StackOverflow2013

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PO
primarykey
Id
17257177
data
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0
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0
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CreationDate
2013-06-23T02:22:41.347
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2015-03-14T20:22:32.690
LastEditDate
2017-05-23T12:25:07.127
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-1
OwnerUserId
4279
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12165691
PostTypeId
2
Score
22
ViewCount
0
LastEditorDisplayName
text
Body
To convert a datetime with timezone to epoch (POSIX timestamp): <pre><code>from datetime import datetime import pytz tz = pytz.timezone('CST6CDT') # a datetime with timezone dt_with_tz = tz.localize(datetime(2012, 8, 28, 19, 33, 50), is_dst=None) # get timestamp ts = (dt_with_tz - datetime(1970, 1, 1, tzinfo=pytz.utc)).total_seconds() # -> 1346200430.0 </code></pre> It is how <code>datetime.timestamp</code> method is implemented for timezone-aware <code>datetime</code> objects in Python 3. To get "now epoch": <pre><code>from datetime import datetime now_epoch = (datetime.utcnow() - datetime(1970, 1, 1)).total_seconds() </code></pre> Or (assuming <code>time</code> uses POSIX epoch): <pre><code>import time now_epoch = time.time() </code></pre> Getting "beginning of current day epoch" is more complex because current day may be different in different timezones: <pre><code>from datetime import datetime, time import pytz tz = pytz.timezone('CST6CDT') # get current date in given timezone today = datetime.now(tz).date() # -> datetime.date(2013, 6, 22) # get beginning of current day in given timezone as a datetime with timezone midnight = tz.localize(datetime.combine(today, time(0, 0)), is_dst=None) # -> datetime.datetime(2013, 6, 22, 0, 0, tzinfo=<DstTzInfo 'CST6CDT'...>) # get timestamp ts = (midnight - datetime(1970, 1, 1, tzinfo=pytz.utc)).total_seconds() # -> 1371877200.0 </code></pre> See <a href="https://stackoverflow.com/a/11236372/4279">How do I get the UTC time of “midnight” for a given timezone?</a>. To get "beginning of current day epoch" assuming UTC date: <pre><code>from datetime import datetime, date # get current date in UTC utc_date = datetime.utcnow().date() # -> datetime.date(2013, 6, 23) # get timestamp ts = (utc_date - date(1970, 1, 1)).days * 86400 # -> 1371945600 </code></pre> See <a href="https://stackoverflow.com/a/8778548/4279">Converting datetime.date/datetime.datetime to UTC timestamp in Python</a>.
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1. This table or related slice is empty.
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1. POpython - datetime with timezone to epoch
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1. PTAnswer
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1. USCommunity
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1. USjfs
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