python学生管理系统代码实现


            本文实例为大家分享了python学生管理系统的具体代码，供大家参考，具体内容如下

类







class Student: 

 stuID = "" 

 name = "" 

 sex = "M" 

 classID = "NULL" 

  

 #set ID 

 def setStuID(self,stuID): 

  self.stuID = stuID 

  

 def setName(self,name): 

  self.name = name 

  

 def setSex(self,sex): 

  self.sex = sex 

   

 def setClassID(self,classID): 

  self.classID = classID 

  

 def getStuId(self): 

  return self.stuID 

  

 def getName(self): 

  return self.name 

  

 def getSex(self): 

  return self.sex 

  

 def getClassID(self): 

  return self.classID 





主函数





import os 

import re 

import sys 

import string 

import student 

 

#save file 

global FILEPATH 

FILEPATH = "student.db" 

#temporary file 

global TEMPFILE 

TEMPFILE = "temp.db" 

 

#This is menu 

def menu(): 

 while True : 

  print "1.Add a student information" 

  print "2.Query student information" 

  print "3.Delete a student information" 

  print "0.Quit" 

  opt = raw_input("Select:") 

  if opt == "1": 

   while True: 

    addStudent() 

    opt2 = raw_input("Continue Add(Y/N)?:") 

    if opt2 == "Y" or opt2 == "y" or opt2 == "": 

     continue 

    else: 

     break 

  elif opt == "2": 

   while True: 

    query() 

    opt2 = raw_input("Continue Query(Y/N)?:") 

    if opt2 == "Y" or opt2 == "y" or opt2 == "": 

     continue 

    else: 

     break    

  elif opt == "3": 

   while True: 

    delMenu() 

    opt2 = raw_input("Continue Delete(Y/N)?:") 

    if opt2 == "Y" or opt2 == "y" or opt2 == "": 

     continue 

    else: 

     break    

  elif opt == "0" : 

   exitProgram()  

   break 

  else: 

   print "Error input" 

     

#Add a student 

def addStudent() : 

 stu = student.Student() 

 while True: 

  stuID = raw_input("ID(001-999):") 

  #match ID 001-999 

  p = re.match("^[0-9]{3}$", stuID) 

  if p : 

   if stuID == "000": 

    print "ID must be 001-999" 

    continue 

   if isIDExist(stuID): 

    print "ID = %s already exist!" % stuID 

    continue 

   else :  

    stu.setStuID(stuID) 

   break 

  else: 

   print "ID must be 001-999" 

  

 while True:   

  stuName = raw_input("Name(a-z,A-Z,5 char):") 

  #match name a-z A-Z 5 char 

  p = re.match("^[a-zA-Z]{1,5}$",stuName) 

  if p : 

   stu.setName(stuName) 

   break 

  else : 

   print "Name format error must a-z,A-Z,within 5 char" 

  

 while True:  

  stuSex = raw_input("Sex(default is M):") 

  #default value 

  if stuSex == "": 

   stu.setSex("M") 

   print "Sex:M" 

   break 

  if stuSex =="M" or stuSex == "m": 

   stu.setSex(string.upper(stuSex)) 

   break    

  #if stuSex == "M" or stuSex == "m" || stuSex == "F" stuSex == "f": 

  p = re.match("^M|m|F|f$",stuSex) 

  if p : 

   stu.setSex(string.upper(stuSex)) 

   break 

  else : 

   print "Sex(M/f)" 

   

 while True: 

  stuClass = raw_input("Class(01-99):") 

  #default value 

  if stuClass == "": 

   stu.setClassID("NULL") 

   print "CLASS:NULL" 

   break 

  #match 00-99 

  p = re.match("^[0-9]{2}$",stuClass) 

  if p : 

   #get rid of 00 

   if stuClass == "00": 

    print "Class must 01-99" 

    continue 

   stu.setClassID(stuClass) 

   break 

  else: 

   print "Class must 01-99" 

 #save to file   

 file1 = open(FILEPATH,"a") 

 print "ID\tNAME\tSEX\tCLASS" 

 print stu.getStuId(),"\t",stu.getName(),"\t",stu.getSex(),"\t",stu.getClassID() 

 file1.write(stu.getStuId()+"\t"+stu.getName()+"\t"+stu.getSex()+"\t"+stu.getClassID()+"\n") 

 print "Add student success!" 

 file1.close() 

 

#Delete student menu  

def delMenu(): 

 print "1.Delete by ID" 

 print "2.Delete contains ID" 

 opt = raw_input("Select:") 

 if opt == "1": 

  delStudentByID() 

 elif opt == "2": 

  delStudentContainsID() 

 else: 

  print "Error input"  

   

#Delete contains id   

def delStudentContainsID(): 

 contID = raw_input("ID:") 

 if getInfoContainsID(contID)==0 : 

  print "Can't find ID contains \"%s\" student" % contID 

  return 

 opt = raw_input("Are you sure delete all(Y/N):") 

 if not opt == "y" or opt == "Y": 

  return  

 f = open(FILEPATH,"r") 

 tmp = open(TEMPFILE,"a") 

 i=0 

 for eachLine in f: 

  items = eachLine.split("\t") 

#  if not re.match(contID, items[0]): 

  if items[0].count(contID) ==0: 

   tmp.write(eachLine) 

  else: 

   i+=1  

 f.close() 

 tmp.close() 

 os.remove(FILEPATH) 

 os.rename(TEMPFILE, FILEPATH) 

 print "Deleted %d data" % i 

 

#get contains ID information     

def getInfoContainsID(stuID): 

 f = open(FILEPATH) 

 i=0 

 for eachLine in f: 

  items = eachLine.split("\t") 

   

  if not items[0].count(stuID) ==0: 

#  if re.match(stuID,items[0]): 

   i+=1 

   if i==1: 

    print "ID\tNAME\tSEX\tCLASS" 

   print eachLine, 

 if i==0: 

  return 0 

 else : 

  return i 

 f.close() 

   

#Delete student by ID  

def delStudentByID(): 

 delID = raw_input("Delete ID:") 

 if not isIDExist(delID) : 

  print "Can't find ID = %s student information" % delID 

  return 

  

 getInfoByID(delID) 

 opt = raw_input("Are you sure delete it(Y/N):") 

 if not (opt == "Y" or opt == "y"): 

  return 

  

 f = open(FILEPATH,"r") 

 tmp = open(TEMPFILE,"a") 

  

 for eachLine in f: 

  split = eachLine.split("\t")   

  if not delID == split[0]: 

   tmp.write(eachLine)      

 tmp.close() 

 f.close() 

 os.remove(FILEPATH) 

 os.rename(TEMPFILE, FILEPATH) 

 print "Delete success!" 

 

#Query menu  

def query(): 

 print "1.Query student by ID" 

 print "2.Query all students" 

 opt = raw_input("Select:") 

 if opt == "1": 

  queryByID() 

 elif opt == "2": 

  queryAll() 

 #default is query all  

 elif opt == "": 

  queryAll()  

 else : 

  print "Error Input!"  

   

#query ID exist 

def isIDExist(ID): 

 f = open(FILEPATH) 

 flag = 0 

 for eachline in f: 

  temp = eachline.split("\t") 

  if temp[0] == ID: 

   flag+=1 

 f.close() 

 if flag == 0 : 

  return False 

 else: 

  return True 

  

#get information by ID for delete student  

def getInfoByID(stuID): 

 f = open(FILEPATH) 

 i=0 

 for eachLine in f: 

  items = eachLine.split("\t") 

  if items[0] == stuID: 

   i+=1 

   if i==1: 

    print "ID\tNAME\tSEX\tCLASS" 

   print eachLine  

 f.close()   

  

#Query student by ID 

def queryByID(): 

 queryID = raw_input("ID:") 

 f = open(FILEPATH) 

# lines = f.readlines() 

# print lines[0].strip() 

# for line in lines: 

#  a = line.split() 

#  if queryID == a[1].strip(): 

#   print line.strip() 

 flag = 0 

 for eachline in f: 

  #split by "\t" get as C array temp[4] 

  temp = eachline.split("\t") 

#  print temp[0] , temp[1] , temp[2] , temp[3] 

  if temp[0] == queryID: 

   flag+=1 

   if flag == 1: 

    print "ID\tNAME\tSEX\tCLASS" 

   print eachline, 

 if flag == 0 : 

  print "Can't find ID = %s student information" % queryID   

 f.close() 

# f = open(FILEPATH) 

# readLines = f.readlines() 

  

# for eachLine in f: 

#  eachLine 

#     

#  if eachLine == queryID: 

#   print eachLine 

# f.close() 

 

#Query all students  

def queryAll(): 

 f = open(FILEPATH,"r") 

 i=0 

 for eachLine in f: 

  i+=1 

  if i==1: 

   print "ID\tNAME\tSEX\tCLASS" 

  print eachLine, 

 f.close() 

 if i==0: 

  print "No data!" 

 

def exitProgram(): 

 print "Thank you Bye!" 

# sys.exit() 

  

def init(): 

 if os.path.exists(FILEPATH) : 

  print "Load file successful" 

 else: 

  try: 

   f = open(FILEPATH,"w") 

  except Exception: 

   print "Can't open file" 

   sys.exit() 

  finally: 

   f.close() 

  

if __name__ == '__main__': 

 init() 

 menu() 







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