如果每个时间戳前面都有字符串，则应使用count方法（例如num = string.count("time=")）查找字符串中出现的次数
然后，您可以在这个范围内使用for循环来查找实际的字符串。

times = []
index = 0
for i in range(0, num):
    time = string.index("time=", index)  # search for "time=", starting from index
    times.append(string[time+6:time+14])
    index = time+1

然后，您可以将字符串拆分为小时-分钟-秒整数字符串，如下所示：

hms = [timestr.split(":") for timestr in times]

总之，下面的完整代码应该足够工作了

string = '<time=”08:00:00"><type=ad> some text 1 <time=”08:02:24"></type=ad> some text 2 <time=”08:10:18"><type=ad> some text 3 <time=”08:12:20"></type=ad>'
num = string.count("time=")
times = []
index = 0
for i in range(0, num):
    time = string.index("time=", index)  # search for "time=", starting from index
    times.append(string[time+6:time+14])
    index = time+1
print(times)
hms = [timestr.split(":") for timestr in times]
print(hms)

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