将列表写入CSV

Question

我有一个列表,如:

[[A], [B], [A,B], [B], [C], [A, B, C], [C, A]]

我想把它写成CSV文件,如:

A,
B,
A,B,
B,
C,
A,B,C,
C,A,

请考虑我有556,375个列表,每个列表包含至少20个变量.

Answer 1

要添加额外的逗号,只需在每行的末尾添加一个空单元格.

这是使用生成器理解的简短方法 writerows

import csv

l = [["A"], ["B"], ["A","B"], ["B"], ["C"], ["A", "B", "C"], ["C", "A"]]

with open("output.csv","w",newline="") as f:  # open("output.csv","wb") for Python 2
    cw = csv.writer(f)
    cw.writerows(r+[""] for r in l)