无需日历或日期时间模块即可打印日历的Python程序

给定月份和年份。任务是在不使用任何模块或预定义函数的情况下显示该月和给定年份的日历。

例子：

Input : 
mm(1-12) :9
yy :2010

Output :    
September 2010
Su Mo Tu We Th Fr Sa
         01 02 03 04 
05 06 07 08 09 10 11 
12 13 14 15 16 17 18 
19 20 21 22 23 24 25 
26 27 28 29 30 

方法：

在下面的程序中，我们首先计算奇数天数以找到日期 01-mm-yyyy 的日期。然后，我们将年（yy）和月（mm）作为输入并显示其日历一年中的一个月。

下面是给定方法的实现。

# Python code to print Calendar
# Without use of Calendar module
   
mm = 2
yy = 2020
  
month ={1:'January', 2:'February', 3:'March', 
        4:'April', 5:'May', 6:'June', 7:'July',
        8:'August', 9:'September', 10:'October',
        11:'November', 12:'December'}
   
# code below for calculation of odd days
day =(yy-1)% 400
day = (day//100)*5 + ((day % 100) - (day % 100)//4) + ((day % 100)//4)*2
day = day % 7
  
nly =[31, 28, 31, 30, 31, 30, 
      31, 31, 30, 31, 30, 31]
ly =[31, 29, 31, 30, 31, 30, 
     31, 31, 30, 31, 30, 31]
s = 0
  
if yy % 4 == 0:
    for i in range(mm-1):
        s+= ly[i]
else:
    for i in range(mm-1):
        s+= nly[i]
  
day += s % 7
day = day % 7
   
# variable used for white space filling 
# where date not present
space =''
space = space.rjust(2, ' ')
  
# code below is to print the calendar
print(month[mm], yy)
print('Su', 'Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa')
  
if mm == 9 or mm == 4 or mm == 6 or mm == 11: 
    for i in range(31 + day):
          
        if i<= day:
            print(space, end =' ')
        else:
            print("{:02d}".format(i-day), end =' ')
            if (i + 1)% 7 == 0:
                print()
elif mm == 2:
    if yy % 4 == 0:
        p = 30
    else:
        p = 29
          
    for i in range(p + day):
        if i<= day:
            print(space, end =' ')
        else:
            print("{:02d}".format(i-day), end =' ')
            if (i + 1)% 7 == 0:
                print() 
else:
    for i in range(32 + day):
          
        if i<= day:
            print(space, end =' ')
        else:
            print("{:02d}".format(i-day), end =' ')
            if (i + 1)% 7 == 0:
                print()

输出：

February 2020
Su Mo Tu We Th Fr Sa
                  01 
02 03 04 05 06 07 08 
09 10 11 12 13 14 15 
16 17 18 19 20 21 22 
23 24 25 26 27 28 29