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1.2 KiB
1.2 KiB
Python and Libraries Cheatsheet
Sum
sum(<list>)
Profile
import pycallgraph
graph = pycallgraph.output.GraphvizOutput()
graph.output_file = <filename>
whith pycallgraph.PyCallGraph(output=graph):
<code>
SQLite
import sqlite3
db = sqlite3.connect(<filename>)
Read
cursor = db.execute(<query>)
if cursor:
cursor.<fetchone/fetchall>()
db.close()
Write
db.execute(<query>)
db.commit()
Curses
import curses
def main():
curses.wrapper(draw)
def draw(screen):
screen.clear()
screen.addstr(0, 0, "Press ESC to quit.")
while screen.getch() != 27:
pass
Regex
import re
re.sub(<regex>, <new>, <text>)
re.search(<regex>, <text>)
Threading
import threading
Thread
thread = threading.Thread(target=<function>, args=(<first arg>, ))
thread.start()
thread.join()
Lock
lock = threading.Rlock()
lock.acquire()
lock.release()
Bottle
import bottle
Run
bottle.run(host='localhost', port=8080)
bottle.run(host='0.0.0.0', port=80, server='cherypy')