The UTC time is formatted like this
"Tue 24 Dec 2013 5:53 AM UTC"
Is there a built-in function to convert it to milliseconds or I have to write my own scripts for it?
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Martijn Pieters
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nan
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1There are plenty of posts here on Stack Overflow that show you how to parse that format to either a `datetime.datetime` or a `time.time_struct` value. Have you checked out those posts first? – Martijn Pieters Jan 27 '14 at 12:49
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`datetime.strptime` will parse it to a datetime given the right format, then milliseconds should be easy – RemcoGerlich Jan 27 '14 at 12:50
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you can use this: `time.mktime(time.gmtime(time.time()))` – Furquan Khan Jan 27 '14 at 12:53
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@FurquanKhan: How does that parse the format? – Martijn Pieters Jan 27 '14 at 12:55
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I wrote it before the edit was made. – Furquan Khan Jan 27 '14 at 12:56
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@FurquanKhan: I made the only edit, and that edit was to add a tag. – Martijn Pieters Jan 27 '14 at 12:57
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@SteveBarnes: This is not a ISO formatted date. – Martijn Pieters Jan 27 '14 at 12:58
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Your input string doesn't even have seconds of precision... – Wooble Jan 27 '14 at 14:03
1 Answers
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The obvious answer, using the time module with time.strptime() doing the parsing:
import time
timetup = time.strptime(inputstring, '%a %d %b %Y %I:%M %p %Z')
milliseconds = time.mktime(timetup) * 1000
This does require that you don't set the locale in Python, leaving it at the default C locale, or only set it to a English locale. The %a and %b formatters only look for strings that match the configured locale, and only the C and English locales match the input strings.
Demo:
>>> import time
>>> inputstring = "Tue 24 Dec 2013 5:53 AM UTC"
>>> timetup = time.strptime(inputstring, '%a %d %b %Y %I:%M %p %Z')
>>> time.mktime(timetup) * 1000
1387864380000.0
This does assume that by milliseconds you meant milliseconds since the UNIX epoch.
Martijn Pieters
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OK. thanks. I did a search before posting this question. What I found were solutions for parsing strings with only numbers as input. I thought I would have to convert those "Mon""Tue" or months like "Jan" "Feb" to numbers first before using the function. Thanks – nan Jan 27 '14 at 13:03
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Do include in your post what you found while trying to solve the problem on your own; it helps us determine if there is a duplicate post here or that you at least tried to find a solution elsewhere first. – Martijn Pieters Jan 27 '14 at 13:05