parse limited form of arguments of function

    in the form a=1, b='c'
    as a dictionary

def parse_arg_line(fargs):
    """parse limited form of arguments of function

    in the form a=1, b='c'
    as a dictionary
    """

    # Convert to literal dict
    fargs = fargs.strip()
    if fargs == '':
        return {}

    pairs = [s.strip() for s in fargs.split(',')]
    # find first "="
    result = []
    for p in pairs:
        fe = p.find("=")
        if fe == -1:
            # no equal
            raise ValueError("malformed")
        key = p[:fe]
        val = p[fe + 1:]
        tok = "'{}': {}".format(key, val)
        result.append(tok)
    tokj = ','.join(result)
    result = "{{ {0} }}".format(tokj)
    state = ast.literal_eval(result)
    return state