Question

似乎第一个for循环仅考虑第一个csv文件中的第一行，并且不会继续进行比较。我试图用多种方法重写它，但现在我完全迷失了，所以我求助于你们。

任何人都可以告诉我是否像我在这里那样写代码时出错：

with open("./products.csv", mode="r") as products_list1:
    with open("./products2.csv", mode="r") as products_list2:
        with open("./results.csv", mode="a") as results:
            for i in products_list1:
                for j in products_list2:
                    jaccard = get_jaccard_sim(i, j)
                    if jaccard >= 0:
                        results.writelines(i+","+j+"\n"+","+str(jaccard))

Answer 1

在打开任何for循环之前，您应该执行以下操作：

pdt_list1 = products_list1.readlines()
pdt_list2 = products_list2.readlines()

并在pdt_list1和pdt_list2上执行操作。

这将解决问题！祝你好运！

Answer 2

您可以尝试

with open("./products.csv", mode="r") as products_list1:
    lines1 = products_list1.readlines()
with open("./products2.csv", mode="r") as products_list2:
    lines2 = products_list2.readlines()
with open("./results.csv", mode="a") as results:
    for i in lines1:
        for j in lines2:
            jaccard = get_jaccard_sim(i, j)
            if jaccard >= 0:
                results.writelines(i + "," + j + "\n" + "," + str(jaccard))

for循环和多个CSV文件的问题

2 个答案: