UBarney

# from https://stackoverflow.com/questions/7499767/temporarily-disable-auto-now-auto-now-add
# my model
class FooBar(models.Model):
    title = models.CharField(max_length=255)
    updated_at = models.DateTimeField(auto_now=True, auto_now_add=True)



# my tests
foo = FooBar.objects.get(pk=1)

UBarney

# coding=utf-8
# 详细语法说明见 https://www.python.org/dev/peps/pep-0318/#current-syntax
# 通过装饰器能够获取到调用函数的参数，函数执行的返回值，能够直接运行所装饰的函数
def checkType(*acceptedType): # 检查传入函数的参数类型
    print 'calling checkType with %s'%str(acceptedType)
    def warpper(fun): ## fun为下一个要执行的函数，可以把fun(fun1(fun2...))看作整体
        print fun.__name__
        def anotherFun(*calledArgs):  ## 最外层函数的参数 此处为 传入a的参数
            print calledArgs ##
            for i,j in zip(acceptedType, calledArgs):

UBarney

# Show the size of all the directories in the current directory and sort them by size.
du -h --max-depth=1 | sort -hr 
# Find Out Which Process Is Listening Upon a Port
netstat -tulpn
# find all files containing specific text on Linux
grep -rnw '/path/to/somewhere/' -e 'pattern'
# log CPU load
while true; do uptime >> uptime.log; sleep 1; done

UBarney

import logging, sys

class SingleLevelFilter(logging.Filter):
    def __init__(self, passlevel, reject):
        self.passlevel = passlevel
        self.reject = reject

    def filter(self, record):
        if self.reject:
            return (record.levelno != self.passlevel)

UBarney

import logging

class LogHandler(object):
    format = '%(levelname)s %(message)s'
    files = { 
        'ERROR': 'error.log',
        'CRITICAL': 'error.log',
        'WARN': 'warn.log',
    }   
    def write(self, msg):

UBarney

sudo apt-get update        # Fetches the list of available updates
sudo apt-get upgrade       # Strictly upgrades the current packages
sudo apt-get dist-upgrade  # Installs updates (new ones)

UBarney

#/usr/bin/python

import logging
from logging.handlers import RotatingFileHandler
from flask import Flask, request, jsonify
from time import strftime
import traceback

app = Flask(__name__)