Python 时间戳字符串转换

import time
# 时间戳转为格式化字符串
def timestamp_to_str(timestamp, format):
     time_tuple = time.localtime(timestamp) 
     return time.strftime(format, time_tuple) 
     
# 格式化字符串转化为时间戳
def str_to_timestamp(str_time, format):
	time_tuple = time.strptime(str_time, format) 
	return int(time.mktime(time_tuple))