Question

我正在使用Google Maps API探索PyMaps，这是我找到的示例代码 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

问题是我在运行程序时遇到错误，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(" ")

如果你没有在任何地方导入getcords功能，你可能会遇到麻烦。

# 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])

另外，我建议不要使用long作为变量名称，因为它是int类型。

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

找不到PyMaps变量

1 个答案: