self.context)
except: # just in case something goes wrong
import traceback
- doc = ''.join(traceback.format_exception(*info))
- text = 1
+ text, doc = 1, ''.join(traceback.format_exception(*info))
if self.display:
if text:
doc = doc.replace('&', '&').replace('<', '<')
- print '
', doc, '' + print '
' + doc + '' else: print doc else: print '
A problem occurred in a Python script.' if self.logdir is not None: - import tempfile + 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() - print '
%s contains the description of this error.' % path + print '
%s contains the description of this error.' % path except: - print '
Tried to write to %s, but failed.' % path + print '
Tried to save traceback to %s, but failed.' % path handler = Hook().handle -def enable(display=1, logdir=None): +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.""" import sys - sys.excepthook = Hook(display, logdir) + sys.excepthook = Hook(display, logdir, context)