Question

我通过迭代我无法解释的文件来获取行为。

with open("processed.txt", "r") as processed:
    next(processed)
    for row in processed:
        processedList = row.split("\t")
        print processedList
        noi = processedList[0]
        area = processedList[2]

这给了我错误＆＃34;列表索引超出范围＆＃34;。发生错误的print processedList输出是

    [´ 2444´, ´´]

然而，当我进入我的文件processed.txt并检查导致错误的相应行时，我有这个：

2444    13876839.0465   4.5976656692    567919.110661   Dies und Das

怎么回事？

Answer 1

$ python processtext.py
['26384   13876839.0465   4.59700590692   637919.110661   Sport und Freizeitanlagen\n']
Traceback (most recent call last):
  File "code.py", line 7, in <module>
    area = processedList[2]
IndexError: list index out of range

在您的代码中，每一行都作为单个元素列表处理。所以processedList [2]自然会引发IndexError。

我将其编辑为此。

with open("pr.txt", "r") as processed:
    processed.next()
    for row in processed:

        row = row.split()

        print row
        noi = row[0]
        area = row[2]
        print noi
        print area

输出

$ python processtext.py
['23456', '134567.678900', '23456.5678909', '4567878.54566', 'Fremd', 'und', 'Geheimnsvoll']
23456
23456.5678909



#pr.txt (2 tabs (1 tab = 2 space))
23456   134567.678900   23456.5678909   4567878.54566   Fremd und Geheimnsvoll

Answer 2

我只是将您的代码和示例“processed.txt”复制粘贴。将3个空格更改为选项卡后，它对我运行正常，不会产生错误。由于print processedList不打印整行，我怀疑\t中23456和134567.678900之间存在processed.txt以外的内容;也许是\0？

Answer 3

这不是您问题的直接答案，但它看起来很像csv内置模块可以更清洁地执行您想要的操作。

例如：

import csv
with open("processed.txt", "r") as processed:
    csvreader = csv.reader(processed, delimiter='\t')
    for row in csvreader:
        processedList = row
        print processedList
        noi = processedList[0]
        area = processedList[2]

读取文件不是整行

3 个答案: