initial.py

# (****** Student Grading and Ranking system *******)
# (step 1 **** )
total_marks=30
print("Student grading scheme *** --- *** ")
while True:
                    # (use of while loop will run it again and again untill we does
                    # not enter greater than 30 or enter no when ask for your opinion )
    student=str(input("Enter student name : "))
    marks=float(input("Enter student marks : e.g(0 to 30) "))
    # (step 2 **** )
    # (here heavy use of conditional statements )
    if marks <0: 
        print("-" * 30)
        print("Student Name : ", student)
        print("Total marks are ",total_marks )
        print("student get negetive marks -->",marks, "and has grade : F \n Rank= Fail")
        print("-" * 30)
    elif 0 <= marks <= 5: 
        print("-" * 30)
        print("Student Name : ", student)
        print("Total marks are ",total_marks )
        print("student get -->",marks, "and has grade : C \n Rank= Poor")
        print("-" * 30)
    elif marks <=15:
        print("-" * 30)
        print("Student Name : ", student)
        print("Total marks are ",total_marks )
        print("student get -->",marks, "and has grade : B \n Rank= Good")
        print("-" * 30)
    elif marks <=25:
        print("-" * 30)
        print("Student Name : ", student)
        print("Total marks are ",total_marks )
        print("student get -->",marks, "and has grade : A \n Rank= Excellent")
        print("-" * 30)
    elif marks<=30:
        print("-" * 30)
        print("Student Name : ", student)
        print("Total marks are ",total_marks )
        print("student get -->",marks, "and has grade : A+ \n Rank= Outstanding")     
        print("-" * 30)
    else:
        print("-" * 30)
        print("You cannot enter more than 30 marks ---***--- ")
        print("-" * 30)
        break 
    # (here this will break the system totally )

    # (step 3 **** )
    checker=str(input("Do you want to continue : (yes/no)")).lower()
    if checker=="yes":
        # (here it want to know you opinion for moving forward )
        print("You can move forward : ")
        print("Student grading scheme *** --- *** ")
    else:
        print("Stop you can not move forward : ")
        break
            
            # (----****---- The End ----****---- )