Question

我写了一个程序，可以使用google的api找到两点之间的距离。我对大多数问题进行了排序，但只有一个问题是回忆，即如果用户输入任何随机单词和数字，那么我收到错误'NoneType'对象没有属性'纬度'。

基本上我想检查用户是否仅输入城市名称或城市名称，状态（如MA，NY等），程序应拒绝其余输入。

我该如何解决这个问题？

from geopy.geocoders import Nominatim

from geopy.distance import vincenty

from geopy.distance import great_circle

geolocator = Nominatim()
try:
    #Asking user for input 
    Location = raw_input('Enter the Final location in the format of ctiyname or cityname state name, please avoid "," to separte cityname and statename :-') 
    #New line char
    print "\n"
except:
    #Printing error message 
    print "location not found"
    #Using "raise SystemExit" for program termination if file not found
    raise SystemExit
location_2 = geolocator.geocode(Location)
#Getting the coordinates of users location
coord_2 = (location_2.latitude, location_2.longitude)
#using static location
Location_1 = 'Hoboken'
#static location coordinates 
coord_1 = (40.7433066, -74.0323751)

print "The static location is",Location_1,"and its geographical coordinates are",coord_1,"\n"

print "The target location is ",Location,"and its geographical coordinates are",coord_2,"\n"

print "The distance between the two destinations by 'Vincenty distance' method in miles is :",(vincenty (coord_1, coord_2).miles),"\n"

print "The distance between the two destinations by 'great_circle'method in miles is :",(great_circle (coord_1, coord_2).miles),"\n"

从用户获取输入的问题

0 个答案: