Python 实用 100 条命令(建议收藏)

python3 --version

python3 -VV

python3 -c "import sys; print(sys.executable)"

python3 -c "import sys; print(*sys.path, sep='\n')"

python3 -c "import platform; print(platform.platform())"

python3 -c "print(sum(range(101)))"

python3 -m http.server 8000

python3 -i app.py

python3 -I script.py

python3 --help-all

python3 -m venv .venv

source .venv/bin/activate

python -m pip install --upgrade pip

python -m pip install 'requests==2.32.5'

python -m pip install -r requirements.txt

python -m pip list

python -m pip list --outdated

python -m pip show requests

python -m pip check

python -m pip freeze > requirements-lock.txt

python3 -m pydoc json

python3 -m pydoc -p 8080

python3 -c "import json; print(json.__file__)"

python3 -c "help('modules')"

python3 -m py_compile app.py

python3 -m compileall -q src

python3 -m ast app.py

python -m black .

python -m ruff check .

python -m mypy src

python3 -c "from pathlib import Path; print(Path('app.log').read_text(encoding='utf-8'))"

python3 -c "from pathlib import Path; Path('status.txt').write_text('ok\n', encoding='utf-8')"

python3 -c "from pathlib import Path; print(*Path('.').rglob('*.py'), sep='\n')"

python3 -c "import hashlib,pathlib; print(hashlib.file_digest(pathlib.Path('pkg.tgz').open('rb'),'sha256').hexdigest())"

python3 -m json.tool input.json

python3 -m json.tool input.json >/dev/null

python3 -c "import csv; print(*csv.DictReader(open('data.csv',encoding='utf-8')),sep='\n')"

python3 -m zipfile -c backup.zip data/

python3 -m zipfile -l backup.zip

python3 -m zipfile -e backup.zip restore/

python3 -c "from datetime import datetime,timezone; print(datetime.now(timezone.utc).isoformat())"

python3 -c "from datetime import date,timedelta; print(date.today()+timedelta(days=7))"

python3 -c "from datetime import datetime; print(datetime.strptime('2026-07-27','%Y-%m-%d'))"

python3 -c "import re; print(re.findall(r'\\b(?:\\d{1,3}\\.){3}\\d{1,3}\\b',open('app.log').read()))"

python3 -c "import re; print(re.sub(r'password=\\S+','password=***','user=a password=secret'))"

python3 -c "from urllib.parse import quote; print(quote('金仓 数据库'))"

python3 -c "import base64; print(base64.b64encode(b'hello').decode())"

python3 -c "import base64; print(base64.b64decode('aGVsbG8=').decode())"

python3 -c "import uuid; print(uuid.uuid4())"

python3 -c "import secrets; print(secrets.token_urlsafe(32))"

python3 -c "import socket; print(socket.gethostbyname_ex('example.com'))"

python3 -c "import socket; print(socket.create_connection(('127.0.0.1',8000),3).getpeername())"

python3 -c "from urllib.request import urlopen; print(urlopen('https://example.com',timeout=5).status)"

python3 -c "from urllib.parse import urlparse; print(urlparse('https://example.com/a?q=1'))"

python3 -c "import os; print(os.getenv('PATH'))"

python3 -c "from pathlib import Path; print(Path.cwd())"

python3 -c "import os; print(os.process_cpu_count())"

python3 -c "import subprocess; subprocess.run(['git','status','--short'],check=True)"

python3 -c "import subprocess; print(subprocess.check_output(['uname','-r'],text=True).strip())"

python3 -c "import resource; print(resource.getrlimit(resource.RLIMIT_NOFILE))"

python3 -m sqlite3 app.db

python3 -c "import sqlite3; print(sqlite3.connect('app.db').execute('select sqlite_version()').fetchone())"

python3 -c "import sqlite3; c=sqlite3.connect('app.db'); c.execute('create table if not exists t(id integer primary key,name text)'); c.commit()"

python3 -c "import sqlite3; a=sqlite3.connect('app.db'); b=sqlite3.connect('backup.db'); a.backup(b)"

python3 -c "import asyncio; asyncio.run(asyncio.sleep(1,result='done'))"

from concurrent.futures import ThreadPoolExecutor

with ThreadPoolExecutor(4) as pool:

　　print(list(pool.map(str.upper, ["a", "b", "c"])))

from concurrent.futures import ProcessPoolExecutor

with ProcessPoolExecutor() as pool:

　　print(list(pool.map(abs, [-1, -2, -3])))

from queue import Queue

q = Queue(); q.put("task"); print(q.get())

python3 -c "import subprocess; subprocess.run(['sleep','1'],timeout=2,check=True)"

import asyncio

asyncdef main():

　　await asyncio.gather(*(asyncio.to_thread(print, x) for x in range(5)))

asyncio.run(main())

python3 -m unittest discover -s tests -v

python3 -m unittest tests.test_api.ApiTest.test_health

python -m pytest -q

python -m pytest -k health -vv

python -m pytest -x

python -m coverage run -m pytest

python -m coverage report -m

python3 -m pdb app.py

python3 -m pdb -c continue app.py

python3 -X dev app.py

python3 -m timeit "sum(range(1000))"

python3 -m timeit -s "x=list(range(1000))""sum(x)"

python3 -m cProfile -o profile.pstats app.py

python3 -c "import pstats; pstats.Stats('profile.pstats').sort_stats('cumulative').print_stats(20)"

python3 -X importtime -c "import asyncio"

python3 -X tracemalloc=10 app.py

python3 -X faulthandler app.py

python3 -W error app.py

python3 -B app.py

python3 -c "import gc; print(gc.get_stats())"

python -m pip install -U build

python -m build

python -m build --wheel

python -m twine check dist/*

python -m twine upload --repository testpypi dist/*

python -m pip install dist/example-1.0.0-py3-none-any.whl

python -m pip install -e .

python3 -m zipapp src -m 'app:main' -o app.pyz

python3 -m zipfile -l dist/example-1.0.0-py3-none-any.whl

python -m ruff check . && python -m pytest -q && python -m build