calendar display function

calendar_display/calendar_app.py

@@ -12,13 +12,24 @@ def main():
  year_entry.pack(pady=5)
 
  def show_calendar():
- # Placeholder function for showing calendar
- print("Show calendar function placeholder")
+ year = year_entry.get()
+ if not year.isdigit():
+ messagebox.showerror("Invalid Input", "Please enter a valid year")
+ return
+ display_calendar(year)
 
  tk.Button(root, text="Show Calendar", command=show_calendar).pack(pady=5)
  tk.Button(root, text="Exit", command=root.destroy).pack(pady=5)
 
  root.mainloop()
 
-if __name__ == "__main__":
- main()
+def display_calendar(year):
+ try:
+ year = int(year)
+ if year < 1:
+ raise ValueError
+ cal = calendar.TextCalendar()
+ cal_str = cal.formatyear(year)
+ messagebox.showinfo(f"Calendar for {year}", cal_str)
+ except ValueError:
+ messagebox.showerror("Invalid Input", "Please enter a valid positive year")