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一、自定义排序规则
自定义rulesort函数规定排序规则 并且按照分数降序排列后效果如下
def rulesort(elem): # 定义排序规则 print("自定义排序规则") list_dict = [{"name":"小黑子","python":99,"c":89}, {"name":"小鸡子","python":100,"c":80}, {"name":"ikun","python":95,"c":97}, {"name":"背带裤","python":91,"c":96}] print("对列表排序前：") for d in list_dict: print(d) list_dict.sort(key = rulesort ,reverse = True) # 降序排列 print("对列表排序后：") print(d)
二、使用lambda表达式
使用lambda表达式按照考试分数进行降序排列后效果如下
代码如下
print("lambda表达式") list_dict = [{"name":"小黑子","python":99,"c":89}, {"name":"小鸡子","python":100,"c":80}, {"name":"ikun","python":95,"c":97}, {"name":"背带裤","python":91,"c":96}] print("对列表排序前：") for d in list_dict: print(d) list_dict.sort(key = lambda x :x['python'] ,reverse = True) # 降序排列 print("对列表排序后：") for d in list_dict: print(d)
