self.name = name
self.price = price
list_commodity_infos = [
Commodity(1001, "屠龙刀", 10000),
Commodity(1002, "倚天剑", 10000),
Commodity(1003, "金箍棒", 52100),
Commodity(1004, "口罩", 20),
Commodity(1005, "酒精", 30),
Commodity(1006, "屠龙刀", 10000),
Commodity(1007, "口罩", 50),
]
# 练习1：
re = IterableHelper.get_min(list_commodity_infos, lambda item: item.price)
print(re.__dict__)
# 练习2:
def order_by01():
for r in range(len(list_commodity_infos) - 1):
for c in range(r + 1, len(list_commodity_infos)):
if list_commodity_infos[r].price > list_commodity_infos[c].price:
list_commodity_infos[r], list_commodity_infos[c] = list_commodity_infos[c], list_commodity_infos[r]
def order_by02():
for r in range(len(list_commodity_infos) - 1):
for c in range(r + 1, len(list_commodity_infos)):
if list_commodity_infos[r].cid > list_commodity_infos[c].cid:
list_commodity_infos[r], list_commodity_infos[c] = list_commodity_infos[c], list_commodity_infos[r]
def get_min01():
min_value = list_employees[0]
for i in range(1, len(list_employees)):
if min_value.eid > list_employees[i].eid:
min_value = list_employees[i]
return min_value
def get_min02():
min_value = list_employees[0]
for i in range(1, len(list_employees)):
if min_value.money > list_employees[i].money:
min_value = list_employees[i]
return min_value
def condition01(item):
return item.money
def get_min(condition01):
min_value = list_employees[0]
for i in range(1, len(list_employees)):
if condition01(min_value) > condition01(list_employees[i]):
min_value = list_employees[i]
return min_value
print(IterableHelper.get_min(list_employees, lambda item: item.eid).name)
print(IterableHelper.get_min(list_employees, lambda item: item.money).name)
class Employee:
def __init__(self, eid, did, name, money):
self.eid = eid # 员工编号
self.did = did # 部门编号
self.name = name
self.money = money
# 通过重写方法获取最值,只适用于最常见的条件
# min(list_employees)
# 如果条件过多,通过函数式编程实现.
# 自定义函数(list_employees,lambda emp:emp.money
def __lt__(self, other):
return self.money < other.money
# 员工列表
list_employees = [
Employee(1001, 9002, "师父", 60000),
Employee(1002, 9001, "孙悟空", 50000),
Employee(1003, 9002, "猪八戒", 20000),
Employee(1004, 9001, "沙僧", 30000),
Employee(1005, 9001, "小白龙", 15000),
]
min_value = IterableHelper.get_min(list_employees, lambda emp: emp.money)
print(min_value.__dict__)
min_value = min(list_employees)
print(min_value.__dict__)
def get_min_area(self):
return IterableHelper.get_min(self.__list_houses, lambda item: item.area)