python - 读取 CSV 文件中的所有列？

Question

我正在尝试读取 CSV 文件，然后获取每列中的所有值并将其放入单独的列表中。我不想要按行的值。由于 CSV 读取器只允许循环浏览文件一次，因此我使用eek() 方法返回到开头并读取下一列。除了使用 Dict 映射之外，还有更好的方法吗？

infile = open(fpath, "r")
reader = csv.reader(infile)    

NOUNS = [col[0] for col in reader]
infile.seek(0)  # <-- set the iterator to beginning of the input file

VERBS = [col[1] for col in reader]
infile.seek(0)
ADJECTIVES = [col[2] for col in reader]
infile.seek(0) 
SENTENCES = [col[3] for col in reader]

Answer 1

像这样的事情可以一次性完成:

kinds = NOUNS, VERBS, ADJECTIVES, SENTENCES = [], [], [], []
with open(fpath, "r") as infile:
    for cols in csv.reader(infile):
        for i, kind in enumerate(kinds):
            kind.append(cols[i])