Python 如何将元组的元素连接在一起并转换为数字

我需要加入tup1的元素，使其成为一个数字。 每个置换数必须转换为数字

from itertools import permutations 
a,b= input().split()
a = int(a)
b = int(b)
default = -1

c = [int(i) for i in str(a)]
perm = permutations(c)
for tupl in list(perm):
    res = list(map("".join, tupl))
    #num =  ''.join(j) for j in tupl

    print("\n")
#    print( num)
    # for j in range(0,len(tupl)):
    #     print(tupl[j])
            # res = [''.join(tups) for tups in  ]

还是作为一个班轮

>>> a = 213
>>> for tupl in permutations(str(a)):
...     num = int(''.join(tupl))
...     print (num)
... 
213
231
123
132
321
312

还是作为一个班轮

>>> a = 213
>>> for tupl in permutations(str(a)):
...     num = int(''.join(tupl))
...     print (num)
... 
213
231
123
132
321
312