human
I wrote the below code

    import time
    import linecache
    import inspect
    import pydoc
    import cgitb
    (etype, evalue, etb) = (info or sys.exc_info())
    if isinstance(etype, ClassType):
        etype = etype.__name__
    s = {}
    s['pyver'] = (((('Python    ' + sys.version.split()[0]) + ':    ') + sys.executable) + ('    (prefix:    %s)' % sys.prefix))
    s['date'] = time.ctime(time.time())
    records = inspect.getinnerframes(etb, context)
    del etb
    s['frames'] = []
    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 = inspect.formatargvalues(args, varargs, varkw, locals, formatvalue=(lambda value: ('=' + pydoc.text.repr(value))))
        f = {'file': file, 'func': func, 'call': call, 'lines': {}, 'lnum': lnum}
        highlight = {}
        def reader(lnum=[lnum]):
            highlight[lnum[0]] = 1
            try:
                return linecache.getline(file, lnum[0])
            finally:
                lnum[0] += 1
        vars = cgitb.scanvars(reader, frame, locals)
        if file.endswith('html'):
            lmin = (((lnum > context) and (lnum - context)) or 0)
            lmax = (lnum + context)
            lines = code.split('\n')[lmin:lmax]
            index = (min(context, lnum) - 1)
        if (index is not None):
            i = (lnum - index)
            for line in lines:
                f['lines'][i] = line.rstrip()
                i += 1
        f['dump'] = {}
        for (name, where, value) in vars:
            if (name in f['dump']):
                continue
            if (value is not cgitb.__UNDEF__):
                if (where == 'global'):
                    name = ('global    ' + name)
                elif (where != 'local'):
                    name = (where + name.split('.')[(-1)])
                f['dump'][name] = pydoc.text.repr(value)
            else:
               ...

What's a good function header?
 Here's a good function header?
assistant
#Here's a good function header.

def snapshot(info=None, context=5, code=None, environment=None):