python生成日历实例解析

本文实例展示了Python生成日历的实现方法。该实例可实现一个月的日历生成5x7的列表，列表里的没个日期为datetime类型，采用python自带的 calendar 模块实现。

程序运行结果如下：

python test.py 2014 09
2014-08-31 2014-09-01 2014-09-02 2014-09-03 2014-09-04 2014-09-05 2014-09-06
2014-09-07 2014-09-08 2014-09-09 2014-09-10 2014-09-11 2014-09-12 2014-09-13
2014-09-14 2014-09-15 2014-09-16 2014-09-17 2014-09-18 2014-09-19 2014-09-20
2014-09-21 2014-09-22 2014-09-23 2014-09-24 2014-09-25 2014-09-26 2014-09-27
2014-09-28 2014-09-29 2014-09-30 2014-10-01 2014-10-02 2014-10-03 2014-10-04

python代码如下：

#coding:utf-8
# Last modified: 2014-08-21 11:08:08
import calendar
import datetime
import sys

def getcal(y, m):
# 从周日开始
cal = calendar.Calendar(6)
if not isinstance(y, int): y = int(y)
if not isinstance(m, int): m = int(m)
if m == 1: # 1月份
 py = y - 1; pm = 12;
 ny = y; nm = 2
elif m == 12: # 12月份
 py = y; pm = 11
 ny = y + 1; nm = 1
else:
 py = y; pm = m - 1
 ny = y; nm = m + 1
pcal = cal.monthdayscalendar(py, pm) # 上一月
ncal = cal.monthdayscalendar(ny, nm) # 下一月
ccal = cal.monthdayscalendar(y, m)  # 当前
w1 = ccal.pop(0) # 取第一周
w2 = ccal.pop() # 取最后一周
wp = pcal.pop() # 上个月的最后一周
wn = ncal.pop(0) # 下个月的第一周
#r1 = [datetime.date(y, m ,w1[i]) or wp[i] for i in range(7)]
r1 = [w1[i] and datetime.date(y, m, w1[i]) or datetime.date(py, pm, wp[i]) for i in range(7)]
r2 = [w2[i] and datetime.date(y, m, w2[i]) or datetime.date(ny, nm, wn[i]) for i in range(7)]
# 转datetime
result = []
result.append(r1) # 第一周
for c in ccal:  # 其他周
 result.append([datetime.date(y,m,i) for i in c])
result.append(r2) # 最后一周
return result

if __name__ == '__main__':
for w in getcal(sys.argv[1], sys.argv[2]):
 for d in w:
  print d,
 print

希望本文所述实例对大家的Python程序设计有所帮助。