def _nonctext(self, s):
        """True if string s is not a ctext character of RFC822.
        """
        return s.isspace() or s in ('(', ')', '\\')
dataset/ETHPy150Open OpenCobolIDE/OpenCobolIDE/open_cobol_ide/extlibs/future/backports/email/header.py/Header._nonctext/original