>>> list1 = [1,2]
>>> id(list1)
50081032
>>> list2 = list1.copy()
>>> print(list1 == list2)
True
>>> id(list2)
50081352
#几种字符串复制方法，id相同
>>> s0 ='Python猫'
>>> s1 = s0
>>> s2 = str(s0)
>>> s3 = s0[:]
>>> s4 = s0 + ''
>>> s5 = '%s' % s0
>>> s6 = s0 * 1
>>> s7 = "".join(s0)
>>> import copy
>>> s8 = copy.copy(s0)
>>> print(s0)
Python猫
>>> id(s0)
50075568
>>> id(s1)
50075568
>>> id(s2)
50075568
>>> id(s3)
50075568
>>> id(s4)
50075568
>>> id(s5)
50075568
>>> id(s6)
50075568
#第七种方法会创建一个新的id
>>> id(s7)
50126672
>>> id(s8)
50075568
>>> print(s7)
Python猫
>>> print(s8)
Python猫
#第九种两个相同的字符串id是不一样的，嘻哈值相同
>>> s9 = 'Python猫'
>>> print(id(s0) == id(s9))
False
>>> id(s0)
50075568
>>> id(s9)
50076240
>>> id(s7)
50126672
