问在Python中，如果我输入a=1 b=2 c=a c=b，那么c的值是多少？C指什么？

EN

a=1
b=2
c=a
c=b

>>> a = 1
>>> b = 2
>>> c = a
>>> c
1
>>> c = b
>>> c
2
>>> b = 3
>>> c
2

>>> b = 2
>>> c = b
>>> id(b)
42766656
>>> id(c)
42766656

>>> a=1
>>> b=2
>>> print(id(a))
1574071312    # this is the address of a
>>> print(id(b))
1574071344    # this is the address of b
>>>c=a        # assignment of a to c
>>> print(c)
1             # c will contain now the value of a
>>> print(id(c))
1574071312    # this is the address of c which is same as a
>>> c=b       # re-assignment of b to c
>>> print(c)
2             # c wil contain now the value of b  
>>> print(id(c))
1574071344    # this the address of c now which is same as b