diff --git a/main.py b/main.py
index d4fb2b6..4da2979 100644
--- a/main.py
+++ b/main.py
@@ -1,158 +1,167 @@
+import sys
 from tkinter import *
 from tkinter.filedialog import askopenfilename, asksaveasfile
 import threading 
 import time
 '''from ctypes import *
-
 sum = CDLL('/home/manjunath/libsum.so')  #UTF-8 to UNICODE
 sum.our_function.argtypes = [c_int, c_char_p]
 sum.our_function.restype = c_char_p
 '''
 
+def exit_editor():
+    root.destroy()
+
+
 def about():
-	filewin = Toplevel(root)
-	string = "This is a small text editor built using Tkinter a python which supports GUI programming\n"
-	string += "This text editor unlike many others supports many functions like giving suggestions based on your previous data \n"
-	string += "Small, easy to use and works like the future of text editors \n"
-	button = Label(filewin,text=string)
-	button.pack()
+    filewin = Toplevel(root)
+    string = "This is a small text editor built using Tkinter a python which supports GUI programming\n"
+    string += "This text editor unlike many others supports many functions like giving suggestions based on your previous data \n"
+    string += "Small, easy to use and works like the future of text editors \n"
+    button = Label(filewin,text=string)
+    button.pack()
  
 def open_file():
-	global text,save_file_id
-	open_file_loc=askopenfilename()
-	open_file=open(open_file_loc,'r')
-	text.delete(1.0,END)
-	text.insert(END,open_file.read())
-	save_file_id=open_file_loc
+    global text,save_file_id
+    open_file_loc=askopenfilename()
+    try:
+        open_file=open(open_file_loc,'r')
+    except FileNotFoundError:
+        return
+    text.delete(1.0,END)
+    text.insert(END,open_file.read())
+    save_file_id=open_file_loc
 
 def save_as_file():
-	global text,save_file_id
-	name=asksaveasfile(mode='w',defaultextension=".txt")
-	text2save=str(text.get(0.0,END))  
-	name.write(text2save)
-	name=str(name)[(str(name).find("name='")+6):str(name).find("'",(str(name).find("name='")+6))]
-	save_file_id=name
+    global text,save_file_id
+    name=asksaveasfile(mode='w',defaultextension=".txt")
+    text2save=str(text.get(0.0,END))
+    try:
+        name.write(text2save)
+    except AttributeError:
+        return
+    name=str(name)[(str(name).find("name='")+6):str(name).find("'",(str(name).find("name='")+6))]
+    save_file_id=name
 
 def save_file():
-	global text,save_file_id
-	if save_file_id=="":
-		save_as_file()
-	else:
-		with open(save_file_id,'w') as f:
-			f.write(text.get(0.0,END))
+    global text,save_file_id
+    if save_file_id=="":
+            save_as_file()
+    else:
+            with open(save_file_id,'w') as f:
+                    f.write(text.get(0.0,END))
 
 def New_file():
-	text.delete(1.0, END)
-	save_file_id = ' '
+    text.delete(1.0, END)
+    save_file_id = ' '
 
 def find_destroy():
-	text.tag_remove(keyword,0.0,END)
-	search_box.destroy()
-	label1.destroy()
-	button1.destroy()
-	button2.destroy()
+    search_box.destroy()
+    label1.destroy()
+    button1.destroy()
+    button2.destroy()
 
 def find_button():
-	global search_box,label1,button1,button2
-	label1 = Label(text="						")
-	label1.pack(side=LEFT)
-	search_box = Text(root,height=1, width=20)
-	search_box.pack(side=LEFT)
-	button1 = Button(root,text="find",command = Find)
-	button1.pack(side=LEFT)
-	button2 = Button(root,text="X",command = find_destroy)
-	button2.pack(side=LEFT)
-	
+    global search_box,label1,button1,button2
+    label1 = Label(text="						")
+    label1.pack(side=LEFT)
+    search_box = Text(root,height=1, width=20)
+    search_box.pack(side=LEFT)
+    button1 = Button(root,text="find",command = Find)
+    button1.pack(side=LEFT)
+    button2 = Button(root,text="X",command = find_destroy)
+    button2.pack(side=LEFT)
+    
 
 def Find():
-	global keyword
-	keyword = search_box.get(0.0,END)
-	text_box = text.get(0.0,END)
-	text.tag_config(keyword,background='lightblue')
-	i = j = i_p = 0
-	row = 1
-	n = 0
-	while i < len(text_box):
-		if (text_box[i] == keyword[j]):
-			i_p = i - n
-			while (text_box[i] == keyword[j]) and (j<len(keyword)-1):
-				j += 1
-				i += 1
-			i -= 1
-			if j == len(keyword)-1:
-				i -= 1
-		if j == len(keyword)-1:
-			pos_start = str(row)+"."+str(i_p)
-			pos_end = '{}+{}c'.format(pos_start, len(keyword)-1)
-			#print(pos_start,pos_end)
-			text.tag_add(keyword, pos_start, pos_end)
-
-		if text_box[i] == '\n':
-			n  = i+1
-			row += 1
-			i_p = 0
-		j = 0
-		i += 1
+    global keyword
+    keyword = search_box.get(0.0,END)
+    text_box = text.get(0.0,END)
+    text.tag_config(keyword,background='lightblue')
+    i = j = i_p = 0
+    row = 1
+    n = 0
+    while i < len(text_box):
+            if (text_box[i] == keyword[j]):
+                    i_p = i - n
+                    while (text_box[i] == keyword[j]) and (j<len(keyword)-1):
+                            j += 1
+                            i += 1
+                    i -= 1
+                    if j == len(keyword)-1:
+                            i -= 1
+            if j == len(keyword)-1:
+                    pos_start = str(row)+"."+str(i_p)
+                    pos_end = '{}+{}c'.format(pos_start, len(keyword)-1)
+                    #print(pos_start,pos_end)
+                    text.tag_add(keyword, pos_start, pos_end)
+
+            if text_box[i] == '\n':
+                    n  = i+1
+                    row += 1
+                    i_p = 0
+            j = 0
+            i += 1
 
 def replace_button():
-	global search_box, button2, replace_box, label1, label2
-	label1 = Label(text="Find")
-	label1.pack(side=LEFT)
-	search_box = Text(root,height=1, width=20)
-	search_box.pack(side=LEFT)
-	label2 = Label(text="	Replace")
-	label2.pack(side=LEFT)
-	replace_box = Text(root,height=1, width=20)
-	replace_box.pack(side=LEFT)
-	button2 = Button(root,text="Replace",command = Replace)
-	button2.pack(side=LEFT)
+    global search_box, button2, replace_box, label1, label2
+    label1 = Label(text="Find")
+    label1.pack(side=LEFT)
+    search_box = Text(root,height=1, width=20)
+    search_box.pack(side=LEFT)
+    label2 = Label(text="	Replace")
+    label2.pack(side=LEFT)
+    replace_box = Text(root,height=1, width=20)
+    replace_box.pack(side=LEFT)
+    button2 = Button(root,text="Replace",command = Replace)
+    button2.pack(side=LEFT)
 
 def Replace():
-	keyword = search_box.get(0.0,END)
-	replace_word = replace_box.get(0.0,END)
-	text_box = text.get(0.0,END)
-	q = 0
-	while q < len(text_box):
-		i = j = i_p = n = 0
-		row = 1
-		while i < len(text_box):
-			if (text_box[i] == keyword[j]):
-				i_p = i - n
-				while (text_box[i] == keyword[j]) and (j<len(keyword)-1):
-					j += 1
-					i += 1
-				i -= 1
-				if j == len(keyword)-1:
-					i -= 1
-			if j == len(keyword)-1:
-				pos_start = str(row)+"."+str(i_p)
-				pos_end = '{}+{}c'.format(pos_start, len(keyword)-1)
-				replace_start = '{}+{}c'.format(pos_start, len(replace_word)-1)
-				replace_end = '{}+{}c'.format(pos_start, len(replace_word))
-				text.delete(pos_start,pos_end)
-				text.insert(pos_start,replace_word)
-				text.delete(replace_start,replace_end)
-				break
-				
-			if text_box[i] == '\n':
-				n  = i+1
-				row += 1
-				i_p = 0
-			j = 0
-			i += 1
-		q += 1
-		text_box = text.get(0.0,END)
-
-
-	label1.destroy()
-	label2.destroy()
-	replace_box.destroy()
-	button2.destroy()
-	search_box.destroy()
+    keyword = search_box.get(0.0,END)
+    replace_word = replace_box.get(0.0,END)
+    text_box = text.get(0.0,END)
+    q = 0
+    while q < len(text_box):
+            i = j = i_p = n = 0
+            row = 1
+            while i < len(text_box):
+                    if (text_box[i] == keyword[j]):
+                            i_p = i - n
+                            while (text_box[i] == keyword[j]) and (j<len(keyword)-1):
+                                    j += 1
+                                    i += 1
+                            i -= 1
+                            if j == len(keyword)-1:
+                                    i -= 1
+                    if j == len(keyword)-1:
+                            pos_start = str(row)+"."+str(i_p)
+                            pos_end = '{}+{}c'.format(pos_start, len(keyword)-1)
+                            replace_start = '{}+{}c'.format(pos_start, len(replace_word)-1)
+                            replace_end = '{}+{}c'.format(pos_start, len(replace_word))
+                            text.delete(pos_start,pos_end)
+                            text.insert(pos_start,replace_word)
+                            text.delete(replace_start,replace_end)
+                            break
+                            
+                    if text_box[i] == '\n':
+                            n  = i+1
+                            row += 1
+                            i_p = 0
+                    j = 0
+                    i += 1
+            q += 1
+            text_box = text.get(0.0,END)
+
+
+    label1.destroy()
+    label2.destroy()
+    replace_box.destroy()
+    button2.destroy()
+    search_box.destroy()
 
 def undo():
-	global undo_list,text
-	text = undo_list.pop()
+    global undo_list,text
+    text = undo_list.pop()
 
 def heapify(match_list, n, i):
     largest = i  # Initialize largest as root
@@ -182,78 +191,78 @@ def heapSort(match_list):
         heapify(match_list, i, 0)
 
 def drop_suggest(*args):
-	var_value = var.get()
-	global Text
-	txt = ''
-	i = len(txt) - 1
-	for i in text_list:
-		txt += i + ' '
-	txt += var.get()
-	text.delete(0.0, END)
-	text.insert(0.0,txt)
-	w.destroy()
+    var_value = var.get()
+    global Text
+    txt = ''
+    i = len(txt) - 1
+    for i in text_list:
+            txt += i + ' '
+    txt += var.get()
+    text.delete(0.0, END)
+    text.insert(0.0,txt)
+    w.destroy()
 
 def suggest():
-	global text, var, text_list, w
-	text_list = text.get(0.0,END).split(" ")
-	last_word = text_list.pop()
-	last_word = last_word[:-1]
-	fp = open("dictionary.txt","a+")
-	for i in text_list:
-		fp.write(i+' ')
-
-	match_list = []
-	fp.seek(0)
-	for i in fp.read().split(" "):
-		if '\n' in i:
-			v = i.split("\n")
-			for k in v:
-				if k is not '':
-					match_list.append(k)
-			continue
-		if last_word in i:
-			match_list.append(i)
-	match_list = list(set(match_list))
-	var = StringVar(root)
-	if len(match_list) != 0:
-		heapSort(match_list)
-		var.set(match_list[0])
-		var.trace('w',drop_suggest)
-		w = OptionMenu(root,var,*match_list)
-		w.pack()
-	fp.close()
+    global text, var, text_list, w
+    text_list = text.get(0.0,END).split(" ")
+    last_word = text_list.pop()
+    last_word = last_word[:-1]
+    fp = open("dictionary.txt","a+")
+    for i in text_list:
+            fp.write(i+' ')
+
+    match_list = []
+    fp.seek(0)
+    for i in fp.read().split(" "):
+            if '\n' in i:
+                    v = i.split("\n")
+                    for k in v:
+                            if k is not '':
+                                    match_list.append(k)
+                    continue
+            if last_word in i:
+                    match_list.append(i)
+    match_list = list(set(match_list))
+    var = StringVar(root)
+    if len(match_list) != 0:
+            heapSort(match_list)
+            var.set(match_list[0])
+            var.trace('w',drop_suggest)
+            w = OptionMenu(root,var,*match_list)
+            w.pack()
+    fp.close()
 
 def drop_style(*args):
-	txt = text.get(0.0,END)
-	text.delete(0.0,END)
-	text.configure(font = (var.get(), text_size))
-	text.insert(0.0,txt)
-	w.destroy()
+    txt = text.get(0.0,END)
+    text.delete(0.0,END)
+    text.configure(font = (var.get(), text_size))
+    text.insert(0.0,txt)
+    w.destroy()
 
 def font_style():
-	global text, var, w
-	var = StringVar(root)
-	var.set(text_style)
-	match_list = ["Times New Roman", "Helvetica", "Ariel", "Courier","Symbol"]
-	var.trace('w', drop_style)
-	w = OptionMenu(root, var, *match_list)
-	w.pack()
+    global text, var, w
+    var = StringVar(root)
+    var.set(text_style)
+    match_list = ["Times New Roman", "Helvetica", "Ariel", "Courier","Symbol"]
+    var.trace('w', drop_style)
+    w = OptionMenu(root, var, *match_list)
+    w.pack()
 
 def drop_size(*args):
-	txt = text.get(0.0,END)
-	text.delete(0.0,END)
-	text.configure(font = (text_style, var.get()))
-	text.insert(0.0,txt)
-	w.destroy()
+    txt = text.get(0.0,END)
+    text.delete(0.0,END)
+    text.configure(font = (text_style, var.get()))
+    text.insert(0.0,txt)
+    w.destroy()
 
 def font_size():
-	global var, w
-	var = StringVar(root)
-	var.set(text_size)
-	match_list = [8, 10, 11, 12, 14]
-	var.trace('w', drop_size)
-	w = OptionMenu(root, var, *match_list)
-	w.pack()
+    global var, w
+    var = StringVar(root)
+    var.set(text_size)
+    match_list = [8, 10, 11, 12, 14]
+    var.trace('w', drop_size)
+    w = OptionMenu(root, var, *match_list)
+    w.pack()
 
 root = Tk()
 root.title("jotter")
@@ -272,7 +281,7 @@ def font_size():
 filemenu.add_command(label = "Open", command = open_file)
 filemenu.add_command(label = "Save", command = save_file)
 filemenu.add_command(label = "Save as...", command = save_as_file)
-filemenu.add_command(label = "Exit", command = root.quit)    
+filemenu.add_command(label = "Exit", command = exit_editor)    
 
 Editmenu = Menu(menubar, tearoff=0)
 menubar.add_cascade(label = "Edit", menu = Editmenu)