Python实现仓库管理系统
本文实例为大家分享了Python实现仓库管理系统的具体代码，供大家参考，具体内容如下
注意：在Linux环境运行
代码
#!/usr/bin/env python
# -*- coding:utf-8 -*-
# @FileName :store_system.py
# @Time :2020/3/3 23:10
# @Author :anqixiang
# @Function :模拟仓库管理系统
'''
1.商品清单保存在/opt/shop_info.txt文件中
2.可以查看、增加、删除商品和修改商品价格
3.在任何位置输入b返回上级菜单，输入q退出
'''
import os
from subprocess import run
#输出颜色
def cecho(num,content):
print('\033[%sm%s\033[0m' %(num, content))
#选b返回上一层，选q退出
def choice_action(action):
while action != "b":
if action == "q":
exit(0)
else:
break
return action
#展示商品
def view_shop(file_name):
commodity = [] #所有商品保存到该列表
if not os.path.isfile(file_name):
os.mknod(file_name)
else:
with open(file_name, 'r') as file:
for each in file:
commodity.append(each.splitlines())
if len(commodity) == 0:
cecho(35, "货仓空空如也，请速速添加商品！")
#打印商品信息
else:
print('%-10s%-8s%-12s' % ('序号', '名字', '价格'))
for index, value in enumerate(commodity):
alist = value[0].split(":") #把字符串转成列表，以“:”分割
print('%-12s%-10s%-8s' % (index + 1, alist[0], alist[1]))
return commodity
#增加商品,每增加一个就保存到文件
def add_shop(file_name):
while True:
add_dict = {}
shop_name = input(">>>输入商品名:").strip()
if choice_action(shop_name) == "b":
break
shop_price = input(">>>输入商品价格(元):").strip()
if choice_action(shop_price) == "b":
break
elif shop_price.isdigit():
add_dict[shop_name] = shop_price #商品名作key，价格作值，存入字典
for i in add_dict:
with open(file_name, 'a+')as file:
file.write('%s:%s\n' % (i, add_dict[i]))
print("\033[92m%s存入成功\033[0m" % shop_name)
view_shop(file_name)
else:
cecho(31, "Invalid Option")
#删除商品
def del_shop(file_name):
menu_info = "商品清单"
print(menu_info.center(26,'-'))
commodity = view_shop(file_name)
while True:
del_num = input(">>>商品序号:").strip()
if choice_action(del_num) == "b":
break
elif del_num.isdigit():
del_num = int(del_num)
rc = run("sed -i '/%s/d' %s" % (commodity[del_num-1][0], file_name), shell=True)
if not rc.returncode:
cecho(92, "删除成功")
else:
cecho(31,"删除失败")
view_shop(file_name)
else:
cecho(31, "Invalid Option")
#修改商品价格
def update_price(file_name):
menu_info = "商品清单"
print(menu_info.center(26,'-'))
commodity = view_shop(file_name)
while True:
update_num = input(">>>商品序号:").strip()
if choice_action(update_num) == "b":
break
elif update_num.isdigit():
update_num = int(update_num)
else:
cecho(31, "Invalid Option")
new_price = input(">>>新的价格(元):").strip()
if choice_action(new_price) == "b":
break
elif new_price.isdigit():
new_price = int(new_price)
alist = commodity[update_num-1][0].split(':') #将商品名和价格转成一个列表,如['coffee', '30']
alist[1] = new_price #修改价格
rc = run("sed -i '/%s/c %s:%s' %s" % (alist[0], alist[0], alist[1], file_name), shell=True)
if not rc.returncode:
cecho(92, "修改成功")
else:
cecho(31,"修改失败")
view_shop(file_name)
else:
cecho(31, "Invalid Option")
#主程序
def show_menu():
cmds = {'0': view_shop, '1': add_shop, '2': del_shop, '3': update_price}
prompt = '''(0)查看商品信息
(1)增加商品
(2)删除商品
(3)修改商品价格
(b)返回上级菜单
(q)退出
输入(0/1/2/3/b/q):'''
fname='/opt/shop_info.txt' #保存商品信息
while True:
choice = input(prompt).strip()
if choice not in '0123bq':
cecho(31, "Invalid Option")
elif choice_action(choice) == "b":
cecho(31, "已经是第一级菜单")
else:
cmds[choice](fname)
if __name__ == "__main__":
try:
show_menu()
except KeyboardInterrupt as e:
print()
cecho(31, "非正常退出,请下次输入字母q进行退出！")
效果图
