Updater: Cleaning

Updater.py

@@ -1,6 +1,8 @@
 #!/usr/bin/env python
 from tkinter import *
 from tkinter import filedialog
+from tkinter.messagebox import *
+
 import subprocess
 
 file = None
@@ -9,18 +11,19 @@ def Install():
 	ip = e.get()
 	print ("Installing ",file)
 	print ("At ip ", ip)
-	
+
 	if file != None:
 		subprocess.call(["python", "espota.py", "-i", ip, "-f", file])
+	else:
+		showerror("Error", "Select a firmware first")
 
 
 def askopenfile():
 	global file
-	filename = filedialog.askopenfile(mode='r', filetypes=[('binaries', '*.bin')])
-	file = filename.name
-		
-root = Tk()  
-Ip = Text(root)
+	file = filedialog.askopenfilename(title='Select Firmware', filetypes=[('binaries', '*.bin')])
+
+root = Tk()
+root.title("Firmware Updater")
 
 button_opt = {'fill': constants.BOTH, 'padx': 5, 'pady': 5}
 Button(root, text='Select firmware', command=askopenfile).pack(**button_opt)
@@ -30,8 +33,6 @@ e.pack()
 e.delete(0, END)
 e.insert(0, "192.168.0.XX")
 
-buttonInstall = Button(root, text = 'Install', command = Install)
-buttonInstall.pack(pady=20, padx = 20)
+Button(root, text = 'Install', command = Install).pack(pady=20)
 
-
-root.mainloop()
+root.mainloop()