Python 学习笔记：时间处理

'''
01：通过print()函数在控制台打印字符串
02：通过type()函数获取数据的类型
03：通过str()把某一数据转化成字符串
04：通过<class 'datetime.datetime'>获取获取当前时间相关的数据
05：通过三个单引号或者三个双引号添加多行注释，或者通过#号添加单行注释。
'''

# 控制台打印。
print ("Hello World!") # Hello World!

# 获取当前时间
from datetime import datetime
# datetime.today()方法，暂时可以理解为datetime库中datetime模块的today()方法
timeToday = datetime.today() 
print("type(timeToday): " + str(type(timeToday)))# type(timeToday): <class 'datetime.datetime'>
print(timeToday)  # 2018-07-22 13:24:36.557507

rightThisDay = timeToday.day
print("type(rightThisDay): " + str(type(rightThisDay)))  # type(rightThisDay): <class 'int'>

rightThisHour = timeToday.hour
rightThisMinute = timeToday.minute
rightThisSec = timeToday.second

# 5 表示周六 datetime.now()方法
timeNow = datetime.now() 
print("type(timeNow): " + str(type(timeNow))) # type(timeNow): <class 'datetime.datetime'>

rightThisWeek = timeNow.weekday()
print("type(rightThisWeek): " + str(type(rightThisWeek))) # type(rightThisWeek): <class 'int'>

print("星期： " + str(rightThisWeek) +
      " Day: " + str(rightThisDay) +
      " Hour: " + str(rightThisHour) +
      " Min: " + str(rightThisMinute) +
      " Sec: " + str(rightThisSec)) # 星期： 6 Day: 22 Hour: 13 Min: 24 Sec: 36