pip install -r requirements.txt -t /path/to/directory

pip install -r requirements.txt -t .

import this

The Zen of Python, by Tim Peters

Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the temptation to guess.
There should be one-- and preferably only one --obvious way to do it.
Although that way may not be obvious at first unless you're Dutch.
Now is better than never.
Although never is often better than *right* now.
If the implementation is hard to explain, it's a bad idea.
If the implementation is easy to explain, it may be a good idea.
Namespaces are one honking great idea -- let's do more of those!

Math.random().toString(36).replace(/[^a-z]+/g, '').slice(0, 5);

from tkinter import Tk
r = Tk()
r.withdraw()
r.clipboard_clear()
r.clipboard_append('i can has clipboardz?')
r.update() # now it stays on the clipboard after the window is closed
r.destroy()

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()