当有许多其他实例时，仅打印一个实例

Question

当试图追加comment到x ，只有一个实例comment正在印刷，尽管是有许多人。

    with open("testingusercomments.txt", "r") as a, open("testingusercommentstmp.txt", "a") as x:
        try:
            for comment in r.redditor("username").comments.new(limit=None):
                if comment not in a.read().split("\n"):
                    print(comment)
                    x.append(comment)

尽管此代码仅返回一个comment实例，但以下代码返回了适当的数量。

with open("testingusercomments.txt", "r") as a, open("testingusercommentstmp.txt", "a") as x:
    try:
        for comment in r.redditor("username").comments.new(limit=None):
            if comment not in a.read().split("\n"):
                print(comment)

搜索注释时将问题附加到文件上有问题吗？ 有什么我想解决的东西吗？

Answer 1

尽管我不确定原因，但已经找到了解决方案。

x = []
for comment in r.redditor("username").comments.new(limit=None):
    if comment not in x:
        x.append(comment)