#未優化的代碼
  1 #輸出日歷
  2 def print_calendar(year,month,date = 1):
  3     month_dict = {‘1‘:‘January‘,‘2‘:‘February‘,‘3‘:‘March‘,‘4‘:‘April‘,‘5‘:‘May‘,‘6‘:‘June‘,‘7‘:‘July‘,
  4                   ‘8‘:‘August‘,‘9‘:‘September‘,‘10‘:‘October‘,‘11‘:‘November‘,‘12‘:‘December‘}
  5     
  6     #數字月份轉換為字符串,並判斷月份和號數是否合法
 

  7     if month in range(1,13) and date in range(1,31):
  8         month_str = str(month)
  9         if month_str in month_dict:
 10             month_str = month_dict[month_str]
 11     else:
 12         print(‘月份或號數輸入不合法‘)
 13         return -1
 14     
 15     #頭部
 16     print(‘%15s%8d‘%(month_str,year))
 
 17     print(‘-‘*33)
 18     print(‘Sun  Mon  Tue  Wed  Thu  Fri  Sat‘)
 19     
 20     #得到每月1號是星期幾
 21     first_day = get_start_day(year,month,1)
 22     #得到此月有多少天
 23     month_num = days_of_month(year,month)
 24 
 25     each_day = 0
 26     #主體
 27     for index in range(1,43):
 28     
 29         if
 
 index < first_day + 1:
 30             print(‘ ‘*5,end = ‘‘)
 31         else:
 32             if (index - 1) % 7 == 0:
 33                 print(‘‘)
 34             each_day += 1
 35             if each_day > month_num:
 36                 return False
 37             if each_day < 10:
 38                 if each_day == date:
 39                     print(‘%-5s‘%(‘--‘),end = ‘‘)
 40                 else:
 41                     print(‘ %-4d‘%(each_day),end = ‘‘)
 42             else:
 43                 if each_day == date:
 44                     print(‘%-5s‘%(‘--‘),end = ‘‘)
 45                 else:
 46                     print(‘%-5d‘%(each_day),end = ‘‘)
 47                 
 48               
 49 #輸入一個年月日，判斷是星期幾
 50 #需要一個比較標準：2010-1-1是星期五
 51 #計算當前距離標準過了多少天(total_days % 7  + 5 -1)%7
 52 #先遍歷年份，是閏年+366，不是+365
 53 #再遍歷月份，31,30,29,28
 54 def get_start_day(year,month,date):
 55     total_days = 0
 56     #遍歷年份
 57     for one_year in range(2010,year):
 58         if is_leap_year(one_year):
 59             total_days += 366
 60         else:
 61             total_days += 365
 62     #print(total_days)
 63     #遍歷月份
 64     for one_month in range(1,month):
 65         total_days += days_of_month(year,one_month)
 66     #print(total_days)
 67     #加上當月號數,則求得總共過了多少天
 68     total_days += date
 69 
 70     #求輸入的年月日是星期幾
 71     day = (total_days % 7 + 5 - 1) % 7
 72     
 73     #print(total_days)
 74     #print(day)
 75     return day
 76 
 77 #輸入一個年份和月份，輸出這月有多少天
 78 #1,3,5,7,8,10,12--------31天
 79 #4,6,9,11 --------------30天
 80 #如果是閏年2------------29天
 81 #不是閏年 2-------------28天
 82 def days_of_month(year,month):
 83     days = 0
 84     if month in (1,3,5,7,8,10,12):
 85         days = 31
 86     elif month in (4,6,9,11):
 87         days = 30
 88     elif is_leap_year(year):
 89         days = 29
 90     else:
 91         days = 28
 92     return days
 93 
 94 def is_leap_year(year):
 95     if year % 4 == 0 and year % 100 != 0 or year % 400 == 0:
 96         return True
 97     return False
 98 
 99 def main():
100     print(‘*‘*33)
101     year = int(input(‘請輸入年份：‘))
102     month = int(input(‘請輸入月份：‘))
103     date = int(input(‘請輸入號數：‘))
104     print(‘*‘*33)
105     #某年某月有多少天
106     #days = days_of_month(year,month)
107     #print(‘{}年{}月有{}天‘.format(year,month,days))
108     #某年某月某日是星期幾
109     #day = get_start_day(year,month,date)
110     #print(‘{}年{}月{}日是星期{}‘.format(year,month,date,day))
111     #打印日歷
112     print_calendar(year,month,date)
113     
114 #執行
115 main()

python打印日歷