python linux timestamp to date time and reverse

python, python-3.3

Solution

From string to timestamp, use `time.strptime()`, passing the resulting `struct_time` tuple to `time.mktime()`; your timestamp uses milliseconds, not the UNIX seconds-as-floating-point value, so you need to multiply by 1000:

import time

datestr = "Wed Apr 24 19:25:06 2013 GMT"
time.mktime(time.strptime(datestr, "%a %b %d %H:%M:%S %Y %Z")) * 1000

In the other direction, use `time.strptime()`, passing in a `struct_time` tuple created by `time.gmtime()`, dividing the timestamp by 1000 first:

timestamp = 1366831506000
time.strftime("%a %d %b %Y %H:%M:%S GMT", time.gmtime(timestamp / 1000.0))

Demo:

>>> datestr = "Wed Apr 24 19:25:06 2013 GMT"
>>> time.mktime(time.strptime(datestr, "%a %b %d %H:%M:%S %Y %Z")) * 1000
1366827906000.0
>>> timestamp = 1366831506000
>>> time.strftime("%a %d %b %Y %H:%M:%S GMT", time.gmtime(timestamp / 1000.0))
'Wed 24 Apr 2013 19:25:06 GMT'

Problem

i would like to know how to convert datetime `Wed Apr 24 19:25:06 2013 GMT` into Linux timestamp `1366831506000` (13 digits)] and reverse using python. for example: ``` Wed Apr 24 19:25:06 2013 GMT ``` to ``` 1366831506000 ``` and from ``` 1366831506000 ``` to ``` Wed Apr 24 19:25:06 2013 GMT ```

Original source