[issue4643] cgitb.html fails if getattr call raises exception

[Irit Katriel]

Irit Katriel <iritkatr...@yahoo.com> added the comment:

The issue still occurs in 3.10. Python 3 version of the script:


import cgitb

class WeirdObject(object):
    def __getattr__(self, attr):
        if attr == 'a':
            return 'the letter a'
        elif attr == 'b':
            return str(slf) # Intentional NameError
        raise AttributeError(attr)

try:
    weird = WeirdObject()
    print('A:', weird.a)
    print('B:', weird.b)
    print('C:', weird.c)
except Exception as e:
    import sys
    print('\nSomething went wrong - attempting to generate HTML stack trace.')
    try:
        html_text = cgitb.html(sys.exc_info())
    except:
        print('Error generating HTML stack trace!')
        raise
    else:
        print('Here is stack trace in HTML:\n', html_text)

----------
nosy: +iritkatriel
versions: +Python 3.10, Python 3.8, Python 3.9 -Python 2.7, Python 3.2, Python 
3.3, Python 3.4

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<https://bugs.python.org/issue4643>
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