UTC与本地时间字符串互相转换

 #!/usr/bin/env python
 import time
 import datetime

 # 格式自改
 UTC_FORMAT = '%Y-%m-%dT%H:%M:%SZ'
 LOCAL_FORMAT = '%Y-%m-%d %H:%M:%S'

 def utc2local(utc_str):
     utc_st = datetime.datetime.strptime(utc_str, UTC_FORMAT)
     local_time = datetime.datetime.fromtimestamp(time.time())
     utc_time = datetime.datetime.utcfromtimestamp(time.time())
     time_difference = local_time - utc_time
     local_st = utc_st + time_difference
     return local_st.strftime(LOCAL_FORMAT)

 def local2utc(local_str):
     local_st = datetime.datetime.strptime(local_str, LOCAL_FORMAT)
     time_struct = time.mktime(local_st.timetuple())
     utc_st = datetime.datetime.utcfromtimestamp(time_struct)
     return utc_st.strftime(UTC_FORMAT)

 local_time = utc2local('2017-03-21T02:05:53Z')
 print(local_time)

 utc_time = local2utc('2017-03-21 10:05:53')
 print(utc_time)