From ba9a896514d6f4d59b4f40caf316ef8e5e60681c Mon Sep 17 00:00:00 2001
From: Sumanth <sumanthmylar@sumanths-air.notrust.clients.wireless.pfw.edu>
Date: Sun, 19 May 2024 19:55:37 -0400
Subject: [PATCH] Made changes to Options and input check

---
 menu-based_student_record.py | 155 ++++++++++++++++++++++++-----------
 1 file changed, 109 insertions(+), 46 deletions(-)

diff --git a/menu-based_student_record.py b/menu-based_student_record.py
index 2d892f77..557d4a98 100644
--- a/menu-based_student_record.py
+++ b/menu-based_student_record.py
@@ -1,68 +1,131 @@
-singlerecord=[]
-studList=[]
-choice='y'
-while choice.lower()!='n':
-    studName=input('enter your name ')
-    Rollno=input('enter your Rollno ')
-    cgpa=int(input('cgpa :'))
-    singlerecord.append(studName)
-    singlerecord.append(Rollno)
-    singlerecord.append(cgpa)
-    studList.append(singlerecord)
-    singlerecord=[]
-    choice=input('enter your choice [y/n]')
+studList = []
 
-#append
 def appendStudent():
     global studList
     singlr = []
-    studName=input('enter your name')
-    Rollno=input('enter your Rollno')
-    cgpa=int(input('cgpa :'))
+    studName = input('Enter your name: ')
+    
+    while True:
+        Rollno = input('Enter your Rollno: ')
+        if Rollno.isdigit():
+            Rollno = int(Rollno)
+            break
+        else:
+            print("Rollno should be an integer. Please try again.")
+    
+    while True:
+        try:
+            cgpa = float(input('CGPA (decimal): '))
+            break
+        except ValueError:
+            print("CGPA should be a decimal number. Please try again.")
+    
     singlr.append(studName)
     singlr.append(Rollno)
     singlr.append(cgpa)
     studList.append(singlr)
-    
-    
-# remove existing record by rollno
+
+# Remove existing record by rollno
 def removeRecord():
     global studList
-    rolln=int(input("enter student's rollno:"))
+    while True:
+        rolln = input("Enter student's Rollno: ")
+        if rolln.isdigit():
+            rolln = int(rolln)
+            break
+        else:
+            print("Rollno should be an integer. Please try again.")
+    
+    found = False
     for record in studList:
-        if rolln in record:
+        if rolln == record[1]:  # Comparing Rollno which is the second item in the list
             studList.remove(record)
+            found = True
+            break  # Exit the loop once the record is found and removed
+    
+    if not found:
+        print("Student not found.")
 
-# view student by name:
+
+# View student by name
 def viewRecord():
-    name=input("enter student's name:")
+    name = input("Enter student's name: ")
+    found = False
     for record in studList:
-        if name in record:
+        if name == record[0]:  # Comparing name which is the first item in the list
             print(record)
+            found = True
+            break
+    if not found:
+        print("Student not found.")
+
 
-# copy
+# Copy list (functionality can be implemented as needed)
 def copyList():
-    print("what to do??")
+    global studList
+    copiedList = studList.copy()
+    print("Copied list:", copiedList)
 
-#remove all
+# View all students
+def viewAllRecords():
+    if not studList:
+        print("No students in the list.")
+    else:
+        for record in studList:
+            print(record)
+
+# Remove all records
 def removeAll():
+    global studList
     studList.clear()
+    print("All records removed.")
+
+# Show menu
+def showMenu():
+    print("Enter:")
+    print("Option 1: Append student")
+    print("Option 2: Remove student by Rollno")
+    print("Option 3: View student by name")
+    print("Option 4: Copy list")
+    print("Option 5: View all Students ")
+    print("Option 6: Remove all students")
+    print("Option 7: Exit")
+
+# Main program loop
+def main():
+    flag = 'y'
+    while flag.lower() == 'y':
+        showMenu()
+        try:
+            find = int(input("Enter your choice: "))
+            if find == 1:
+                appendStudent()
+            elif find == 2:
+                removeRecord()
+            elif find == 3:
+                viewRecord()
+            elif find == 4:
+                copyList()
+            elif find == 5:
+                viewAllRecords()
+            elif find == 6:
+                removeAll()
+            elif find == 7:
+                print("Exiting the program.")
+                break
+            else:
+                print("Enter correct option !!")
+        except ValueError:
+            print("Please enter a valid number.")
+        
+        while True:
+            flag = input("Do you want to continue? (y/n): ").lower()
+            if flag in ['y', 'n']:
+                break
+            else:
+                print("Invalid input. Please enter 'y' or 'n'.")
+
+# When the code is run, the main function will be executed first to give options to the user.
+if __name__ == "__main__":
+    main()
 
-flag = 'y'
-while (flag == 'y'):
-    find = int(input("Enter \n option 1 : Append student \n option 2: remove student by Rollno\n option 3: view student by name\n option 4: copy list\n option 5: remove all students option \n 6: exit"))
-    if (find == 1):
-        appendStudent()
-    elif (find == 2):
-        removeRecord()
-    elif (find == 3):
-        viewRecord()
-    elif (find == 4):
-        copyList()
-    elif (find == 5):
-        removeAll()
-    elif (find == 6):
-        exit
-    else:
-        print("enter correct option !!")
-    flag = input("do u want to continue ? say y or n : \n")