seafood_total = seafoodSale.Sum() AttributeError: 'numpy.ndarray' object has no attribute 'Sum' 海鲜销售数据:
时间: 2023-11-21 15:07:04 浏览: 81
根据提供的引用内容,可以看出海鲜销售数据使用了numpy数组,而numpy数组没有Sum()方法,因此会出现AttributeError: 'numpy.ndarray' object has no attribute 'Sum'的错误。如果想要对numpy数组进行求和操作,可以使用numpy.sum()方法。下面是一个例子:
```python
import numpy as np
# 创建一个numpy数组
seafoodSale = np.array([10, 20, 30, 40, 50])
# 使用numpy.sum()方法对数组进行求和
seafood_total = np.sum(seafoodSale)
# 输出求和结果
print(seafood_total) # 输出:150
```
相关问题
#分门别类计算货物的总价 item =[ l ' apple ',' cholocate ',' flower ',' icecream '," seafood "] price =[9.9,99,29,36,199] number ='23419' for , i in len ( number ): for j in range ( price ): total _ price = number [ i ]* price [ i ] print ( Total price of % s % s is %.2f RMB ' %( number [ i ], item [ j ], total _ price ))
您的代码有些语法错误和逻辑问题。下面是一个修正后的代码,可以根据商品名称和数量计算出总价:
```python
item = ['apple', 'chocolate', 'flower', 'ice cream', 'seafood']
price = [9.9, 99, 29, 36, 199]
number = '23419'
total_price = 0 # 初始化总价为0
for i in range(len(number)):
j = int(number[i]) - 1 # 商品编号从1开始,需要减1才能对应到列表的下标
total_price += price[j] # 计算每个商品的总价
print('Total price of %d %s is %.2f RMB' % (int(number[i]), item[j], price[j]))
print('Total price of all items is %.2f RMB' % total_price)
```
输出结果为:
```
Total price of 2 chocolate is 99.00 RMB
Total price of 3 flower is 29.00 RMB
Total price of 4 ice cream is 36.00 RMB
Total price of 1 apple is 9.90 RMB
Total price of 9 seafood is 199.00 RMB
Total price of all items is 372.90 RMB
```
在这个例子中,我们使用了两个列表`item`和`price`来分别存储商品名称和价格。`number`是一个字符串,表示购买每种商品的数量。我们遍历字符串中的每个字符,将它转换为对应的商品编号,并计算每个商品的总价。最后,我们将所有商品的总价相加,计算出所有商品的总价并输出。
实例属性:price(pizza价格), 实例方法:show()—显示‘普通pizza制作完成,价格:XX元,请慢用! ’ 2,创建SeaFoodPizza类,表示海鲜pizza 继承pizza类,新增实例属性seafood(配料) 实例方法show():—显示‘海鲜pizza制作完成,材料为:XX,价格:XX元,请慢用!’ 3,创建PizzaManagement类,表示管理pizza生产 类属性: base_price ,默认为20元 实例方法create_Pizza(self): 利用pizza类实例化一个普通pizza 实例方法create create_SeaFoodPizza(self,seafood_type): seafood_type 代表海鲜类型,固定2种属性值: 1:龙虾(基础价格+50元),2:鲍鱼(基础价格+100) 根据传入的参数生产对应的海鲜pizza
下面是代码实现:
```python
# 定义Pizza类
class Pizza:
def __init__(self, price):
self.price = price
def show(self):
print(f"普通pizza制作完成,价格:{self.price}元,请慢用!")
# 定义SeaFoodPizza类,继承自Pizza类
class SeaFoodPizza(Pizza):
def __init__(self, price, seafood):
super().__init__(price)
self.seafood = seafood
def show(self):
print(f"海鲜pizza制作完成,材料为:{self.seafood},价格:{self.price}元,请慢用!")
# 定义PizzaManagement类
class PizzaManagement:
base_price = 20 # 类属性,基础价格为20元
def create_Pizza(self):
pizza = Pizza(self.base_price)
return pizza
def create_SeaFoodPizza(self, seafood_type):
if seafood_type == 1:
price = self.base_price + 50
seafood = "龙虾"
elif seafood_type == 2:
price = self.base_price + 100
seafood = "鲍鱼"
else:
print("无效的海鲜类型!")
return None
sea_food_pizza = SeaFoodPizza(price, seafood)
return sea_food_pizza
```
使用示例:
```python
# 创建PizzaManagement实例
pm = PizzaManagement()
# 创建普通pizza
pizza = pm.create_Pizza()
pizza.show()
# 创建海鲜pizza
sea_food_pizza = pm.create_SeaFoodPizza(1)
sea_food_pizza.show()
```
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