为什么 return 值只有 nan？

Question

这是我尝试使用的代码运行，但我没有得到输出中的值，

import numpy
import geocoder

data = numpy.loadtxt(fname = 'Flywheel_SF.csv', delimiter = ',', dtype = numpy.ndarray)
start = list()
end = list()
z_code = numpy.zeros((101,2))

for i in range(1,101):
    s = geocoder.google([data[i,4], data[i,5]], method='reverse')
    e = geocoder.google([data[i,6], data[i,7]], method='reverse')
    start.append(s.postal)
    end.append(e.postal)
    z_code[i,0] = s.postal
    z_code[i,1] = e.postal


zipcode = [start, end]

print(z_code)

这是我得到的输出，

[[  0.   0.]
[ nan  nan]
[ nan  nan]
[ nan  nan]
[ nan  nan]
....
....
[ nan  nan]
[ nan  nan]
[ nan  nan]
[ nan  nan]
[ nan  nan]
[ nan  nan]]

输出应该是这样的，这些是经纬度转换后的邮政编码

[[     0.      0.]
[ 94105.  94103.]
[ 94133.  94108.]
[ 94133.  94133.]
[ 94114.  94122.]
[ 94104.  94128.]
[ 94128.  94066.]
......
......
[ 94128.  94066.]
[ 94118.  94116.]
[ 94109.  94102.]]

请帮忙，先谢谢了！

Answer 1

一个可能的原因是您发送给 google api 的请求数量。您每天只能拨打 google api 2500 次。

欲了解更多详情，请阅读： https://developers.google.com/maps/documentation/geocoding/usage-limits

为什么 return 值只有 nan？

why return value is only nan?

python

numpy

google-geocoder