1 >>> a 2 [1, 2] 3 >>> b=a[:] 4 >>> b 5 [1, 2] 6 >>> b[0]=20 7 >>> b 8 [20, 2] 9 >>> a10 [1, 2]

 1 import copy 2 >>> c=copy.copy(a) 3 >>> c 4 [1, 2] 5 >>> c[1]=30 6 >>> c 7 [1, 30] 8 >>> a 9 [1, 2]10 >>> b11 [20, 2]

 1 >>> a=[(‘he‘,1),(‘wo‘,‘jia‘)] 2 >>> p=dict(a) 3 >>> p 4 {‘wo‘: ‘jia‘, ‘he‘: 1} 5 >>> b=p.copy() 6 >>> b 7 {‘wo‘: ‘jia‘, ‘he‘: 1} 8 >>> b[‘wo‘]=‘ja‘ 9 >>> b10 {‘wo‘: ‘ja‘, ‘he‘: 1}11 >>> p12 {‘wo‘: ‘jia‘, ‘he‘: 1}