Need help. How do I fix this code?
max_points = [25,25,50,25,100]
assignments = ["hw ch 1","hw ch 2","quiz ","hw ch 3","test"]
students = {"#Max":max_points}
def print_menu():
print "1. Add student"
print "2. Remove student"
print "3. Print grades"
print "4. Record grade"
print "5. Save Students"
print "6. Load Students"
print "7. Exit"
def save_students(filename,students):
out_file = open(filename, "w")
for x in students.keys():
out_file.write(x+","+students[x]+"\n")
out_file.close()
def load_students(filename,students):
in_file = open(filename,"r")
while 1:
in_line = in_file.readline()
if len(in_line) == 0:
break
in_line = in_line[-1]
[name,grade]= string.split(in_line,",")
grade[name] = grade
in_file.close()
def print_all_grades():
print "\t",
for i in range(len(assignments)):
print assignments[i],"\t",
print
keys = students.keys()
keys.sort()
for x in keys:
print x,"\t",
grades = students[x]
print_grades(grades)
def print_grades(grades):
for i in range(len(grades)):
print grades[i],"\t\t",
print
print_menu()
menu_choice = 0
while menu_choice != 7:
print
menu_choice = input("Menu Choice (1-6): ")
if menu_choice == 1:
name = raw_input("Student to add: ")
students[name] = [0]*len(max_points)
elif menu_choice == 2:
name = raw_input("Stuent to remove: ")
if students.has_key(name):
del students[name]
else:
print "Student: ",name," not found"
elif menu_choice == 3:
print_all_grades()
elif menu_choice == 4:
print "Record Grade"
name = raw_input("Student: ")
if students.has_key(name):
grades = students[name]
print "Type the number of the grade to record"
print "Type a 0 (zero) to exit"
for i in range(len(assignments)):
print i+1," ",assignments[i],"\t",
print
print_grades(grades)
which = 1234
while which != -1:
which = input("Change which Grade")
which = which-1
if 0 <= which < len(grades):
grade = input("Grade: ")
grades[which] = grade
elif which != -1:
print "Invalid Grade Number"
else:
print "Student not found"
elif menu_choice == 5:
filename = raw_input("Filename to save? ")
save_students(filename,students)
elif menu_choice == 6:
filename = raw_input("Filename to load")
load_students(filename,students)
elif menu_choice != 7:
print_menu()The instruction from the TUT is this:
Now modify the grades program from section 11 so that is uses file IO to keep a record of the students.
Please help. This is the last hard part.
