有谁可以弄清楚为什么这两个结果完全不同：
导入重新
a = re.findall(r'\w+(?=,|\.)',"They were three: Felix, Victor, and Carlos.") ; print(a)
a = re.findall(r'\w+(?=(,|\.))',"They were three: Felix, Victor, and Carlos.") ; print(a)
第一次回归：[＆＃39; Felix＆＃39;，＆＃39; Victor＆＃39;，＆＃39; Carlos＆＃39;]
第二次回复：[＆＃39;，＆＃39;，＆＃39;，＆＃39;，＆＃39;。＆＃39;]
谢谢， 阿斯卡尼奥