Python

>>> 1 and 2 and 33>>> False and 1 and 2false>>> 1 and 2 and 3 and 44>>> 1 and 2 and 3 and falsefalse>>> 1 or 2 or 31>>> false or 1 or 21>>> 1 and 2 and 3 or FALSE and 13 Boolean operations are performed in Python and and OR, but the actual value is

1, appendAppend new object to end of Word list>>>lst=[1,2,3]>>>lst.append (4) >>>lst[1,2,3,4]2. CountUsed to calculate the number of occurrences of an element in a list>>>[' to ', ' being ', ' or ', ' not ', ' to ', ' being ', ' this ', ' was ', ' a

DescriptionPython is generally low due to CentOS or Rhel OS, CENTOS6 The Python version is 2.6.6, but now the general Python version is 2.7 version, previously always in the operation of the source code upgrade Python, but this will lead to the use

Highlight the printed contentcontent: format: echo "\033[word background color; font Color m string \033[0m"For example:"\033[41;36m something here \033[0m"The something here can be converted to variables using the formatting of the characters:Where

To use the WITH statement, you first understand the concept of the context manager. With the context manager, the WITH statement can work. The following is a set of concepts related to the context manager and with statements. context Management

Import httplibimport randomimport timeimport urllib2import readdress = raw_input ("Please input the website address") count = Int (raw_input ("Please input the Add count number") req = Urllib2. Request (address) Res_data = Urllib2.urlopen (req) res =

Transferred from: http://blog.csdn.net/sruru/article/details/7790436Previously did not deeply consider the difference between the raw_input and the input function, so has been more confused, today after testing, have a more in-depth understanding,

if __name__==‘__main__‘:用法：When we run the module file at the command line , the Python interpreter places a special variable __name__ __main__ , and if the module is imported elsewhere hello , the if judgment will fail, so this if Testing allows a

1. Install Pythonhttps://www.python.org/2, install setuptools(Python's basic Package tool):https://pypi.python.org/pypi/setuptoolsDownload ez_setup.py fileOpen cmd, go to the directory where the ez_setup.py file is stored, execute the python

Unit testing can help us locate the module and the unit that is having problems accurately and quickly.The object of the unit test is a function, which must have the output (even if it is an abnormal output) so that the unit test module can capture

Further explore the use of Python decorators, explore python decorations Decorator is widely used in python. If you have used some python web frameworks, you must be familiar with the route () decorator, let's look at a specific case today. To

Measure the time consumed by functions in Python. This example describes how to count the time consumed by functions in Python. Share it with you for your reference. The specific implementation method is as follows: Import timedef time_me (fn):

Brief tutorial on installing external-python, external-python Compile is required to write a python script. However, because the development-python package does not provide setup. py, you cannot directly install it through pip. You only need to

Leetcode-solving Median of Two sorted arrays, leetcodemedian Question: there are two sorted arrays nums1 and nums2 of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity shoshould be O (log (m + n

Python lambda and def usage comparison Example Analysis, pythonlambda This article compares and analyzes the usage of lambda and def in python. Share it with you for your reference. The specific analysis is as follows: 1. lambda is used to create

Python obtains the current date and time. python obtains the current date. This example describes how to obtain the current date and time in python. Share it with you for your reference. The details are as follows: Import datetime # Get a datetime

Python Bottle framework to implement the most basic get and post methods, pythonbottle 1. GET method: #-*-Coding: UTF-8 -*-#! /Usr/bin/python # filename: GETPOST_test.py # codedtime: 2014-9-20 19: 07: 04 import bottledef check_login (username,

Simple Method to connect the Bottle framework of MySQL and Python, pythonbottle Python has many connection plug-ins for mySQL, and some plug-ins are specially developed under Bottle: For details about how to use bottle-mysql, see the official

Use Python to write a script to extract Chinese characters from logs, Because the work needs to extract some fixed characters from a large number of logs, if you rely solely on manual extraction, a large amount of data, labor-intensive, so naturally

The method for returning static files and JSON objects in the Python Bottle framework, The Code is as follows: #-*-Coding: UTF-8 -*-#! /Usr/bin/python # filename: todo. py # codedtime: 2014-8-28 20: 50: 44 import sqlite3import bottle @ bottle. route