python time 模块

time模块

1、获取Linux时间戳

import time
print (time.time()) # linux时间戳 1970-01-01 到当前的时间秒数。

2、程序休眠

import time
time.sleep(1) # 程序休眠一秒

3、获取UTC时间

import time
test_time = time.gmtime()
print (test_time)
print (test_time.tm_year)
print (test_time.tm_mon)
print (test_time.tm_mday)
print (test_time.tm_hour)

# time.struct_time(tm_year=2018, tm_mon=3, tm_mday=24, tm_hour=6, tm_min=7, tm_sec=32, tm_wday=5, tm_yday=83, tm_isdst=0)
# 2018
# 3
# 24
# 6

4、获取本地时间

import time
test_time = time.localtime()
print (test_time)
print (test_time.tm_year)
print (test_time.tm_mon)
print (test_time.tm_mday)
print (test_time.tm_hour)

# time.struct_time(tm_year=2018, tm_mon=3, tm_mday=24, tm_hour=6, tm_min=7, tm_sec=32, tm_wday=5, tm_yday=83, tm_isdst=0)
# 2018
# 3
# 24
# 14

5、获取格式化后的字符串时间

import time
t1 = time.localtime()
local_time = time.strftime('%Y-%m-%d %H:%M:%S',t1)
print (local_time) #本地时间
t2 = time.gmtime()
gm_time = time.strftime('%Y-%m-%d %H:%M:%S',t2)
print (gm_time) #UTC时间
# 2018-03-24 14:20:15
# 2018-03-24 06:20:15
# help
# Commonly used format codes:
#
# %Y  Year with century as a decimal number.
# %m  Month as a decimal number [01,12].
# %d  Day of the month as a decimal number [01,31].
# %H  Hour (24-hour clock) as a decimal number [00,23].
# %M  Minute as a decimal number [00,59].
# %S  Second as a decimal number [00,61].
# %z  Time zone offset from UTC.
# %a  Locale's abbreviated weekday name.
# %A  Locale's full weekday name.
# %b  Locale's abbreviated month name.
# %B  Locale's full month name.
# %c  Locale's appropriate date and time representation.
# %I  Hour (12-hour clock) as a decimal number [01,12].
# %p  Locale's equivalent of either AM or PM.

6、获取字符串中的时间值

import time
local_time = time.strptime('2017-02-09 01:03:04','%Y-%m-%d %H:%M:%S')
print (dir(local_time)) #获取字符串时间的值
print (local_time.tm_year)
print (local_time.tm_mon)
print (local_time.tm_mday)

7、获取当前时间的固定格式

import time
print (time.ctime())
# Sat Mar 24 14:31:38 2018
# 这个时间的格式是不能修改的。

8、把结构化时间转换成linux时间戳

import time
str_time = time.localtime() #获取当前的结构化时间，是tuple的格式。
print (time.mktime(str_time)) #把结构时间转化成linux时间戳

如果想要获取昨天的时间，或者明天的时间，可以使用datetime模块。