时间相关

time.struct_time(tm_year=2018, tm_mon=4, tm_mday=13, tm_hour=19, tm_min=53, tm_sec=10, tm_wday=4, tm_yday=103, tm_isdst=0)#时间数组
datetime.datetime(2018, 4, 13, 19, 54, 7, 446953)#python的datetime。可用于绘图

datetime.datetime.fromtimestamp(timestamp)#时间戳转换成python 的datetime

将python的datetime转换为时间戳

dtime = datetime.datetime.now()
un_time = time.mktime(dtime.timetuple())

字符串时间解析成时间戳

tm = time.strptime(tss1, '%Y-%m-%d %H:%M:%S')
time.mktime(tm)

t = timeit.Timer("cal.great_circle(%f,%f,%f,%f)" % (lon1, lat1, lon2, lat2),
"import cal")#调用cal.py里的方法great_circle(lon1,lat1,lon2,lat2)