今天遇到一个一个问题，是将字符串类型的时间转化为UTC时间。例如time_str = "2009/11/09 12:23:23" 转化为UTC int型。

找了一些资料，发现time模块就能完成这个转换。

import time time_str = "2009/11/09 12:23:23" time_s = time.strptime(time_str,"%Y/%m/%d %H:%M:%S") utc_f = time.mktime(time_s) utc_i = int(time.mktime(time_s)) print time_s (2009, 11, 9, 12, 23, 23, 0, 313, -1) print utc_f 1257740603.0 print utc_t 1257740603

在linux中输入“date  +%s” 就能输出当前utc时间。

附录：

http://www.opengroup.org/onlinepubs/009695399/functions/strptime.html

Directive:

• %a - abbreviated weekday name
• %A - full weekday name
• %b - abbreviated month name
• %B - full month name
• %c - preferred date and time representation
• %C - century number (the year divided by 100, range 00 to 99)
• %d - day of the month (01 to 31)
• %D - same as %m/%d/%y
• %e - day of the month (1 to 31)
• %g - like %G, but without the century
• %G - 4-digit year corresponding to the ISO week number (see %V).
• %h - same as %b
• %H - hour, using a 24-hour clock (00 to 23)
• %I - hour, using a 12-hour clock (01 to 12)
• %j - day of the year (001 to 366)
• %m - month (01 to 12)
• %M - minute
• %n - newline character
• %p - either am or pm according to the given time value
• %r - time in a.m. and p.m. notation
• %R - time in 24 hour notation
• %S - second
• %t - tab character
• %T - current time, equal to %H:%M:%S
• %u - weekday as a number (1 to 7), Monday=1. Warning: In Sun Solaris Sunday=1
• %U - week number of the current year, starting with the first Sunday as the first day of the first week
• %V - The ISO 8601 week number of the current year (01 to 53), where week 1 is the first week that has at least 4 days in the current year, and with Monday as the first day of the week
• %W - week number of the current year, starting with the first Monday as the first day of the first week
• %w - day of the week as a decimal, Sunday=0
• %x - preferred date representation without the time
• %X - preferred time representation without the date
• %y - year without a century (range 00 to 99)
• %Y - year including the century
• %Z or %z - time zone or name or abbreviation
• %% - a literal % character

• python