a=[("1","21","12"),("2","31","32")]
for k,v,i in a:
    print(k,v,i)
结果:
1 21 12
2 31 32

list里含元组,可以用这种遍历输出挨个元素

但list里含字典时,这样就只能输出keys了

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b=[{"1":12,"2":1,"3":11},{"4":2,"5":21,"6":22}]
for k,v,i in b:
    print(k,v,i) 
 结果:
1 2 3
4 5 6
for i in b:
    for k,v in i.items():
        print(k,v)        
结果:


1 12
2 1
3 11
4 2
5 21
6 22

  

  

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