#!/usr/bin/env python# @Time  : 2018/3/30 17:37# @Author : KiritoLiu# @Contact : kiritoliuyhsky@gmail.com# @Site  :# @File  : 學生信息管理系統.py# @Software: PyCharmimport pymysqlimport datetimeimport re def CalAge(Date):  #生日（年月日（數據庫中的））轉換為年齡  if Date == "NULL":    return "無"  try:    Date = Date.split('-')    Birth = datetime.date(int(Date[0]), int(Date[1]), int(Date[2]))    Today = datetime.date.today()    if (Today.month > Birth.month):      NextYear = datetime.date(Today.year + 1, Birth.month, Birth.day)    elif (Today.month < Birth.month):      NextYear = datetime.date(Today.year, Today.month + (Birth.month - Today.month), Birth.day)    elif (Today.month == Birth.month):      if (Today.day > Birth.day):        NextYear = datetime.date(Today.year + 1, Birth.month, Birth.day)      elif (Today.day < Birth.day):        NextYear = datetime.date(Today.year, Birth.month, Today.day + (Birth.day - Today.day))      elif (Today.day == Birth.day):        NextYear = 0    Age = Today.year - Birth.year    if NextYear == 0: #如果今天就是生日      return "%d" % (Age)    else:      DaysLeft = NextYear - Today      return "%d" % (Age)  except:    return "錯誤" def seesql():  #查看學生表數據庫  db = pymysql.connect(host="localhost", user="root", password="123456", db="stu", charset="utf8")  # 創建游標對象  cursor = db.cursor()  sql = "select s.sno,s.name,s.sex,s.cla,s.tel,s.birthday from stu s order by sno"  # 用sno（學號）排序查看學生名單  try:    m = cursor.execute(sql)    alist = cursor.fetchall()    print("{:>3}|/t{:<4}/t|{}|/t{:<3}/t/t| {:<8}|{}| {}".format("學號", "姓名", "性別", "班級", "電話", "年齡", "出生日期"))    for vo in alist:      birth = vo[5]      bir = birth.strftime("%Y-%m-%d")      if bir == "1949-10-01":        bir = "NULL"      print("{:>5}|/t{:<4}/t| {} |/t{:<10}/t|{:<11}| {} | {}".format(vo[0], vo[1], vo[2], vo[3], vo[4], CalAge(bir), bir))    db.commit()  except Exception as err:    db.rollback()    print("SQL查看失敗！錯誤：", err)  db.close() def seeone(a):  #根據學號，查看某一條數據  db = pymysql.connect(host="localhost", user="root", password="123456", db="stu", charset="utf8")  # 創建游標對象  cursor = db.cursor()  stuid =int(a)  sql = "select s.sno,s.name,s.sex,s.cla,s.tel,s.birthday from stu s where s.sno = '%d'" % stuid  try:    m = cursor.execute(sql)    b = cursor.fetchone()    if b == None:      print("您的輸入有誤，將會退出系統")      quit()    else:      print("{:>3}|/t{:<4}/t|{}|/t{:<3}/t/t| {:<8}|{}| {}".format("學號", "姓名", "性別", "班級", "電話", "年齡", "出生日期"))      birth = b[5]      bir = birth.strftime("%Y-%m-%d")      if bir == "1949-10-01":        bir = "NULL"      print("{:>5}|/t{:<4}/t| {} |/t{:<10}/t|{:<11}| {:<2} | {}".format(b[0], b[1], b[2], b[3], b[4], CalAge(bir), bir))    db.commit()  except Exception as err:    db.rollback()    print("SQL查詢失敗！錯誤：", err)  db.close() def addmql():  #添加一條數據  db = pymysql.connect(host="localhost", user="root", password="123456", db="stu", charset="utf8")  # 創建游標對象  cursor = db.cursor()  sql = "select s.sno from stu s"  cursor.execute(sql)  alist = cursor.fetchall()    #此處讀取數據庫中的所有學號  blist = ()           #建立一個空的元組用于存放學號  print("以下學號已被占用，不可使用：")  for i in alist:    blist += i         #存放所有的學號    print(i[0], end=" ")    #輸出已經被使用過的學號  print()  sno = int(input("請輸入添加的學員的學號:/n"))  if sno in blist:        #判斷學號是否被使用過，學號不可以重復    print("您輸入的學號已被占用！系統即將退出！")    quit()  sname = input("請輸入添加的學員的姓名:/n")  sex = input("請輸入添加的學員的性別(男or女):/n")  if sex == "男" or sex == "女":    sex = sex  else:    sex = "男"    print("性別輸入有誤,已默認為男")  cla = input("請輸入添加的學員的班級(例：Python01):/n")  tel = input("請輸入添加的學員的電話:/n")  if tel == re.search(r"(1[3456789]/d{9})", tel):    tel = tel    print("電話輸入錯誤，已重置為空")  else:    tel = ""  sbir = input("請輸入添加的學員的出生日期(例:2001-1-1):/n")  if sbir == re.search(r"(/d{4}-/d{1,2}-/d{1,2})", sbir):    sbir = sbir  else:    sbir = "1949-10-01"    print("出生日期輸入錯誤，已重置為初始值")  sql = "Insert into stu(sno,name,sex,cla,tel,birthday) values('%d', '%s', '%s', '%s', '%s', '%s')"%(sno, sname, sex, cla, tel, sbir)  try:    m = cursor.execute(sql)    # 事務提交    db.commit()    print("成功添加條數：", m)    print("您添加的信息為:")    seeone(sno)  except Exception as err:    db.rollback()    print("SQL添加失敗！錯誤：", err)  db.close() def updatasql():  #更新修改某條數據  db = pymysql.connect(host="localhost", user="root", password="123456", db="stu", charset="utf8")  # 創建游標對象  cursor = db.cursor()  stuid = int(input("請輸入要修改的學員的學號：/n"))    # 一個班不超過100人，以stuid作為索引  try:    seeone(stuid)    print("======可修改的學員信息的名稱======")    print("{0:2}{1:5}{2:5}{3:5}".format(" ", "1.姓名", "2.性別", "3.班級"))    print("{0:2}{1:5}{2}".format(" ", "4.電話", "5.出生日期"))    a = int(input("請選擇要修改的學員信息的名稱(學號不可修改):/n"))    if a == 1:      xm = input("請輸入修改后的姓名：/n")      sql = "UPDATE stu s SET s.name = '%s' WHERE s.sno = '%d'" % (xm, stuid)    elif a == 2:      xb = input("請輸入修改后的性別(男or女):/n")      if xb == "男" or xb == "女":        xb = xb      else:        xb = "男"        print("性別輸入有誤,已默認為男")      sql = "UPDATE stu s SET s.sex = '%s' WHERE s.sno = '%d'" % (xb, stuid)    elif a == 3:      bj = input("請輸入修改后的班級:/n")      sql = "UPDATE stu s SET s.cla = '%s' WHERE s.sno = '%d'" % (bj, stuid)    elif a == 4:      dh = input("請輸入修改后的電話:/n")      sql = "UPDATE stu s SET s.tel = '%s' WHERE s.sno = '%d'" % (dh, stuid)      if dh == re.search(r"(1[3456789]/d{9})", dh):        '''正則表達式匹配判斷輸入是否合格'''        dh = dh      else:        dh = ""        print("電話輸入錯誤，已重置為空")    elif a == 5:      birday = input("請輸入修改后的出生日期(格式：2000-1-1):")      if birday == re.search(r"(/d{4}-/d{1,2}-/d{1,2})", birday):        '''正則表達式匹配判斷輸入是否合格'''        birday = birday      else:        birday = "1949-10-01"        print("出生日期輸入錯誤，已重置為初始值")      sql = "UPDATE stu s SET s.birthday = '%s' WHERE s.sno = '%d'" % (birday, stuid)    else:      print("您的輸入有誤，將會退出！") # 此處退出防止某些誤操作導致的數據庫數據泄露      quit()    cursor.execute(sql)    db.commit()    print("修改后的該學員信息為：")    seeone(stuid)  except Exception as err:    db.rollback()    print("SQL修改失敗！錯誤：", err)  db.close() def delsql():  #刪除某條學生數據  db = pymysql.connect(host="localhost", user="root", password="123456", db="stu", charset="utf8")  # 創建游標對象  cursor = db.cursor()  stuid = int(input("請輸入要刪除的學員的學號：/n")) # 一個班不超過100人，以stuid作為索引  try:    print("======即將刪除的學員信息的名稱======")    seeone(stuid)    a = input("請確認是否刪除該學員信息(y/n):/n")    if a == 'y' or a == 'Y':      sql = "delete from stu where sno = '%d'"%(stuid)      cursor.execute(sql)    else:      print("取消學員信息刪除，即將退出系統")      quit()    db.commit()    print("該學員信息已刪除")  except Exception as err:    db.rollback()    print("SQL刪除失敗！錯誤：", err)  db.close() def mainstu():  while True:    # 輸出初始界面    print("=" * 12, "學員信息管理系統", "=" * 15)    print("{0:2}{1:13}{2:15}".format(" ", "1.查看學員信息", "2.添加學員信息"))    print("{0:2}{1:13}{2:15}".format(" ", "3.修改學員信息", "4.刪除學員信息"))    print("{0:2}{1:13}".format(" ", "5.退出系統"))    print("=" * 45)    key = int(input("請輸入對應的選擇:/n"))    # 根據鍵盤值判斷并進行操作    if key == 1:      print("=" * 12, "學員信息瀏覽", "=" * 15)      seesql()      input("按回車繼續")    elif key == 2:      print("=" * 12, "學員信息添加", "=" * 15)      addmql()      input("按回車繼續")    elif key == 3:      print("=" * 12, "學員信息修改", "=" * 15)      seesql()      updatasql()      input("按回車繼續")    elif key == 4:      print("=" * 12, "學員信息刪除", "=" * 15)      seesql()      delsql()      input("按回車繼續")    elif key == 5:      print("=" * 12, "再見", "=" * 12)      quit()    else:      print("=" * 12, "您的輸入有誤，請重新輸入", "=" * 12) mainstu()

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