Python 2.7.9 Demo - isinstance

看了一些基础的 Python 新手教程后,深深感觉到 Python 的简洁与强大,这是我的第一个 Python Demo.下面是完整代码与执行截图. 代码: # encoding: utf-8 ''' @author: Techzero @email: [email protected] @time: 2014-4-30 下午1:31:04 ''' import os import sys import cPickle as p class Person: def __init__(self,

用python爬虫算一下demo大师网站的总创收...... #!/usr/bin/env python #coding:utf-8 import requests import json from bs4 import BeautifulSoup def demodashi(url):     response = requests.get(url)     html = response.text     html = json.loads(html)     totalPage = htm

#coding=utf-8 #!/usr/bin/python import logging; a = 'abc'; print 'Y' if isinstance(a, str) else 'N';

转自:http://www.xinxingzhao.com/blog/2016/05/23/python-type-vs-isinstance.html Python在定义变量的时候不用指明具体的的类型,解释器会在运行的时候会自动检查 变量的类型,并根据需要进行隐式的类型转化.因为Python是动态语言,所以一般情 况下是不推荐进行类型转化的.比如"+"操作时,如果加号两边是数据就进行加法操 作,如果两边是字符串就进行字符串连接操作,如果两边是列表就进行合并操作,甚 至可以进行复数的运

一,友盟消息推送python服务端sdk地址和文档地址 1.sdk地址:http://dev.umeng.com/system/resources/W1siZiIsIjIwMTYvMDgvMTkvMTdfNDFfMzhfNzg2X3B1c2hfc2VydmVyX3B5c2RrLnppcCJdXQ/push-server-pysdk.zip 2.文档:http://dev.umeng.com/push/android/api-doc 二.python官方sdk代码中的错误(没错!官方代码有错.)

英文文档: isinstance(object, classinfo) Return true if the object argument is an instance of the classinfo argument, or of a (direct, indirect or virtual) subclass thereof. If object is not an object of the given type, the function always returns false.

select #coding=utf-8 #!/usr/bin/python import cx_Oracle; conn = None; cursor = None; try: conn = cx_Oracle.connect('username/[email protected]/sid'); cursor = conn.cursor(); cursor.execute('select t.empno, t.ename from scott.emp t'); # 取回的是列表,列表中包含元组

#coding=utf-8 #!/usr/bin/python import sys; print("The command line parameters are : "); for i in range(0, len(sys.argv)) : print str(i) + ' -> ' + sys.argv[i]; 日志 D:\python27_workspace>python 030.01.获取命令行参数.py param1 param2 param3 param4

#coding=utf-8 #!/usr/bin/python final_list = ('a', 1, 'b', 2, 'c', 3); print final_list[0]; print final_list[1:3]; print final_list * 2; print final_list + final_list + final_list; # 原组不能被重新赋值 # TypeError: 'tuple' object does not support item assignm