您没有使用值items.count(".") returnes。我还创建了一个解决方案，该解决方案不使用它，因为如果我们一次添加3个或更多，则在一行中添加.的数量将不起作用。

import textwrap
text = "We are having a long, long long very long sentence here. Just trying to test if it works. We are trying to test. Testing we do. All day. Long."
unique_character = textwrap.wrap(text, width=40)
period_count = 0
for items in unique_character:
    print(items)
    for l in items:
        if l == ".":
            period_count += 1
            if period_count % 2 == 0 and period_count:
                print("We hit second period")

实际上，需要将items.count的结果保存到一个变量中，并将其添加到累加器中。

import textwrap
text = "We are having a long, long long very long sentence here. Just trying to test if it works. We are trying to test. Testing we do. All day. Long."
unique_character = textwrap.wrap(text, width=40)
accumDots = 0
for line in unique_character:
    print(line)
    dots = line.count(".")
    if accumDots + dots >= 2:
        print("We hit second period")
        accumDots = 0
    else:
        accumDots += dots