调用的函数输出的结果是两个字典，这两个字典怎么合并？？
问题描述：
def main() :
while True :
menu()
choice = int(input('请选择'))
l1 = {}
l2 = {}
if choice in [0,1] :
if choice == 0 :
l1 = file1()
elif choice == 1 :
l2 = file2()
return
dict(l1,**l2)
print(dict)
答
def main() :
while True :
menu()
choice = int(input('请选择'))
l1 = {}
l2 = {}
if choice in [0,1] :
if choice == 0 :
l1 = file1()
elif choice == 1 :
l2 = file2()
return
l1.update(l2)
print(l1)
答
l1.update(l2)