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Author: comdar16

Python calculator/calculator.py

@@ -0,0 +1,58 @@
+from tkinter import*
+
+def fCalc(src, side):
+    appObj = Frame(src, borderwidth=4, bd=2,bg = "#000000")
+    appObj.pack(side=side, expand=YES, fill=BOTH)
+    return appObj
+
+def button(src, side, text, command=None):
+    appObj = Button(src, text=text, command=command)
+    appObj.pack(side=side, expand=YES, fill=BOTH)
+    return appObj
+
+class app(Frame):
+    def __init__(self, root = Tk(), width=364, height=425):
+        Frame.__init__(self)
+        self.option_add("*Font", 'arial 20 bold')
+        self.pack(expand=YES, fill=BOTH)
+        self.master.title("Python calculator")
+        screen_width = root.winfo_screenwidth()
+        screen_height = root.winfo_screenheight()
+        x = (screen_width/2) - (width/2)
+        y = (screen_height/2) - (height/2)
+        root.geometry('%dx%d+%d+%d' % (width, height, x, y))
+        display = StringVar()
+        Entry(self, relief= RIDGE,      
+                    textvariable=display, state=DISABLED, justify='right', bd=20, bg = "#000000").pack(side=TOP, expand=YES,
+                            fill=BOTH)
+        clrChar = "Clear"
+        button(self, TOP, clrChar, lambda appObj=display, i=clrChar: appObj.set(''))
+
+
+        for btnNum in ("789/", "456*", "123-", "0.+"):
+
+            FunctionNum = fCalc(self, TOP)
+            for fEquals in btnNum:
+                button(FunctionNum, LEFT, fEquals,
+                        lambda appObj=display, i=fEquals: appObj.set(appObj.get() + i))
+                EqualsButton = fCalc(self, TOP)
+                
+        for fEquals in "=":
+            if fEquals == "=":
+                btnEquals = button(EqualsButton, LEFT, fEquals)
+                btnEquals.bind('<ButtonRelease-1>',
+                                lambda e, s=self, appObj=display: s.result(appObj), "+")
+            else:
+                btnEquals = button(EqualsButton, LEFT, fEquals,
+                        lambda appObj=display, s=" %s "%fEquals: appObj.set(appObj.get()+s))
+
+    def result(self, display):
+        try:
+            display.set(eval(display.get()))
+        except:
+            display.set("Error")
+
+if __name__ == '__main__':
+    app().mainloop()
+
+