Question

我正在研究将csv文件转换为ArcGIS shapefile的项目，这涉及将输出写入单独的文件。我已经为每一行中的每一列创建了一个列表，并尝试索引列36和37.但是，我在执行此操作时收到list index out of range错误消息。关于我可能在做什么的任何建议？

while line:
    count = count + 1
    line = inFile.readline()
    print 'Row', count, 'line info=', line[:72]
    lineList = line.split(',')
    newList = lineList[:72]
    print 'line info =', newList   
    for item in newList[36]:
        item.replace("", "0")
    for item in newList[37]:
        item.replace("", "0")
    newLine = ','.join(newList)
    newLine = newLine + '\n'   
    formatLine = newLine.replace("/","_")
    outFile.write(formatLine)

Answer 1

如果您可以编辑问题以包含错误所说的索引超出范围问题，那将会有所帮助。

我认为这个问题可能就是这个问题：

while line: # line is something other than whitespace
    line = inFile.readline() # next line becomes whitespace, there might be a trailing newline character in the file
    ...
    newList = line.split(',')[:72] # Even if line.split(',') doesn't return a list with at least 72 values, there will not be an error here- it will merely return a shorter list.
    for item in newList[36]: # newList is probably an empty list at this point.
    ...

另外，我在Python shell中输入以下内容：

>>> bool("")
False
>>> bool(" ")
True
>>> bool("\n")
True

如您所见，如果有一条线只有一个空格，那么循环也会继续。

＆＃39; for＆＃39;中的索引超出范围环

1 个答案: