Problem statement no.3 solved

Problem Statement 3/calc.py

@@ -0,0 +1,167 @@
+import tkinter as tk
+
+LARGE_FONT_STYLE = ("Arial", 40, "bold")
+SMALL_FONT_STYLE = ("Arial", 16)
+DIGITS_FONT_STYLE = ("Arial", 24, "bold")
+DEFAULT_FONT_STYLE = ("Arial", 20)
+
+OFF_WHITE = "#F8FAFF"
+WHITE = "#FFFFFF"
+LIGHT_BLUE = "#CCEDFF"
+LIGHT_GRAY = "#F5F5F5"
+LABEL_COLOR = "#25265E"
+
+
+class Calculator:
+    def __init__(self):
+        self.window = tk.Tk()
+        self.window.geometry("375x667")
+        self.window.resizable(0, 0)
+        self.window.title("Calculator")
+
+        self.total_expression = ""
+        self.current_expression = ""
+        self.display_frame = self.create_display_frame()
+
+        self.total_label, self.label = self.create_display_labels()
+
+        self.digits = {
+            7: (1, 1), 8: (1, 2), 9: (1, 3),
+            4: (2, 1), 5: (2, 2), 6: (2, 3),
+            1: (3, 1), 2: (3, 2), 3: (3, 3),
+            0: (4, 2), '.': (4, 1)
+        }
+        self.operations = {"/": "\u00F7", "*": "\u00D7", "-": "-", "+": "+"}
+        self.buttons_frame = self.create_buttons_frame()
+
+        self.buttons_frame.rowconfigure(0, weight=1)
+        for x in range(1, 5):
+            self.buttons_frame.rowconfigure(x, weight=1)
+            self.buttons_frame.columnconfigure(x, weight=1)
+        self.create_digit_buttons()
+        self.create_operator_buttons()
+        self.create_special_buttons()
+        self.bind_keys()
+
+    def bind_keys(self):
+        self.window.bind("<Return>", lambda event: self.evaluate())
+        for key in self.digits:
+            self.window.bind(str(key), lambda event, digit=key: self.add_to_expression(digit))
+
+        for key in self.operations:
+            self.window.bind(key, lambda event, operator=key: self.append_operator(operator))
+
+    def create_special_buttons(self):
+        self.create_clear_button()
+        self.create_equals_button()
+        self.create_square_button()
+        self.create_sqrt_button()
+
+    def create_display_labels(self):
+        total_label = tk.Label(self.display_frame, text=self.total_expression, anchor=tk.E, bg=LIGHT_GRAY,
+                               fg=LABEL_COLOR, padx=24, font=SMALL_FONT_STYLE)
+        total_label.pack(expand=True, fill='both')
+
+        label = tk.Label(self.display_frame, text=self.current_expression, anchor=tk.E, bg=LIGHT_GRAY,
+                         fg=LABEL_COLOR, padx=24, font=LARGE_FONT_STYLE)
+        label.pack(expand=True, fill='both')
+
+        return total_label, label
+
+    def create_display_frame(self):
+        frame = tk.Frame(self.window, height=221, bg=LIGHT_GRAY)
+        frame.pack(expand=True, fill="both")
+        return frame
+
+    def add_to_expression(self, value):
+        self.current_expression += str(value)
+        self.update_label()
+
+    def create_digit_buttons(self):
+        for digit, grid_value in self.digits.items():
+            button = tk.Button(self.buttons_frame, text=str(digit), bg=WHITE, fg=LABEL_COLOR, font=DIGITS_FONT_STYLE,
+                               borderwidth=0, command=lambda x=digit: self.add_to_expression(x))
+            button.grid(row=grid_value[0], column=grid_value[1], sticky=tk.NSEW)
+
+    def append_operator(self, operator):
+        self.current_expression += operator
+        self.total_expression += self.current_expression
+        self.current_expression = ""
+        self.update_total_label()
+        self.update_label()
+
+    def create_operator_buttons(self):
+        i = 0
+        for operator, symbol in self.operations.items():
+            button = tk.Button(self.buttons_frame, text=symbol, bg=OFF_WHITE, fg=LABEL_COLOR, font=DEFAULT_FONT_STYLE,
+                               borderwidth=0, command=lambda x=operator: self.append_operator(x))
+            button.grid(row=i, column=4, sticky=tk.NSEW)
+            i += 1
+
+    def clear(self):
+        self.current_expression = ""
+        self.total_expression = ""
+        self.update_label()
+        self.update_total_label()
+
+    def create_clear_button(self):
+        button = tk.Button(self.buttons_frame, text="C", bg=OFF_WHITE, fg=LABEL_COLOR, font=DEFAULT_FONT_STYLE,
+                           borderwidth=0, command=self.clear)
+        button.grid(row=0, column=1, sticky=tk.NSEW)
+
+    def square(self):
+        self.current_expression = str(eval(f"{self.current_expression}**2"))
+        self.update_label()
+
+    def create_square_button(self):
+        button = tk.Button(self.buttons_frame, text="x\u00b2", bg=OFF_WHITE, fg=LABEL_COLOR, font=DEFAULT_FONT_STYLE,
+                           borderwidth=0, command=self.square)
+        button.grid(row=0, column=2, sticky=tk.NSEW)
+
+    def sqrt(self):
+        self.current_expression = str(eval(f"{self.current_expression}**0.5"))
+        self.update_label()
+
+    def create_sqrt_button(self):
+        button = tk.Button(self.buttons_frame, text="\u221ax", bg=OFF_WHITE, fg=LABEL_COLOR, font=DEFAULT_FONT_STYLE,
+                           borderwidth=0, command=self.sqrt)
+        button.grid(row=0, column=3, sticky=tk.NSEW)
+
+    def evaluate(self):
+        self.total_expression += self.current_expression
+        self.update_total_label()
+        try:
+            self.current_expression = str(eval(self.total_expression))
+
+            self.total_expression = ""
+        except Exception as e:
+            self.current_expression = "Error"
+        finally:
+            self.update_label()
+
+    def create_equals_button(self):
+        button = tk.Button(self.buttons_frame, text="=", bg=LIGHT_BLUE, fg=LABEL_COLOR, font=DEFAULT_FONT_STYLE,
+                           borderwidth=0, command=self.evaluate)
+        button.grid(row=4, column=3, columnspan=2, sticky=tk.NSEW)
+
+    def create_buttons_frame(self):
+        frame = tk.Frame(self.window)
+        frame.pack(expand=True, fill="both")
+        return frame
+
+    def update_total_label(self):
+        expression = self.total_expression
+        for operator, symbol in self.operations.items():
+            expression = expression.replace(operator, f' {symbol} ')
+        self.total_label.config(text=expression)
+
+    def update_label(self):
+        self.label.config(text=self.current_expression[:11])
+
+    def run(self):
+        self.window.mainloop()
+
+
+if __name__ == "__main__":
+    calc = Calculator()
+    calc.run()