Python

You can use doctest and unittest to perform unit tests in python. 1.doc test usage (1) The Write Program is as follows (cubetest. py ): #!/usr/bin/pythondef cube(x):"""cube a number and return the result>>> cube(2)8>>> cube(3)27>>>

Environment: Win7 + python 2.7.6 Import imageim1_image.open('3.png ') im. show () Display result: Always show loading, cannot open, or the display content does not exist. Double-click the image to display it normally. Solution: (X: the python

8.5 logs The Logging module provides a comprehensive and flexible log system. The simplest form is to send log information to a file or sys. stderr; Import logging Logging. debug ('destgging information ') Logging.info ('ionional message ') Logging.

Simple 'Hello World! ' Python command line If you have installed Python, enter the following command in the Linux Command Line: Copy codeThe Code is as follows:$ Python Directly go to python. Then, at the command line prompt >>>, enter: Copy codeThe

In the previous API test with httplib of Python 2.7, the running code is normal, After using Python 3.3 recently, I checked the previous Code and found that the import httplib has an error: Unresolved import: httplib, When running the code, the

Preface to capturing novels using PythonThis script is written to capture novels on MAC. You can use a few pieces of Python code. Code # Coding = utf-8import reimport urllib2import chardetimport sysfrom bs4 import BeautifulSoupimport codecsclass

Description of the range Function: range ([start,] stop [, step]) generates a Sequence Based on the range specified by start and stop and the step size set by step.Range example:Copy codeThe Code is as follows: >>> range (5)[0, 1, 2, 3, 4]>>> Range (

This article corresponds to exercise 39 dictionaries and cute dictionaries. # Encoding: UTF-8 # differences between the list and dictionary # list thing = ['name', 1, 'age', 'ad ', 'sex'] print thing [1] # print thing ['name'] # An error is

Get a worksheet table = data.sheets()[0] table = data.sheet_by_index(0) table = data.sheet_by_name(u)Get the value of the whole row and the whole column (returned array)Obtain the number of rows and columns6. Get CellsWhen I used it

Form request, post, get First, let's take a look at the Request object, which contains some useful information. It is no stranger to anyone who has learned B/S development, let's take a look at how Django is implemented: Attribute/Method

A lot of code has recently shared this question. The question is about object-oriented or functional programming. The following is an example of PYTHON implementation. Copy codeThe Code is as follows:#! /Usr/bin/python# Encoding: utf8 '''The Game of

I encountered Encoding Problems in the python code I wrote: SyntaxError: Non-ASCII character '\ xd3' in file crawler. py Cause: the Code contains a part that needs to output Chinese characters, but this error occurs during running; Error prompted

1. output with commas Print to print the expression-whether it is a string or a string of other types after automatic conversion. It is also feasible to print multiple expressions, as long as they are separated by commas: >>> ,4242 >>> 1,2,31, 2, 3>

1. view the current Python version Python-V 2. view the current CentOS version. Cat/etc/redhat-release 3. Install all Development Kits Yum groupinstall 4. install other required packages Yum install zlib-devel bzip2-devel openssl-devel

Stores strings separated by commas in a field and returns a corresponding list. Copy codeThe Code is as follows:From django import formsFrom django. db import modelsFrom django. utils. text import capfirstFrom django. core import exceptions Class

1. Start with Kmeans Kmeans is a very basic clustering algorithm that uses the idea of iteration. We will not talk about its principles here. The following describes how to use the kmeans Algorithm in matlab. Create seven two-dimensional data points:

1. What is Numpy? Numpy is a Python scientific computing library that provides matrix computing functions. It is generally used with Scipy and matplotlib. In fact, list already provides a representation similar to a matrix, but numpy provides more

Because I want to use Python to implement a distributed system to manage and monitor the content and running status of CDN, I accidentally met RabbitMQ and many people are recommended, for example, why do I choose RabbitMQ. It took me several hours

A function with yield is a generator, which is different from a common function. Generating a generator looks like a function call, but does not execute any function code until it calls next () (next () is automatically called in the for loop to

tkinter version = app_title = + listdir = isdir = isfile = path_join = i i = (self, *visitors, terminate =