anaconda python 3 6

= ', 3//2.0) Python 3.4.1 3/2 = 1.5 3//2 = 1 3/2.0 = 1.5 3//2.0 = 1.0 6, Xrange In Python 2.x, a xrange () is often used to create an iter

= ', 3//2.0) Python 3.4.1 3/2 = 1.5 3//2 = 1 3/2.0 = 1.5 3//2.0 = 1.0 6, Xrange In Python 2.x, a xrange () is often used to create an iter

[Python journey] Article 6 (v): producer and consumer models implement multi-thread asynchronous InteractionAlthough the title is "producer-consumer model achieves multi-thread asynchronous interaction", this should also include the Python message queue, because the multi-thread asynchronous interaction is implemented through the

comes with a pip3,python2.7 that comes with a PIP, provided the PIP3 (scripts directory) is added to the environment variable.PIP3 Install a module for installation xxxPIP List view installed modulesPip Uninstall XXX module uninstalledSecond installation method, manual installation:First download the installation package, direct Baidu search for example, Python requests moduleUnpacking the installation packageExecute

numbers, over 100 of the time, to stop the program. The range of the random number 1-20 is generated, requiring the recording of the resulting random number, as well as the last and the number of random numbers.Mode 1:import randomresult =0random_num_list =[]while 1: random_num = random.randint(1,20) random_num_list.append(random_num ) result+=random_num if result >100: breakprint("一共产生了 %s 个随机数：" %len(random_num_list))print("产生随机数如下：",random_num_list)print("最后的随机数之和：",result

condition 1: 2 EXECUTE statement 1 ... 3 elif Judging condition 2: 4 EXECUTE statement 2 ... 5 elif Judging condition 3: 6 EXECUTE statement 3 ... 7 Else : 8 Execute Statement 4 ...Examples are as follows:1 #! /user/bin/env Ptyhon2 #-*-coding:utf-8-*-3 #Auth

-ins very convenient) 2.Anaconda (This is a Python auto completion and syntax hint plugin, and provides " jump to the function defined " 3.AutoFileName (plug-ins for auto-complete file paths) ... Other plugins, I will not list the introduction. I almost forgot, I haven't told you how the package control is installed. The way to install the package Control is s

instantiated, each instance has a separate variable.#测试类变量和实例变量Class Test (object):num_of_instance = 0 #类变量def __init__ (self, name):Self.name = NameTest.num_of_instance + = 1if __name__ = = ' __main__ ':Print (test.num_of_instance)T1 = Test (' Jack ')Print (test.num_of_instance)T2 = Test (' Lucy ')Print (T1.name, t1.num_of_instance)Print (T2.name, t2.num_of_instance) results as follows: 01jack 2lucy 2v. Add:1, "As long as the object, there must be a category, as long as the object, there must

called, releasing the allocated memory unit immediately at the end of the call. Therefore, the formal parameter is only valid inside the function. Function call ends when you return to the keynote function, you can no longer use the shape parametricarguments can be constants, variables, expressions, functions, and so on, regardless of the type of argument, and when a function call is made, they must have a definite value in order to pass these values to the parameter. It is therefore necessary

'? ' are greedy, but this may not be what we say, so, you can add a question mark in the back, change the strategy to non-greedy, only match as few re. ExampleRealize the difference between the two: The role of R in regular matching>>> Re.findall (r "\bi", "I Love U") [' I '] >>> re.findall (r "\bil", "Ilove u") [' Il ']Ii. various methods of the RE module 1, findall (gets all the matching strings in the string)FindAll (), you can return the matching results as a list, and if they d

many places in the program, once you want to modify the code, it is a nightmare, you need to change a lot of places. The Python language provides a number of built-in functions, as well as more functions that are provided through the module, which can be used to a large extent for code reuse, for example, the ABS function for obtaining the absolute value of a number, rounding the round function floating-point numbers, The sin function of the Cmath mo

the state of execution, and with this, writing a generator can implement functionality that requires an object-oriented implementation. For example, use an object to save the state, so write:var fib = { a: 0, b: 1, n: 0, max: 5, next: function () { var r = this.a, t = this.a + this.b; this.a = this.b; this.b = t; if (this.n this.max) { this.n ++; return r; } else { return undefined; } }};It is quite tedious to use the properties of the object to save the state.Another great benefit

6 Easy Steps to learn Naive Bayes algorithm (with code in Python) IntroductionHere's a situation you ' ve got into:You is working on a classification problem and you have generated your set of hypothesis, created features and discussed The importance of variables. Within an hour, stakeholders want to see the first cut of the model.What'll do? You are hunderds of thousands of data points and quite a few vari

Python Learning Series (6) (module) I. Basic Introduction of modules 1. import other standard modules Standard Library: the module in the Python Standard installation package. Several Methods for introducing modules: I) import module: import moduleName Ii) Introduce functions in the module: from moduleName import function1, function2 ,...... Iii) Introduce all fu

line.3, the main setting of Pycharm1) Create a project2) Create Python file3) automatically joins the header file, such as automatically set the path and UTF-8 encoding in LinuxFile-->settings...-->editor-->file and Code Templates-->python scriptsIn the box above, type:#!/usr/bin/env python#-*-coding:utf-8-*-4) Adjust

is 0'); returnx+y;Try: Print('Run 1'); A= Add (); Print(a); Print('Run 2'); b= Add (1, 0); Print(b); # There is no printing here because the last line is an exception exceptzerodivisionerror as data:Print(data);Use of ASSERT statements: Assert statements can also throw exceptions, but unlike raise, an Assert statement throws an exception when the condition test is false.Assert Example of an Assert: #!/usr/bin/pythonImportTracebackdefAdd (x, y):assertX! = 0 andY! = 0,'x or y is 0'; returnx+y;