PyMaps变量没有发现

Question

我戳在与谷歌地图API的PyMaps，这里是示例代码，我从 http://www.lonelycode.com/2008/12/04/google-maps-and-django/

def showmap(): 
from pymaps import Map, PyMap # import the libraries 

# Create a map - pymaps allows multiple maps in an object 
tmap = Map() 
tmap.zoom = 3 

# Latitude and lognitude - see the getcords function 
# to see how we convert from traditional D/M/S to the DD type 
# used by Googel Maps 

lat = 0.0 
long = 0.0 

# These coordinates are for Hong Kong 
dlat = "22 15 0 N" 
dlong = "114 10 60 E" 

dlat = dcode.lat.split(" ") 
dlong = dcode.long.split(" ") 

# Convert the coordinates 
lat = getcords(float(dlat[0]), float(dlat[1]), float(dlat[2]), dlat[3]) 
long = getcords(float(dlong[0]), float(dlong[1]), float(dlong[2]), dlong[3]) 

# Inserts html into the hover effect 
pointhtml = "Hello!" 

# Add the point to the map 
point = (lat, long, pointhtml, icon.id) 

tmap.setpoint(point) 
tmap.center = (1.757537,144.492188) 

# Put your own googl ekey here 
gmap = PyMap(key=GOOGLE_KEY, maplist=[tmap]) 
gmap.addicon(icon) 

# pymapjs exports all the javascript required to build the map! 
mapcode = gmap.pymapjs() 

# Do what you want with it - pass it to the template or print it! 
return mapcode 

发现问题是，我得到当我错误运行程序，我得到“NameError：全局名称'dcode'未定义”dcode究竟是什么，我在哪里可以找到它？这是错误的吗？

Answer 1

我的猜测是，它应该是这样的：

# These coordinates are for Hong Kong 
dlat = "22 15 0 N" 
dlong = "114 10 60 E" 

dlat = dlat.split(" ") 
dlong = dlong.split(" ") 

如果你还没有导入getcords功能随时随地任你可能会在这里遇到麻烦。

# Convert the coordinates 
lat = getcords(float(dlat[0]), float(dlat[1]), float(dlat[2]), dlat[3]) 
long = getcords(float(dlong[0]), float(dlong[1]), float(dlong[2]), dlong[3]) 

而且我建议你不要使用long作为变量名，因为它是一个int类型。

In [98]: long? 
Type:  type 
String Form:<type 'long'> 
Namespace: Python builtin