Create CalculatorApp.py

The Calculators are been invented as an item which saves the most of our time of calculating complex numericals and after the simplification of angled calculations as sin, cos etc it became even more easy for the human kind to segrigate and organise the calculations more oftenly in simpler way 
My Calculator is designed to code the calculations of complex mathematical numericals which include angles also, Please do consider my Contribution.
Thank You

Beginner_Projects/Calculator_App/CalculatorApp.py

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+import tkinter as tk
+from tkinter import ttk
+import math
+
+class CalculatorApp:
+    def __init__(self, root):
+        self.root = root
+        self.root.title("Modern Calculator")
+        self.root.geometry("400x500")
+        self.root.configure(bg='#f0f0f0')
+        self.create_widgets()
+
+    def create_widgets(self):
+        # Display
+        self.display = ttk.Entry(self.root, font=('Arial', 18), justify='right')
+        self.display.grid(row=0, column=0, columnspan=4, ipadx=8, ipady=20, padx=10, pady=10, sticky="nsew")
+
+        # Number and operation buttons
+        buttons = [
+            ('7', 1, 0), ('8', 1, 1), ('9', 1, 2), ('/', 1, 3),
+            ('4', 2, 0), ('5', 2, 1), ('6', 2, 2), ('*', 2, 3),
+            ('1', 3, 0), ('2', 3, 1), ('3', 3, 2), ('-', 3, 3),
+            ('0', 4, 0), ('.', 4, 1), ('+', 4, 2), ('=', 4, 3),
+            ('C', 5, 0), ('sqrt', 5, 1), ('log', 5, 2), ('exp', 5, 3),
+            ('sin', 6, 0), ('cos', 6, 1), ('tan', 6, 2)
+        ]
+
+        # Create buttons dynamically
+        for (text, row, col) in buttons:
+            ttk.Button(self.root, text=text, command=lambda t=text: self.on_button_click(t)).grid(row=row, column=col, ipadx=10, ipady=10, padx=5, pady=5, sticky="nsew")
+
+        # Configure the rows and columns for responsive design
+        for i in range(7):
+            self.root.grid_rowconfigure(i, weight=1)
+        for i in range(4):
+            self.root.grid_columnconfigure(i, weight=1)
+
+    def on_button_click(self, char):
+        if char == 'C':
+            self.display.delete(0, tk.END)
+        elif char == '=':
+            try:
+                expression = self.display.get()
+                result = eval(expression)
+                self.display.delete(0, tk.END)
+                self.display.insert(tk.END, str(result))
+            except Exception as e:
+                self.display.delete(0, tk.END)
+                self.display.insert(tk.END, 'Error')
+        elif char == 'sqrt':
+            try:
+                value = float(self.display.get())
+                result = math.sqrt(value)
+                self.display.delete(0, tk.END)
+                self.display.insert(tk.END, str(result))
+            except:
+                self.display.delete(0, tk.END)
+                self.display.insert(tk.END, 'Error')
+        elif char == 'log':
+            try:
+                value = float(self.display.get())
+                result = math.log(value)
+                self.display.delete(0, tk.END)
+                self.display.insert(tk.END, str(result))
+            except:
+                self.display.delete(0, tk.END)
+                self.display.insert(tk.END, 'Error')
+        elif char == 'exp':
+            try:
+                value = float(self.display.get())
+                result = math.exp(value)
+                self.display.delete(0, tk.END)
+                self.display.insert(tk.END, str(result))
+            except:
+                self.display.delete(0, tk.END)
+                self.display.insert(tk.END, 'Error')
+        elif char in ['sin', 'cos', 'tan']:
+            try:
+                value = float(self.display.get())
+                if char == 'sin':
+                    result = math.sin(math.radians(value))
+                elif char == 'cos':
+                    result = math.cos(math.radians(value))
+                elif char == 'tan':
+                    result = math.tan(math.radians(value))
+                self.display.delete(0, tk.END)
+                self.display.insert(tk.END, str(result))
+            except:
+                self.display.delete(0, tk.END)
+                self.display.insert(tk.END, 'Error')
+        else:
+            self.display.insert(tk.END, char)
+
+
+# Run the application
+if __name__ == "__main__":
+    root = tk.Tk()
+    app = CalculatorApp(root)
+    root.mainloop()