python - 删除大 CSV 文件的第一行？

Question

我应该如何在 python 中删除一个大的 CSV 文件的第一行？我在这里查看了以前的解决方案，一个是:

with open("test.csv",'r') as f:
    with open("updated_test.csv",'w') as f1:
        f.next() # skip header line
        for line in f:
            f1.write(line)

这给了我这个错误:

f.next() # skip header line
AttributeError: '_io.TextIOWrapper' object has no attribute 'next'

另一个解决方案是:

with open('file.txt', 'r') as fin:
    data = fin.read().splitlines(True)
with open('file.txt', 'w') as fout:
    fout.writelines(data[1:])

这会带来内存问题!

Answer 1

将 f.next() 替换为 next(f)

with open("test.csv",'r') as f, open("updated_test.csv",'w') as f1:
    next(f) # skip header line
    for line in f:
        f1.write(line)