python - 从txt文件python中提取

Question

由于注释，我从 txt.file 中提取了跳过前几行的行。这样做之后，我有一组列表。如何仅获取第一个索引的值并将其附加到新列表中？

['364.00', '0.000', '0.000', '364.00', '28.00', '28.00', '0.00', '0.00']

['450.00', '0.000', '360.000', '450.00', '28.00', '28.00', '0.00', '0.00'] ['590.00', '0.000', '360.000', '590.00', '28.00', '28.00', '0.00', '0.00']

感谢帮助。

标签： python

Answer 1

“列表组”是什么意思？对于列表列表，可以这样做：

lists = [['450.00', '0.000', '360.000', '450.00', '28.00', '28.00', '0.00', '0.00'],
['590.00', '0.000', '360.000', '590.00', '28.00', '28.00', '0.00', '0.00']]

first_entries = [i[0] for i in lists]

print(first_entries)

输出： ['450.00', '590.00']