Python 错误 - IndexError：列表索引超出范围答案

【问题标题】：Python error - IndexError: list index out of rangePython 错误 - IndexError：列表索引超出范围
【发布时间】：2016-10-02 01:41:50
【问题描述】：

我正在学习 python，所以这听起来很简单，我正在尝试运行下面的代码，但我不断收到显示的错误消息，有什么想法可能导致它吗？

from geopy import geocoders
import csv

g_api_key = 'my_google_api_key'
g = geocoders.GoogleV3(g_api_key)

costco = csv.reader (open('costcolimited.csv'), delimiter = ',')

# Print header
print "Address, City, State, Zip Code, Latitude, Longitude"
for row in costco:
   full_addy = row[1]+ "," + row[2]+ "," + row[3] + "," + row[4]
   place, (lat,lng) = list (g.geocode(full_addy, exactly_one=FALSE))[0]
   full_addy + "," + str(lat) + "," + str(lng)

我遇到的错误

Traceback (most recent call last):
File "C:\Python27\geocodelocations.py", line 12, in <module>
full_addy = row[1]+ "," + row[2]+ "," + row[3] + "," + row[4]
IndexError: list index out of range

【问题讨论】：

请记住row 中的第一个元素是row[0]，而不是row[1]。

标签： python python-2.7

【解决方案1】：

该错误是由于引用超出列表范围的元素引起的。从您的代码中，可能是因为您从1 开始计算元素。请记住，在 python 列表中，索引从0 开始。如果这是您的情况，则将索引移入

full_addy = row[1]+ "," + row[2]+ "," + row[3] + "," + row[4]

到

full_addy = row[0]+ "," + row[1]+ "," + row[2] + "," + row[3]

否则，请检查您的数据结构并确保它与您的代码匹配。

谢谢

【讨论】：

【解决方案2】：

首先确保您的 CSV 文件有四列。尝试检查len(row) >= 4。如果它包含，您可以继续编写代码，但 Python 列表中的第一项由 0 索引引用。

试试这样的：

for row in costco:
   if len(row) < 4:
          print "Invalid file!"
          break
   full_addy = row[0]+ "," + row[1]+ "," + row[2] + "," + row[3]
   place, (lat,lng) = list (g.geocode(full_addy, exactly_one=FALSE))[0]
   full_addy + "," + str(lat) + "," + str(lng)

【讨论】：