Python 从经纬度坐标获取时区？
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Getting Time Zone from Lat Long Coordinates?
提问by John Smith
I am trying to get the time zones for latitude and longitude coordinates but am having a few problems The mistakes are probably very basic
我正在尝试获取经纬度坐标的时区，但遇到了一些问题错误可能非常基本
I have a table in a database with around 600 rows. Each row contains a lat long coordinate for somewhere in the world I want to feed these co-ordinates into a function and then retrieve the time zone. The aim being to convert events which have a local time stamp within each of these 600 places into UTC time
我在数据库中有一个表，大约有 600 行。每一行都包含世界上某个地方的经纬度坐标，我想将这些坐标输入一个函数，然后检索时区。目的是将在这 600 个地方中的每个地方都具有本地时间戳的事件转换为 UTC 时间
I found a blog postwhich uses a piece of codeto derive timezones from geographical coordinates.
When I try to run the code, I get the error geonames is not defined. I have applied for an account with geonames.
当我尝试运行代码时，出现错误geonames is not defined。我已经申请了 geonames 的帐户。
I think I have just saved the function file in the wrong directory or something simple. Can anyone help
我想我刚刚将函数文件保存在错误的目录或简单的目录中。谁能帮忙
#-------------------------------------------------------------------------------
# Converts latitude longitude into a time zone
# REF: https://gist.github.com/pamelafox/2288222
# REF: http://blog.pamelafox.org/2012/04/converting-addresses-to-timezones-in.html
#-------------------------------------------------------------------------------
geonames_client = geonames.GeonamesClient('Username_alpha')
geonames_result = geonames_client.find_timezone({'lat': 48.871236, 'lng': 2.77928})
user.timezone = geonames_result['timezoneId']
采纳答案by Manuel Riel
This works as expected:
这按预期工作：
import geonames
geonames_client = geonames.GeonamesClient('demo')
geonames_result = geonames_client.find_timezone({'lat': 48.871236, 'lng': 2.77928})
print geonames_result['timezoneId']
Output:
输出：
'Europe/Paris'
回答by Bilal
import requests
lat = 48.871236 ## your latitude
lon = 2.77928 ## your longitude
url = "http://api.geonames.org/timezoneJSON?formatted=true&lat={}&lng={}&username=demo".format(lat,lon)
r = requests.get(url) ## Make a request
return r.json()['timezoneId'] ## return the timezone
回答by tuxayo
With tzwhere and pytz:
使用 tzwhere 和 pytz：
import datetime
import pytz
from tzwhere import tzwhere
tzwhere = tzwhere.tzwhere()
timezone_str = tzwhere.tzNameAt(37.3880961, -5.9823299) # Seville coordinates
timezone_str
#> Europe/Madrid
timezone = pytz.timezone(timezone_str)
dt = datetime.datetime.now()
timezone.utcoffset(dt)
#> datetime.timedelta(0, 7200)
回答by rakslice
I was able to do a lookup suitable for my purposes using timezonefinder:
我能够使用timezonefinder 进行适合我的目的的查找：
import datetime
import timezonefinder, pytz
tf = timezonefinder.TimezoneFinder()
# Get the tz-database-style time zone name (e.g. 'America/Vancouver') or None
timezone_str = tf.certain_timezone_at(lat=49.2827, lng=-123.1207)
if timezone_str is None:
print "Could not determine the time zone"
else:
# Display the current time in that time zone
timezone = pytz.timezone(timezone_str)
dt = datetime.datetime.utcnow()
print "The time in %s is %s" % (timezone_str, dt + timezone.utcoffset(dt))
There's a discussion of the methods of timezonefinder and its limitations on its pypi page.
在其 pypi 页面上讨论了 timezonefinder 的方法及其限制。
timezonefinderand pytzcan be found in the pippackages of the same name.
timezonefinder并且pytz可以pip在同名的包中找到。
