some comment tweaks

main.py

@@ -1,33 +1,37 @@
 import tkinter as tk        # using tkinter for the GUI
 import tkinter.ttk as ttk
+# Requirements to run: python3 pytk
 
 class Window(tk.Frame): # create a tkinter frame
     def __init__(self, master=None):
         tk.Frame.__init__(self, master)
         self.master = master
 
-root = tk.Tk()      # some definitions for the GUi
+root = tk.Tk()      # some definitions for the gui
 app = Window(root)
 
 ##### Functions #####
 
 def addBase(): # the addBase function will add whatever base is in the baseInput entry box with the button is pressed
     out = []
-    for base in baseList['values']: # create a list that is a copy of the base list, but as integers instead of strings (so it can be sorted)
+    for base in baseDropdown['values']: # create a list that is a copy of the base list, but as integers instead of strings (so it can be sorted)
         out.append(int(base)) 
     try:
         if not int(baseInput.get()) in out: # if the base isn't already there,
             out.append(int(baseInput.get())) # then add it to the list
-        baseList['values'] = sorted(out) # apply the list to the dropdown, after sorting it
+        baseDropdown['values'] = sorted(out) # apply the list to the dropdown, after sorting it
         functionTrigger(0,0,0) # Trigger number conversion
-    except ValueError: # error is raised if the base is not a number
+    except ValueError: # error is caught if the base is not a number
         displayMessage("Not a valid base!")
 
 # functionTrigger is ran when the number input box is changed, or when a base is added
 def functionTrigger(a,b,c): # Positional arguments are not used for this function to run, but still must be defined to allow the finction to be called by a tracer
     input = numberInput.get()  # Retreive the input number
-    base = int(baseList['values'][baseList.current()]) # Retreive the current selected base
-    baseConverter(input, base) # run the conversion with the selected base and input
+    base = int(baseDropdown['values'][baseDropdown.current()]) # Retreive the current selected base
+    listOut.delete(0,listOut.size()) # clear the output
+    output = baseConverter(input, base) # run the conversion with the selected base and input
+    for line in output:  # insert each line into the output listbox at the end
+        listOut.insert(tk.END, line)
         
 # displayMessage will simply write a message to the output listbox.
 def displayMessage(message):
@@ -37,13 +41,12 @@ def displayMessage(message):
 
 def baseConverter(userInput, numberBase): # arguments: userInput: the user's number to be converted. numberBase: the number base of the input
     try:
-        decimalNum = int(userInput,numberBase) # First, try to get the number in decimal.
+        decimalNum = int(userInput,numberBase) # first, try to get the number in decimal.
     except: # If this fails, then the input from the user does not work in this base, or might not be a number at all
         displayMessage("Number entered does not match the base!")
         return
-    
-    listOut.delete(0,listOut.size()) # clear the output
-    for base in baseList['values']: # Iterate through all bases
+    outputList = []
+    for base in baseDropdown['values']: # iterate through all bases
         outputText = "Base " + base + ": " # prepare a string for the line
         outputNumber = ""
         tempNum = decimalNum # create a temp number to modify
@@ -57,8 +60,9 @@ def baseConverter(userInput, numberBase): # arguments: userInput: the user's num
                 outputNumber += chr(55 + digit) # ASCII character offset for capital letters
                 
         outputNumber = outputNumber[::-1] # reverse the output number, as the above loop added digits in reverse
-        outputText += outputNumber 
-        listOut.insert(tk.END, outputText) # insert the line into the output listbox at the end
+        outputText += outputNumber #add the number to the rest of the string
+        outputList.append(outputText) # add each conversion to the output list
+    return outputList # return the list of conversions
         
 ##### Variables #####
 
@@ -90,10 +94,10 @@ separator2 = ttk.Separator(root, orient='horizontal')
 separator2.place(relx=0, rely=0.43, relwidth=1, relheight=1)
 
 # the dropdown list of bases
-baseList = ttk.Combobox(root, width='10')
-baseList['values']= (2, 10, 16)
-baseList.current(1) #set the default item to base 10
-baseList.grid(column=1, row=4)
+baseDropdown = ttk.Combobox(root, width='10')
+baseDropdown['values']= (2, 10, 16)
+baseDropdown.current(1) #set the default item to base 10
+baseDropdown.grid(column=1, row=4)
 
 # label for the base dropdown
 lbl3 = tk.Label(root, text="\nNumber Base \n of the input:\n", font=("Arial", 12))