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我有以下内容：

import psycopg2
from openpyxl import Workbook
wb = Workbook()
wb.active =0
ws = wb.active
ws.title = "Repair"
ws.sheet_properties.tabColor = "CCFFCC"

print(wb.sheetnames)

import datetime
import smtplib
import mimetypes

import logging
LOG_FILENAME = 'log-production.out'
logging.basicConfig(filename=LOG_FILENAME, level=logging.DEBUG)

logging.debug('This message should go to the log file')

from datetime import date, timedelta
import os, sys
try:
    conn = psycopg2.connect("connection string")
except:
    print "I am unable to connect to the database"

cur = conn.cursor()
cur.execute("""SELECT ams.unit.line,ams.unit.work_order,ams.unit.model_num, ams.unit.revision ,ams.unit.serial_num,ams.unit.lpn, ams.unit_repair_detail.level_1_name as level_1,
          ams.unit_repair_detail.level_2_name as level_2, ams.unit_repair_detail.level_3_name as level_3,ams.unit_repair_detail.level_4_name as level_4,ams.unit_repair.date_started AT TIME ZONE 'UTC' as date_started,ams.unit_repair.date_completed AT TIME ZONE 'UTC' as date_completed
                   FROM ams.unit_repair
                        left join 
                            ams.unit
                                    on ams.unit_repair.unit_id=ams.unit.id and 
                                    LOWER(ams.unit_repair.line) =  LOWER(ams.unit.line)
                        right join 
                            ams.unit_repair_detail
                                    on ams.unit_repair.sid = ams.unit_repair_detail.unit_repair_sid
                                    WHERE 
                                     LOWER(ams.unit.line) like ('%') and 
                                      ams.unit_repair_detail.date_created  >= (CURRENT_TIMESTAMP  AT TIME ZONE 'UTC'  - interval '24 hours')
                                     AND ams.unit_repair_detail.date_created <= (CURRENT_TIMESTAMP AT TIME ZONE 'UTC')
                                     and LOWER(ams.unit.model_num) like LOWER('%')

                                    order by  model_num asc""")
rows = cur.fetchall()
print "\nShow me the databases:\n"
col_names = ["Line","Work order","Model number","Revision","Serial number","Lpn","Level 1","Level 2","Level 3","Level 4","Date started","Date completed"]    

ws.append(col_names)
for row in rows:
    ws.append(row)

这是可行的，但是在夏令时更改后一切都坏了...查询在数据库上返回正确的数据，但是当我从 python 脚本运行它并创建文件时，它仍然处于 UTC 时间。我不知道我在做什么将我的日期转换回 UTC ......有人可以帮助我吗？我尝试将顶部的时区设置为中央时区，因此它将UTC转换为中央时区，但没有运气

cur.execute("SET TIME ZONE 'America/Chicago';")

我也试过

>>> import time
>>> offset = time.timezone if (time.localtime().tm_isdst == 0) else time.altzone
>>> offset / 60 / 60 * -1

我还尝试将我的 AT TIME ZONE UTC 更改为 CST，但没有运气......我在网上尝试了多种解决方案，但似乎没有任何效果。任何帮助将不胜感激！！

4

1 回答 1

1

以防万一将来有人遇到这样的事情...如果您将以下内容添加到查询中，我会发现问题

 `at time zone 'America/Chicago'

它将解决问题。不知何故at time zone UTC还不够你还需要指定输出时区

于 2017-03-17T18:43:16.913 回答