编辑代码

scores={'小明':95,'小红':90,'小刚':90}
del scores['小刚']
print(scores)
scores['小刚'] = 92
print(scores)
scores['小美'] = 85
print(scores)

students = [['小明','小红','小刚','小美'],['小强','小兰','小伟','小芳']]
print(students[1][1])

scores1 = {
        '第一组':{'小明':95,'小红':90,'小刚':100,'小美':85},
            '第二组':{'小强':99,'小兰':89,'小伟':93,'小芳':88}
                }
print(scores1['第一组']['小刚'])

students = {
    
        '第一组':['小明','小红','小刚','小美'],
        
            '第二组':['小强','小兰','小伟','小芳']
            
                }
scores = [
                
            {'小明':95,'小红':90,'小刚':100,'小美':85},
                    
            {'小强':99,'小兰':89,'小伟':93,'小芳':88}
                        
        ]   
                            
print(students['第一组'][2])
print(scores[0]['小刚'])