def p_varargslist15(p):
    # def f(a=1,): pass
    # def f((a,b)=(1,2),): pass
    p[0] = ast.arguments(args=[p[1]], defaults=[p[3]], vararg=None, kwarg=None)
Get all the message's header fields and values.
dataset/ETHPy150Open nucleic/enaml/enaml/core/parser.py/p_varargslist15--crossover with--dataset/ETHPy150Open kleientertainment/ds_mod_tools/pkg/win32/Python27/Lib/email/message.py/Message.items