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.
├── bin
│   ├── arch -> /bin/busybox
│   ├── ash -> /bin/busybox
│   ├── base64 -> /bin/busybox
│   ├── bbconfig -> /bin/busybox
│   ├── busybox
│   ├── cat -> /bin/busybox
│   ├── chgrp -> /bin/busybox
│   ├── chmod -> /bin/busybox

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number1| x|        name
     4x| 3|          Hi
      2| 1|808890312093
      5|Hi|         Bye

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urls_to_download = ['baidu.com', 'taobao.com', 'zhihu.com', 'douban.com']

done_count = 0
done_count_lock = Lock()

def download(url):
    requests.get(url)
    with done_count_lock:
        done_count += 1
    print(f"currnet process: {done_count} / {len(urls_to_download)}")

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def foo(num):
    print("foo run")
    return num ** 20


def bar(x):
    if 0:
        print(x)

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import ctypes

def deref(addr, typ):
    return ctypes.cast(addr, ctypes.POINTER(typ))

deref(id(3), ctypes.c_int)[6] = 2

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#!/usr/bin/env python
import sys
from prompt_toolkit import prompt
from prompt_toolkit.completion import WordCompleter
from prompt_toolkit.contrib.regular_languages.compiler import compile
from prompt_toolkit.lexers import Lexer, PygmentsLexer, SimpleLexer
from prompt_toolkit.contrib.regular_languages.completion import GrammarCompleter
from prompt_toolkit.contrib.regular_languages.lexer import GrammarLexer

animal_completer = WordCompleter(

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" ## Ussage
" install vim-plug( https://github.com/junegunn/vim-plug )
" curl -fLo ~/.vim/autoload/plug.vim --create-dirs \
"     https://raw.githubusercontent.com/junegunn/vim-plug/master/plug.vim
" Run: PlugInstall

" General settings --------------------{{{
set encoding=utf-8
let mapleader=','
syntax enable

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import os

parent_pid = os.getpid()
print("parent pid: ", parent_pid)

forked_pid = os.fork()
print("forked_pid: ", forked_pid)

parent_pid = os.getpid()
print("my pid: ", parent_pid)

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# -*- coding: utf-8 -*-
import os
import sys
from prompt_toolkit import prompt

pid = os.getpid()
print("old: ", pid)

forked_pid = os.fork()
print("forked pid: ", forked_pid)

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class Foo:
    foo = "hello"

    def print(self):
        print(self.foo)


class Bar:
    foo = "world"