替换2d python列表中的字符串

Question

我在文本文件中读取行，然后用空格分割这些行，给我一个2d列表。嵌入式数组中的某些字符串包含我尝试使用str.replace过滤掉的垃圾，但它无效。

import os

infile = 'CMULEX.txt'

data = []
with open(infile, 'r') as f:
    read_data = f.readlines()

    for row in read_data[:5]:
        split_line = (row.split())
        data.append(split_line)

for line in data[:5]:
    for wd in line:
        wd = wd.replace('Coda', '')

Answer 1

wd是一个局部变量。它不是＆＃34;指针＆＃34;回到列表。列表理解似乎是一个优雅的解决方案：

for row in read_data[:5]:
    split_line = (row.split())
    data.append([wd.replace("Coda", "") for wd in split_line])

Answer 2

For line in data[:5]:
   line[:] = [ '' if x == 'Coda' else x for x in line]