dheepakg · May 20, 2018 20:52 · May 20, 2018
diff --git a/build-3_02.py b/build-3_02.py
@@ -0,0 +1,83 @@
+from tkinter import *
+
+
+class Calculator:
+
+    def __init__(self, master):
+        print("test")
+        master.title("Random Generator")
+        master.geometry("420x210")
+        #Top Frame
+        self.random_ch = ''
+        self.entered_number = 0
+        first_frame = Frame(root, bg='gainsboro', width=450, height=50, pady=3)
+        first_frame.grid(row=0, sticky="ew")
+
+        self.gen_btn = Button(first_frame, text="Generate", width="8", anchor="w",
+                              command=lambda: self.update("add"))
+        self.gen_btn.grid(row=2, column=1)
+
+        self.input_reset_btn = Button(first_frame, text="Reset", width="6", anchor="w",
+                                      command=lambda: self.update("reset"))
+        self.input_reset_btn.grid(row=2, column=2)
+
+        vcmd = (master.register(self.on_validate))
+        self.input_box = Entry(first_frame, validate="key", width=3, validatecommand=(vcmd, "%P"))
+        self.input_box.grid(row=1, column=1)
+
+        self.input_length = Label(first_frame, text="Enter a number", bg='gainsboro')
+        self.input_length.grid(row=1, column=0)
+
+        #Second Frame
+        second_frame = Frame(root, width=450, height=50, pady=3)
+        second_frame.grid(row=1, sticky="ew")
+
+        self.text_display = Text(second_frame, height=1, width=30)
+        self.text_display.grid(row=3, column=0)
+
+        #Third Frame
+        third_frame = Frame(root, width=450, bg='gainsboro', height=50, pady=3)
+        third_frame.grid(row=2, sticky="ew")
+
+        self.quit_btn = Button(third_frame, text="Quit", width="8", command=lambda root=root:quit(root))
+        self.quit_btn.grid(row=1, column=2)
+
+        self.copy_btn = Button(third_frame, text="Copy", width="8", command=lambda root=root:self.copy_to_clipboard())
+        self.copy_btn.grid(row=1, column=3)
+
+    def on_validate(self, new_text):
+        if not new_text:
+            self.entered_number = 0
+
+        try:
+            self.entered_number = int(new_text)
+            return True
+        except ValueError:
+            return False
+
+    def update(self, method):
+        import random
+        import string
+        if method == "add":
+            self.text_display.delete('1.0', END)
+            self.random_ch = ''.join([random.choice(string.ascii_letters + string.digits + string.punctuation)\
+                                for n in range(self.entered_number)])
+        elif method == "reset":
+
+            self.random_ch = ''
+            self.text_display.delete('1.0', END)
+            self.input_box.delete(0, END)
+        else:
+            self.random_ch = ''
+        self.text_display.insert(END, self.random_ch)
+
+    def copy_to_clipboard(self):
+        root.clipboard_clear()
+        text = self.random_ch
+        root.clipboard_append(text)
+
+
+if __name__ == "__main__":
+    root = Tk()
+    my_gui = Calculator(root)
+    root.mainloop()