发布时间:2019-09-26 07:31:15编辑:auto阅读(1703)
员工信息表程序,实现增删改查操作:
可进行模糊查询,语法至少支持下面3种:
select name,age from staff_table where age > 22
select * from staff_table where dept = "IT"
select * from staff_table where enroll_date like "2013"
查到的信息,打印后,最后面还要显示查到的条数
可创建新员工纪录,以phone做唯一键,staff_id需自增
可删除指定员工信息纪录,输入员工id,即可删除
可修改员工信息,语法如下:
UPDATE staff_table SET dept="Market" where dept = "IT"
注意:以上需求,要充分使用函数,请尽你的最大限度来减少重复代码
staff_table (文本文件)
1 小名 21 13311022222 IT 2013-01-05
2 小红 23 13311033333 Market 2014-01-05
3 小童 25 13311044444 Market 2014-01-05
4 小张 27 13311055555 Market 2015-01-05
start.py (启动文件)
import os
import sys
BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
sys.path.append(BASE_DIR)
import conf,core
from core import main
main.main()
main.py (code文件)
#!/use/bin/env python
# -*- coding:utf-8 -*-
# Author:LT
import os
BASE_DATA = os.path.dirname(__file__)
BASE_DIR = os.path.join(BASE_DATA,'staff_table')
def sql_select():
'''
添加数据前检测staff_table是否为空
:return:
'''
with open(BASE_DIR, "r+", encoding="utf-8") as f:
line = f.read().strip()
return line
def select(): # 查询员工信息
'''
实现三条sql语句的查询方式
:return:
'''
msg = '''
请输入一下三种查询方式:
select name,age from staff_table where age > 22
select * from staff_table where dept = "IT"
select * from staff_table where enroll_date like "2013"
'''
print(msg)
user_choice = input("请输入您要查询的内容,输入b返回首页>>>:").strip()
user_choice_list = user_choice.split() # 写入列表
count = 0
if user_choice == "select name,age from staff_table where age > %s"%user_choice_list[-1]: #判断是那条查询语句
with open(BASE_DIR, "r", encoding="utf-8") as f:
for line in f:
if line =="\n": # 跳过文本中最后一行空格
continue
if line.split()[2] > user_choice_list[-1]: #判断数据库中大于用户输入的age
count =count+1 # 获取到的结果计数
print(line.split()[1],line.split()[2])
print("您查到了",count,"条记录")
return select()
elif user_choice == "select * from staff_table where dept = %s" %user_choice_list[-1]:
with open(BASE_DIR, "r", encoding="utf-8") as f:
for line in f:
if line =="\n":
continue
if line.split()[4] == user_choice_list[-1].split('"')[1]:
count = count + 1
print(line.strip())
print("您查到了", count, "条记录")
return select()
elif user_choice == "select * from staff_table where enroll_date like %s" %user_choice_list[-1]:
with open(BASE_DIR, "r", encoding="utf-8") as f:
for line in f:
if line =="\n":
continue
# 判断文本中的时间和用户查找的是否相等,相等输出结果
if line.split()[5].split("-")[0] == user_choice_list[-1].split('"')[1].split("-")[0]:
count = count + 1
print(line.strip())
print("您查到了", count, "条记录")
return select()
elif user_choice == "b" or user_choice =="B":
return main()
else:
print("请输入正确的查询命令")
return select()
def update(): # 修改员工信息
'''
修改部门名称
:return:
'''
msg = '''
请输入一下命令修改部门名称:
UPDATE staff_table SET dept="Market" where dept = "IT"
'''
print(msg)
user_choice = input("请输入修改命令,按b返回首页>>>:").strip()
if user_choice == "b" or user_choice =="B":
return main()
new_dept = user_choice.split("=")[1].split()[0] # 获取第一个等于号后" "的内容(包括"")
old_dept = user_choice.split("=")[-1] # 获取第二个等于号后" "的内容(包括"")
if user_choice == "UPDATE staff_table SET dept=%s where dept =%s"%(new_dept,old_dept):
staff_table_bak = os.path.join(BASE_DATA, 'staff_table_bak')
with open(BASE_DIR, "r", encoding="utf-8") as f,open(staff_table_bak, "w", encoding="utf-8") as fs:
for i in f: # 循环staff_table文件内容
if i =="\n":
continue
if old_dept.split('"')[1] in i.split()[4]: # 判断用户输入内容是否在staff_table文件中
i=i.replace(old_dept.split('"')[1],new_dept.split('"')[1]) # 修改staff_table文件内容
fs.write(i)
f.close()
fs.close()
os.remove(BASE_DIR) # 删除原文件staff_table
os.rename(staff_table_bak,BASE_DIR) # 新文件改名为staff_table
print("修改成功")
def add(): # 添加新员工
'''
添加新员工电话唯一用户输入重复的话需要重新输入新员工信息
:return:
'''
name = input("请输入员工姓名:")
age = input("请输入员工年龄:")
phone = input("请输入员工电话:")
dept = input("请输入员工部门:")
times = input("请输入员工入职时间:")
with open(BASE_DIR, "r+", encoding="utf-8") as fs:
lines = fs.readlines()
if sql_select() == "": # 判断是否有数据没有的话第一条记录ID为1
user_info = '''
1 %s %s %s %s %s
''' %(name,age,phone,dept,times)
userinfo = user_info.strip()
fs.write(str(userinfo + '\n'))
print("添加成功")
else:
tail = lines[-1].split() # 获取最后一条记录
staff_id = int(tail[0])+1 # 最后一条记录ID加1,为新的记录ID
user_info = '''
%s %s %s %s %s %s
''' %(staff_id,name,age,phone,dept,times)
for i in lines:
if phone in i.split()[3]: # 判断手机号是否存在
print("此手机号已存在,请重新输入员工信息")
return add()
else:
userinfo = user_info.strip()
fs.write(str(userinfo + '\n'))
print("添加成功")
break
def delete(): # 删除员工
'''
输入员工ID删除员工
:return:
'''
print(sql_select())
user_choice = input("请输入要删除的员工ID,按b返回首页>>>:").strip()
if user_choice == "b" or user_choice =="B":
return main()
staff_table_bak = os.path.join(BASE_DATA, 'staff_table_bak')
with open(BASE_DIR, "r", encoding="utf-8") as f, open(staff_table_bak, "w", encoding="utf-8") as fs:
for line in f:
if user_choice in line.split()[0]:
continue
fs.write(line)
f.close()
fs.close()
os.remove(BASE_DIR)
os.rename(staff_table_bak,BASE_DIR)
print("删除成功")
def main():
while True:
user_chioce = '''
1.查询员工信息
2.修改员工信息
3.添加新员工
4.删除员工
5.退出
'''
print(user_chioce)
user_choice = input("请输入你的选择:")
if user_choice.isdigit(): # 判断输入的是否数字类型
if user_choice == '1':
select() # 查询
elif user_choice == '2':
update() # 修改
elif user_choice == '3':
add() # 添加
elif user_choice == '4':
delete() # 删除
elif user_choice == '5':
exit("再见") # 退出
else:
print("请输入正确的选项")
else:
print("请输入正确的选项")
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