def list_files(
    dir: str, ext: list = None, recursive: bool = True, excludes: list = None
):
    """
    Args:
        - dir, directory path.
        - ext, file extension list, lowercase letters. Default is None, which means all files.
        - recursive, Default is True, will list files in subfolders.
        - excludes, exclude folder or file name list, regexp pattern string. Default is None, which means all folders

    Tips:
        - How to get relative path of a file: os.path.relpath(file_path, dir_path)
        - How to get only name of a file: os.path.basename(file_path)

    Version:
        v0.2.0
        https://gist.github.com/nodewee/eae12e2b74beb82162b8b488648f1fdd
    """

    for f in os.scandir(dir):
        if excludes:
            is_ignore = False
            for pat in excludes:
                if re.search(pat, f.name):
                    is_ignore = True
                    break
            if is_ignore:
                continue

        if recursive:
            if f.is_dir():
                for item in list_files(f.path, ext, recursive, excludes):
                    yield item

        if f.is_file():
            if ext is None:
                yield f.path
            else:
                if os.path.splitext(f.name)[1].lower() in ext:
                    yield f.path

import os
# on macOS
def write_to_clipboard(text):
    command = f"echo '{text}' | pbcopy"
    os.system(command)

def read_from_clipboard():
    command = "pbpaste"
    return os.popen(command).read()

import sys
from PySide2.QtWidgets import QApplication

app = QApplication(sys.argv)
clipboard = app.clipboard()

print(clipboard.mimeData().formats())
print(clipboard.mimeData().data(clipboard.mimeData().formats()[0]))

app.closeAllWindows()
app=None

function clearTimeout() {
    var id = window.setTimeout(function() {}, 0);
    while (id--) {
        window.clearTimeout(id);
    }
}
clearTimeout();

function getScrollTop() {
    var scrollTop = 0,
        bodyScrollTop = 0,
        documentScrollTop = 0;
    if (document.body) {
        bodyScrollTop = document.body.scrollTop;
    }
    if (document.documentElement) {
        documentScrollTop = document.documentElement.scrollTop;
    }
    scrollTop =
        bodyScrollTop - documentScrollTop > 0
            ? bodyScrollTop
            : documentScrollTop;
    return scrollTop;
}

function getScrollHeight() {
    var scrollHeight = 0,
        bodyScrollHeight = 0,
        documentScrollHeight = 0;
    if (document.body) {
        bodyScrollHeight = document.body.scrollHeight;
    }
    if (document.documentElement) {
        documentScrollHeight = document.documentElement.scrollHeight;
    }
    scrollHeight =
        bodyScrollHeight - documentScrollHeight > 0
            ? bodyScrollHeight
            : documentScrollHeight;
    return scrollHeight;
}

function getWindowHeight() {
    var windowHeight = 0;
    if (document.compatMode == "CSS1Compat") {
        windowHeight = document.documentElement.clientHeight;
    } else {
        windowHeight = document.body.clientHeight;
    }
    return windowHeight;
}

//
function autoScroll() {
    if (getScrollTop() + getWindowHeight() < getScrollHeight()) {
        window.scrollTo({
            top: window.scrollY + 5,
            behavior: "smooth",
        });
        var timerId = setTimeout(autoScroll, 50);
        // stop when click
        document.addEventListener("click", (event) => {
            window.clearInterval(timerId);
        });
    }
}
autoScroll();

a = [1, 2, 3]
b = [3, 4, 5]
c = set(a).intersection(set(b))
print(list(c))
# [3]

div {
	pointer-events: none;
}