Python解析文件中的行

Question

Python 新手。我正在逐行读取文件:

with open("graph.txt", "r") as f:
    comList = f.readlines()
    print(comList)
    edge_u = [x[0] for x in comList]
    edge_v = [x[1] for x in comList]

graph.txt 有:

[(0, 7), (1, 9), (1, 9), (2, 0)]

[(2, 1), (2, 1), (3, 6)]

我原以为 readlines 会逐行解析文件，因此会将文本解析为列表列表。但它将其解析为字符串列表。因此我无法执行其他两个操作。尝试打印 edge_u 并了解其解析内容。如何处理？谢谢。

Answer 1

你可以试试这个:

import ast

with open("test.txt", "r") as f:
    for line in f:
        li = ast.literal_eval(line)
        edge_u = [x[0] for x in li]
        edge_v = [x[1] for x in li]