字典


a={'小明':'95','小红':'90','小李':'94'}

print(a['小明'])

a={'小明':'95','小红':'90','小李':'94'}

print(a['TOM'])


a={'小明':'95','小红':'90','小李':'94'}

a['小明']=100#新建小明分数

a['TOM']=60#新建TOM键值对

print(a)

``` python

a=[(1,2),(2,3),(3,4)]

a=dict(a)

print(a)

```

``` python

a={'小明':'95','小红':'90','小李':'94'}

print(a)

b={'小李':'94','小李':'96'}

print(b)

```