大佬们,我编写的万年历,如何加入平年闰年的判断

[cc jesse]

from tkinter import*
import calendar
import calendar
def close():
win.destroy
def win_calendar():
new_win = Tk()#c创建窗口
new_win.title("万年历")#标题
new_win.geometry("666x666")#页面大小
fetch_year =int (year_ent.get())
cal_content =calendar.calendar(fetch_year)
cal_year = Label(new_win,text=cal_content,font="Consolas 10 bold")
cal_year.grid(row=5,column=1,padx=20)#排版
new_win.mainloop()
win = Tk()
win.title("万年历")
#标签页面的修改
head =Label(win,text="CALENDAR",bg="dark gray",font=("times",28,"bold"))
year =Label(win,text="Year",font=("Arial",14,"bold"))
year_ent = Entry(win,width=10,font=("Arial",14))#输入时间输入框
#输入推出按钮
show = Button(win, text="Show",font=("Arial",12,"bold"),bg="light green",command=win_calendar)
quit = Button(win, text="Quit",font=("Arial",12,"bold"),bg="orange",command=close)
head.grid(row=1, columnspan=3, padx=20)
#美观增加行间距
win.grid_rowconfigure(2, minsize=10)
year.grid(row=3, column=1)
year_ent.grid(row=3, column=2,padx=25)
win.grid_rowconfigure(4, minsize=10)
show.grid(row=5, column=1, padx=20)
quit.grid(row=5, column=2, padx=20)
#进入循环
mainloop()

[青柍]

输入年份，先看能否整除100，如果能，然后看能否整除400，如果也能就是闰年，例如2000，如果不能整除400就是平年，例如1900，如果不能整除100，就看能不能整除4，如果能整除4就是闰年，比如2008，如果不能就是平年，例如1999
a = input(‘输入年份’)
if int(a) % 100 ==0:
if int(a) % 400==0:

print(f'{a}年是闰年')
else:
print(f'{a}年是平年')
else：
if int(a) % 4==0:

print(f'{a}年是闰年')
else:
print(f'{a}年是平年')