python简单学生成绩管理

#!/usr/bin/env python
#manage the grade of student
def init(date):
    date=[[],[],[],[],[]]
    return date

def store(date):
    ID=raw_input('Please your ID:')
    name=raw_input('Please your name:')
    english=raw_input('Please your english:')
    math=raw_input('Please your math:')
    science=raw_input('Please your science:')
    date[0].append(ID)
    date[1].append(name)
    date[2].append(english)
    date[3].append(math)
    date[4].append(science)

def printone(date,key):
    print "ID:%s,name:%s,english:%s,math:%s,science:%s" % (date[0][key],date[1][key],date[2][key],date[3][key],date[4][key])
def printbyid(date):
    number=-1
    count=0
    key=raw_input('Please enter your ID')
    for i in date[0]:
        if key==i:
            number=i
            break
        count+=1
    if number==-1:
        print 'None'
    else:
        printone(base,count)
def printbyname(date):
    number=-1
    count=0
    countadd=[]
    key=raw_input('Please enter your name')
    for i in date[1]:
        if i==key:
            number=i
            countadd.append(count)
        count+=1
    if number==-1:
        print 'None'
    else:
        for j in countadd:
            printone(base,j)
def alterbyid(date):
    number=-1
    count=0
    key=raw_input('Please enter your ID')
    for i in date[0]:
        if key==i:
            number=i
            break
        count+=1
    if number==-1:
        print 'None'
    else:
        date[1][count]=raw_input('Please your name:')
        date[2][count]=raw_input('Please your english:')
        date[3][count]=raw_input('Please your math:')
        date[4][count]=raw_input('Please your science:')

def allprint(date):
    count=len(date[0])
    if count==0:
        print'None'
    else:
        for i in range(count):
            printone(base,i)
def deletebyid(date):
    number=-1
    count=0
    key=raw_input('Please enter your ID')
    for i in date[0]:
        if key==i:
            number=i
            break
        count+=1
    if number==-1:
        print 'None'
    else:
        base[0].pop(count)
        base[1].pop(count)
        base[2].pop(count)
        base[3].pop(count)
        base[4].pop(count)

base=[]
base=init(base)
print'''s:store
pd:printbyid
pe:printbyname
ay:alterbyid
ap:allprint
dd:deletebyid
other:quit
'''
while True:
    choose=raw_input('Please choose a function:')
    if choose=='s':
        store(base)
    elif choose=='pd':
        printbyid(base)
    elif choose=='pe':
        printbyname(base)
    elif choose=='ay':
        alterbyid(base)
    elif choose=='ap':
        allprint(base)
    elif choose=='dd':
        deletebyid(base)
    else:
        break