human
I wrote the below code

    from ._textwrap import TextWrapper
    text = text.expandtabs()
    wrapper = TextWrapper(width, initial_indent=initial_indent, subsequent_indent=subsequent_indent, replace_whitespace=False)
    if (not preserve_paragraphs):
        return wrapper.fill(text)
    p = []
    buf = []
    indent = None
    def _flush_par():
        if (not buf):
            return
        if (buf[0].strip() == '\x08'):
            p.append(((indent or 0), True, '\n'.join(buf[1:])))
        else:
            p.append(((indent or 0), False, '    '.join(buf)))
        del buf[:]
    for line in text.splitlines():
        if (not line):
            _flush_par()
            indent = None
        else:
            if (indent is None):
                orig_len = term_len(line)
                line = line.lstrip()
                indent = (orig_len - term_len(line))
            buf.append(line)
    _flush_par()
    rv = []
    for (indent, raw, text) in p:
        with wrapper.extra_indent(('    ' * indent)):
            if raw:
                rv.append(wrapper.indent_only(text))
            else:
                rv.append(wrapper.fill(text))
    return '\n\n'.join(rv)

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

def wrap_text(text, width=78, initial_indent='', subsequent_indent='', preserve_paragraphs=False):