python 与时间有关的操作

python保存时间戳文件

import time

# ISOTIMEFORMAT='%Y-%m-%d %X'

ISOTIMEFORMAT='%Y-%m-%d'

t= time.strftime( ISOTIMEFORMAT, time.gmtime( time.time() ) )

f = open( t + "test.txt",'wb')

f.write("hello,\n This is a test file")

f.close()

计算程序运行时间

import time

# ISOTIMEFORMAT='%Y-%m-%d %X'

start = time.time()

ISOTIMEFORMAT='%Y-%m-%d'

t= time.strftime( ISOTIMEFORMAT, time.gmtime( time.time() ) )

f = open( t + "test.txt",'wb')

f.write("hello,\n This is a test file")

f.close()

print t

elapsed = time.time() - start

print elapsed

out：

​

2016-05-31

0.00300002098083