python | split函数时间复杂度

源码

    while (maxcount-- > 0) {
    while (i < str_len && STRINGLIB_isspace(str[i]))
        i++;
    if (i == str_len) break;
    j = i; i++;
    while (i < str_len && !STRINGLIB_isspace(str[i]))
        i++;
是O(n)

感谢：https://stackoverflow.com/questions/55113713/time-space-complexity-of-in-built-python-functions