my_tup = (56, 78, 91, 32, 45, 11, 23)

print("元组是：")
print(my_tup)

K = "你好"

my_result = [elem for sub in my_tup for elem in (sub, K)]

print("转换后带K的元组是：")
print(my_result)

元组是：
(56, 78, 91, 32, 45, 11, 23)
转换后带K的元组是：
[56, '你好', 78, '你好', 91, '你好', 32, '你好', 45, '你好', 11, '你好', 23, '你好']