函数参数

def menu(wine, entree, dessert=‘pudding‘):
    return {‘wine‘: wine, ‘entree‘: entree, ‘dessert‘: dessert}

#位置参数
print(menu(‘bordeaux‘, ‘beef‘, ‘bagel‘))

#关键字参数
print(menu(entree=‘beef‘, dessert=‘bagel‘, wine=‘bordeaux‘))
print(menu(‘bordeaux‘, entree=‘beef‘, dessert=‘bagel‘))

#指定默认参数值
print(menu(‘bordeaux‘, ‘beef‘))