Nov-04-2019, 06:13 AM
For the file attached below, add the following two functions to the code.
1. A search by programme ID function. When this function is selected, a user can use the programme ID as the searching keyword to search all the students who have that programme ID. If found, the student's IDs and names will be displayed, otherwise, no found should be reported.
2. A history of search function. When this function is selected, a user can display previous searching results of "searching by student ID" function, up to the five searches. The display should contain the student IDs and student names. If there are no five previous searches, the function should inform the user.
I am new in Python and need some tips to do this exercise, hope that someone can help!!
File: students.py
File: listm.py
1. A search by programme ID function. When this function is selected, a user can use the programme ID as the searching keyword to search all the students who have that programme ID. If found, the student's IDs and names will be displayed, otherwise, no found should be reported.
2. A history of search function. When this function is selected, a user can display previous searching results of "searching by student ID" function, up to the five searches. The display should contain the student IDs and student names. If there are no five previous searches, the function should inform the user.
I am new in Python and need some tips to do this exercise, hope that someone can help!!
File: students.py
from listm import *
from studentm import *
students = List()
choice = menu()
while (choice!=0):
if (choice == 1):
print("This function will return the size of the list")
listlen = length(students)
print(f"The size of the student list is {listlen}.")
print("Press enter to continue.")
input('')
elif (choice == 2):
print("This function appends a new record on the end of the list")
student = inputstinfo()
insert(students, length(students)+1, student)
print("The appending function is done.")
print("Press enter to continue.")
input('')
elif (choice == 3):
print("This function insert a new record in the corresponding position")
print("Please input the position:", end='')
position = int(input())
student = inputstinfo()
insert(students, position, student)
print("The insertion function is done.")
print("Press enter to continue.")
input('')
elif (choice == 4):
print("This function delete a record in the specified position")
print("Please input the position:", end='')
position = int(input())
delete(students, position)
print("The deletion function is done.")
print("Press enter to continue.")
input('')
elif (choice == 5):
print("This funtion locate a record based on student ID")
print("Please input the student id:", end='')
sid = input()
position = locatebyid(students, sid)
if position < 0:
print(f"Student with sid={sid} does not exist.")
else:
print(f"Student with sid={sid} is at position {position}")
print("The locate function is done.")
print("Press enter to continue.")
input('')
elif (choice == 6):
print("This function display the record in specified position")
print("Please input the position:", end='')
position = int(input())
student = get(students, position)
if student != -1:
displaystinfo(student)
else:
print(f"There is no student at position {position}")
print("The get function is done.")
print("Press enter to continue.")
input('')
elif (choice == 7):
print("This function diplay all the record in the list")
for student in students.lst:
displaystinfo(student)
print("The display function is done.")
print("Press enter to continue.")
input('')
elif (choice == 8):
print("This is the search by programme function")
print("Please input the programme ID:", end ='')
pid = String(input())
student = get(students, pid)
if student != -1:
searchProgram(student)
else:
print(f"There is no student studying at this programme")
print("Press enter to continue.")
input('')
elif (choice == 9):
print("This is the history search function")
print("Under construction.")
print("Press enter to continue.")
input('')
elif (choice == 10):
print("This is my own function")
elif (choice == 0):
print("Now quit, thank you!")
choice = menu()File: studentm.pyclass Student:
def __init__(self, sid=None, name=None, gender=None, pid=None):
if sid is None:
self.id = ""
else: self.id = sid
if name is None:
self.name = ""
else:
self.name = name
if gender is None:
self.gender = ""
else:
self.gender = gender
if pid is None:
self.pid = ""
else:
self.pid = pid
def menu():
print("\n")
print("\n")
print("\n")
print(" Please type 1-8 for student record action")
print(" 1 - Return the size of the list")
print(" 2 - Append a new record at the end")
print(" 3 - Insert a new record at position i")
print(" 4 - Delete the record at position i")
print(" 5 - Locate a record based on student ID")
print(" 6 - Display the record at position i")
print(" 7 - Display all the records")
print(" 8 - Search by programme")
print(" 9 - Search history")
print(" 0 - Quit")
print("\n")
print(" Your choice: ", end='')
choice=int(input())
print("\n")
print("\n")
print("\n")
return choice
def inputstinfo():
sid = input("Please input the student's id: ")
name = input("Please input the student's name: ")
gender = input("Please input the student's gender: ")
pid = input("Please input the student's program id: ")
tmps = Student(sid, name, gender, pid)
return tmps;
def displaystinfo(student):
print(f"The student's info are: {student.id}, {student.name}, {student.gender}, {student.pid}.")
def searchProgram(student):
print(f"The student who participanted in this programme is: {student.id}, {student.name}.") File: listm.py
class List:
def __init__(self, lst=None):
if lst is None:
self.lst = []
else:
self.lst = lst
def length(l):
return len(l.lst)
def isempty(l):
if len(l.lst)==0:
return True
else:
return False
def get(l, i):
if isempty(l):
print("The get() is unsuccessful!")
print("The list is empty!")
return -1
elif (i<1) or (i>length(l)):
print("The get() is unsuccessful!")
print("The index given is out of range!")
return -1
else:
return(l.lst[i-1])
def locatebyvalue(l, x):
position = 1
for item in l.lst:
if x == item:
return position
else:
position = position+1
return -1
def locatebyid(l, idd):
position = 1
for item in l.lst:
if item.id == idd:
return position
else:
position = position+1
return -1
def insert(l, i, x):
if (i<1) or (i>length(l)+1):
print("The insert() is unsuccessful!")
print("The index given is out of range!")
else:
l.lst.insert(i-1, x)
def delete(l, i):
if isempty(l):
print("The delete() is unsuccessful!")
print("The list is empty!")
return
elif (i<1) or (i>length(l)):
print("The delete() is unsuccessful!")
print("The index given is out of range!")
return
else:
del l.lst[i-1]
def display(l):
print(l.lst)