init

input_fibonacci.py

@@ -0,0 +1,64 @@
+from tkinter import *
+import os, sys, ctypes
+
+class App:
+    def __init__(self, master):
+        frame1 = Frame(master)
+        frame1.master.title("Fibonacci")
+        frame1.pack()
+        frame2 = Frame(master)
+        frame2.pack()
+
+        # Declare textVar for textbox
+        self.textVar = StringVar()
+        self.textVar.set("2")
+
+        # Setting up textbox, plus/minus buttons and a update button
+        self.entry = Entry(frame2)
+        self.entry.insert(0,"1")
+        self.label = Label(frame1, textvariable=self.textVar)
+        self.flabel = Label(frame2, text="nth=")
+        self.ubutton = Button(frame2, text = "Update", command=self.fibonacci)
+        self.pbutton = Button(frame2, text="+", command=self.plus)
+        self.mbutton = Button(frame2, text="-", command=self.minus)
+
+        # Pack everything
+        self.label.pack(side=LEFT, padx=5)
+        self.flabel.pack(side=LEFT, pady=5)
+        self.entry.pack(side=LEFT, pady=5, padx=(0,5))
+        self.ubutton.pack(side=LEFT, pady=5, padx=(5,0))
+        self.pbutton.pack(side=LEFT, pady=5)
+        self.mbutton.pack(side=LEFT, pady=5, padx=(0,5))
+
+    # Adds one to the textbox's integer then updates the Label
+    def plus(self):
+        string = self.entry.get()
+        self.entry.delete(0, END)
+        self.entry.insert(0, str(int(string) + 1))
+        self.fibonacci()
+
+    # Takes away one from the textbox's integer then updates the Label
+    def minus(self):
+        string = self.entry.get()
+        self.entry.delete(0, END)
+        self.entry.insert(0, str(int(string) - 1))
+        self.fibonacci()
+
+    # Sets the text of the Label to nth integer of the Fibonacci sequence
+    # Supports negatives
+    def fibonacci(self):
+        n = self.entry.get()
+        negative = int(n) < 0
+        x = 1;y = 1;z = 0
+        for _ in range(abs(int(n))):
+            z = x
+            x = x + y
+            y = z
+        if negative: x *= -1
+        self.textVar.set(str(x))
+
+root = Tk()
+root.iconbitmap(os.path.join(sys.path[0], 'img', 'ico.ico'))
+root.resizable(False, False)
+app = App(root)
+root.mainloop()