Python自动化开发—EX.6(员工信息表查询)

Posted 2020-12-31 dashuang

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 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

import sys,os
#打印初始界面
def menu():
    info = ‘‘‘
    ==========员工信息表==========

    1、增加员工信息
    2、删除员工信息
    3、修改员工信息
    4、查询员工信息
    5、退出
    =============================
    ‘‘‘
    print(info)
#读取员工信息列表
def view_file():
    staff_list = []
    with open(‘staff_table‘, ‘r‘, encoding=‘utf-8‘) as staff_f:
        for i in staff_f:
            i = i.strip(‘
‘).split(‘,‘)
            staff_list.append(i)
        #print(staff_list)
    return staff_list
#最新的员工信息列表写入文件
def write_file(staff_list):
    with open(‘staff_table‘,‘w‘,encoding=‘utf-8‘) as staff_f:
        for i in staff_list:
            i = ‘,‘.join(i) + ‘
‘
            staff_f.write(i)



def add():
    print(‘=*=‘ * 20)
    print("添加的内容格式请按照: Alex Li,25,13651054608,IT,2015-10-29")
    print(‘=*=‘ * 20)
    staff_list = view_file()
    addInfo = input("add staff_table ").strip()
    addInfo_list = addInfo.split(‘,‘)
    if len(addInfo_list) == 5:
        phone_list = []
        for i in staff_list:
            phone_list.append(i[3])
        if addInfo_list[2] in phone_list:
            print("phone 号码已存在，此次添加无效！")
        else:
            max_id = int(staff_list[-1][0])
            add_id = max_id+1
            addInfo_list.insert(0,add_id)
            addInfo_list[0] = str(addInfo_list[0])
            staff_list.append(addInfo_list)
            write_file(staff_list)
            print("以下员工信息已添加成功！")
            print(‘,‘.join(addInfo_list))
    else:
        print("%s为无效的输入！" % addInfo)

def delete():
    print(‘=*=‘ * 20)
    print("请输入您想要删除员工的staff_id")
    staff_list = view_file()
    id = input(‘del from staff where  id = ‘).strip()
    if id.isdigit():
        id = int(id)
        delete_list = []
        max_id = int(staff_list[-1][0])#员工信息表最长ID
        if id <= max_id:
            for i,k in enumerate(staff_list):
               if int(k[0]) == id:
                   delete_list.append(k)
                   del staff_list[i]
            if len(delete_list) == 0:
                    print("staff_ID为%d的员工不存在..." % id)
            else:
                    print("以下员工已被删除成功！")
                    for i in delete_list:
                        #print(i)
                        print(‘,‘.join(i))
            write_file(staff_list)
        else:
            print("staff_id:%d 不存在！" % id)
    else:
        print("%s为无效的输入..." % id)

def update():
    pass
    update_info = ‘‘‘
        =*==*==*==*==*==*==*==*==*==*==*==*==*==*==*==*==*==*==*==*=
        只有age和dept能被修改，修改语句如下(请任选以下修改语句):
        1、UPDATE staff_table SET dept="Market" WHERE  dept = "IT" 
        2、UPDATE staff_table SET age=25 WHERE  name = "Alex Li"  
        ‘‘‘
    print(update_info)
    staff_list = view_file()
    update_choice = input("您想根据什么修改信息？(name or dept)：").strip()
    if update_choice == ‘dept‘:
        old_dept = input("请输入修改条件dept：").strip()
        new_dept = input("请输入修改之后dept的值：").strip()
        updateDept_list = []
        for i in staff_list:
            if i[4] == old_dept:
                i[4] = new_dept
                updateDept_list.append(i)
        if len(updateDept_list) > 0:
            print("以下信息已经修改成功！")
            for i in updateDept_list:
                print(‘,‘.join(i))
            write_file(staff_list)
        else:
            print("%s不存在！" % old_dept)
    elif  update_choice == ‘name‘:
        Name = input("请输入修改条件name的值：").strip()
        new_age = input("请输入修改后的age：").strip()
        updateAge_list = []
        for i in staff_list:
            if i[1] == Name:
                i[2] = new_age
                updateAge_list.append(i)
        if len(updateAge_list) > 0:
            print("以下信息已经修改成功！")
            for i in updateAge_list:
                print(‘,‘.join(i))
            write_file(staff_list)
        else:
            print("%s不存在！" % Name)

def find():
    find_info = ‘‘‘
       =*==*==*==*==*==*==*==*==*==*==*==*==*==*==*==*==*==*==*==*=
       本系统支持以下三种查询方法(查询条件分别为：age、dept、enroll_date):
       1、find name,age from staff_table where age > 22
       2、find * from staff_table where dept = "IT"
       3、find * from staff_table where enroll_date like "2013"    
       ‘‘‘
    print(find_info)
    staff_list = view_file()
    find_choice = input("您想使用哪种方法查询员工信息(请填写查询条件)：").strip()
    if find_choice == ‘dept‘:
        find_dept = input("find * from staff_table where dept = ")
        findDept_list = []
        for i in staff_list:
            if i[4] == find_dept:
                findDept_list.append(i)
        if len(findDept_list) > 0:
            print("符合条件的信息如下：")
            for i in findDept_list:
                print(‘,‘.join(i))
        else:
            print("无dept为%s的员工信息！" % find_dept)
    elif find_choice == ‘age‘:
        find_age = input("find * from staff_table where age > ")
        findAge_list = []
        for i in staff_list:
            if int(i[2]) > int(find_age):
                findAge_list.append(i)
        if len(findAge_list) > 0:
            print("符合条件的信息如下：")
            for i in findAge_list:
                print(‘,‘.join(i))
        else:
            print("无age大于%s的员工信息！" % find_age)
    elif find_choice == ‘enroll_date‘:
        findEnroll_date = input("find * from staff_table where enroll_date like ")
        findEnroll_date_list = []
        for i in staff_list:
            i_date = i[5]
            i_date = i_date.split(‘-‘)[0]
            if i_date == findEnroll_date:
                findEnroll_date_list.append(i)
        if len(findEnroll_date_list) > 0:
            print("符合条件的信息如下：")
            for i in findEnroll_date_list:
                print(‘,‘.join(i))
        else:
            print("Enroll_date为%s 的信息不存在！" % findEnroll_date)
    else:
        print("%s为无效的输入！" % find_choice)

def main():
    while True:
        menu()
        choice = input("请选择:").strip()
        if choice == ‘1‘:
            add()
        elif choice == ‘2‘:
            delete()
        elif choice == ‘3‘:
            update()
        elif choice == ‘4‘:
            find()
        elif choice == ‘5‘:
            sys.exit("logout......")
        else:
            print("无效的输入！")

#write_file(view_file())
staff_list = view_file()
print(staff_list)
main()

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