定義字典：
dict = {'Name': 'Zara', 'Age': 7, 'Class': 'First'}獲取字典中的值
PRint ("dict['Name']: ",dict['Name'])print ("dict['Age']: ",dict['Age'])結(jié)果：
dict['Name']: Zaradict['Age']: 7注意點(diǎn)：如果代碼改為
print ("dict['Name']: "+dict['Name'])print ("dict['Age']: "+dict['Age'])會(huì)報(bào)如下錯(cuò)誤：
dict['Name']: Zara print ("dict['Age']: "+dict['Age'])TypeError: Can't convert 'int' object to str implicitly錯(cuò)誤原因，數(shù)字不能和字符串進(jìn)行’+’號(hào)連接 我們可以使用str(dict[‘Age’])進(jìn)行強(qiáng)制轉(zhuǎn)換
print ("dict['Name']: "+dict['Name'])print ("dict['Age']: "+str(dict['Age']))實(shí)驗(yàn)結(jié)果：
dict['Name']: Zaradict['Age']: 7在字典中添加list
grade={'math':{'yingshu':['yangmi','luoyang','yuzhenchang'],'xinxi':['wenping','kangjing','jinwei']},'tongji':{'tongji':['A','B','C'],'jingsuan':['E','F','G']}}獲取數(shù)據(jù)：
print(grade['math']['yingshu'][0])實(shí)驗(yàn)結(jié)果：
yangmi修改數(shù)據(jù)：
dict = {'Name': 'Zara', 'Age': 7, 'Class': 'First'}dict['Age'] = 8; # update existing entryprint ("dict['Age']: ", dict['Age'])實(shí)驗(yàn)結(jié)果：
dict['Age']: 8添加新的記錄項(xiàng)：
dict = {'Name': 'Zara', 'Age': 7, 'Class': 'First'}dict['School'] = "DPS School"; # Add new entryprint ("dict['School']: ", dict['School'])實(shí)驗(yàn)結(jié)果：
dict['School']: DPS School刪除記錄：
dict = {'Name': 'Zara', 'Age': 7, 'Class': 'First'}del dict['Name']; # 刪除鍵是'Name'的條目print(dict['Name'])運(yùn)行結(jié)果會(huì)報(bào)錯(cuò):
print(dict['Name'])KeyError: 'Name'清空詞典所有條目和刪除詞典
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