如何使用Python检查unicode字符串中是否存在时区

我试着用下面的代码来搜索str中的时区及其工作状态。

from datetime import datetime
date_posted=str("2014-05-12 00:00:00")
date_posted_zone=str("2015-01-20 08:28:16 UTC")
zone=date_posted_zone.split(" ")
print(zone[2])
def convert_timestamp(date_timestamp=None):
    if zone[2] in date_timestamp:
        d = datetime.strptime(date_timestamp, "%Y-%m-%d %H:%M:%S %Z")
    else:
        d = datetime.strptime(date_timestamp, "%Y-%m-%d %H:%M:%S")
    return d.strftime("%Y-%m-%d")

print convert_timestamp(date_posted_zone)

%Z 在时间戳值中;只有 strptime strftime )实际上可以使用格式字符。

def convert_timestamp(date_timestamp=None):
    try:
        d = datetime.strptime(date_timestamp, "%Y-%m-%d %H:%M:%S %Z")
    except ValueError:
        d = datetime.strptime(date_timestamp, "%Y-%m-%d %H:%M:%S")
    return d.strftime("%Y-%m-%d")

def convert_timestamp(date_timestamp):
    return date_timestamp.split()[0]

from dateutil import parser

datetime_no_timezone = parser.parse("2015-01-20 08:28:16")
datetime_with_timezone = parser.parse("2015-01-20 08:28:16+02:00")

if datetime_no_timezone.tz == None:
    # CODE ALWAYS GO THROUGH THIS
    pass

if datetime_no_timezone.tz:
    # CODE ALWAYS GO THROUGH THIS
    pass