Why is my function not working in Python? I defined the list, but it says I haven't-CodePudding

def get_student_list():
    iStr = ""
    stdlist = []
    x = 1
    while not iStr == "quit":
        iStr = input(f'Please enter a new student name, ("quit" if no more student)')
        if not iStr == "quit":
            stdlist.append(iStr)
        elif iStr == "":
            print("Empty student name is not allowed.")
        x  = 1
print(f'The whole class list is {sum(stdList)}')

What's wrong and how do I fix it?

I'm expecting the user input student into list and end when they type quit. Or when it's empty, print empty student name is not allowed

CodePudding user response：

your list is defined in the function and your print is global so it won't work ^^ you can either define stdlist as a global (outside your function) or indent your print

CodePudding user response：

I fixed some things in your code and made it more readable

def get_student_list():
    stdlist = []

    while True:
        iStr = input('Please enter a new student name, ("quit" if no more student)')
        if iStr == "quit":
            return stdlist 
        elif iStr == "":
            print("Empty student name is not allowed.")
        else: 
            stdlist.append(iStr)

stdList = get_student_list()
print(f"You have a total of {len(stdList)} students:")
for i, name in enumerate(stdList):
    print(f"  {i 1})  {name}")

This will return:

You have a total of 3 students:
  1) Bob Marley
  2) Michael Jackson
  3) Elvis Presley

CodePudding user response：

The list stdlist is local to the function get_student_list(). Your last print does not have access to it.

To fix:

def get_student_list():
    # All your code here
    return stdlist

stdlist = get_student_list()
print(f'The whole class list is {sum(stdlist)}')