treehouse full stack

Python full stack Road series of tuple data typesThe only difference between a tuple and a list is that the list can be changed, tuples cannot be changed, and other functions are the same as lists Two ways to create tuplesFirst Kindages = (11, 22, 33, 44, 55)The second Kindages = tuple ((11, 22, 33, 44, 55))If there is only one element in the meta-ancestor, then a comma is required, otherwise it becom

Today, I am bored. The full-stack multi-screen engineers are not doing well due to various technologies and problems.Comments: Full-stack multi-screen engineers are not doing well.Today is the most annoying day for writing code recently.1. failed to send text messages to company projects.One of the platforms could not

Testimonials: Full stack multi-screen engineer not good to do AHToday, is the most annoying day to write code, ah, encountered a variety of problems.1. The company project, texting is not successful. One of the platforms of the SMS send is not successful, this really can't blame me.One is because the HTTP SMS interface API address is not correct, 404.Instead, because of the WebService interface, there is no

The recursion of the Python full stack Road seriesThe so-called recursion is actually the function itself that calls the function until a layer exits after the specified condition is met, for exampleOnce there was a mountain, there is a temple in the mountain, there is an old monk in the temple, is telling a story to the Little monk! What is the story? "There used to be a mountain, a temple in the mountains

Here I strongly recommend the company developers to research HTML5 full stack development technology, and for the development of app software. Why? According to the truth, HTML5 is not widely used now, do not need to be too valued. However, this is not the case, HTML5 has a lot of development advantages, it represents the future of app development trends, the use of HTML5 development app more promising.One:

The difference between Python full stack--6.1-match-search-findall-group (s) and the calculator instanceMatch, search, FindAll, group (s) differences12345Import re# match FindAll often use# Re.match () #从开头匹配, no match to object returns none# Re.search () #浏览全部字符, matches the first rule-compliant string# Re.findall () # Place everything that matches to a listThere are two kinds of match.-------have a groupi

Overview This project is based on the SSM Framework Technology Java Web Project, is a full stack project, involving front-end, back-end, plug-in, on-line deployment, and other sections, the project all the code is self-coding, each step, the parts have clear comments, do not worry about code confusion, can be easy, simple, Complete learning with confidence (and no versioning configuration required). I will

I have been following the video self-study for several days Python full stack development, today decided to listen to the teacher, began to write a blog, heard that the great God has come back to write a blog to record their growth. I particularly seriously follow this video to learn, (they start before the guarantee, I also wrote a copy, hahaha ...) I am now a quasi-college student, ready to learn programm

-like programming language [1], Big data developmentErlang = is a generic, concurrency-oriented programming language that is programmed by the Swedish telecommunications equipment manufacturer Ericsson, a functional typeThe Go ===go language is the second open source programming language released by Google 2009. The go language is optimized for programming multi-processor system applications, with go-compiled programs that are comparable to C or C + + code, and are more secure and support parall

python full Stack development-day2 Boolean Process Control loopA, Boolean1. Overview#布尔值, a true one false #计算机俗称电脑, that is, when we write a program to let the computer running, it should be to let the computers infinitely close to the human brain, or what the human brain can do, the computer should be able to do,The main function of the human brain is data operation and logical operation, where the Boolea

This article mainly introduces the most popular Node. introduction to js concise and full-stack development frameworks, this article explains Express. js, KOA, Total. js, Sails. js, Meteor, Mean. i/O and other frameworks. For more information, see Rapid development, easy scalability, high performance, and robust robustness. The emergence of Node. js makes these dreams of all network application developers

Preface:I haven't written a blog post for a long time, and I have been researching and practicing agile for more than three years. So I have some insights and hope to share them with you.I had a little controversy with a friend about the relationship between full-stack development and agility the day before yesterday. Now I will post my point of view to my blog post and hope to see some suggestions and sugg

, Revel automatically compiles code and templates, and if the code compiles incorrectly, it gives an error and captures the run-time error. Full stack Features: Revel support: Routing, parameter resolution, validation, Session/flash, templates, caching, scheduled tasks, testing, internationalization and other functions. High performance: Revel is built on Go HTTP server. This is the latest evaluation

. Delete a table#按道理来说, a department in the department table was deleted, and the associated records for the employee table were deleted successively.However, after you delete the records for the employee table, delete the current department without any problemsThe above Delete table record operation is more cumbersome, according to the truth, cut off a department, the staff of the department will be cut off. In fact, there is a very important element in the construction of the table,Call sync D

Full-stack python development-Day8 function basics, python-day8Full-stack python development-Day8 function basics I. Introduction 1. Why do we need to use functions instead of functions? #1. The code's organizational structure is not clear and its readability is poor #2. When repeated functions are encountered, you can only write implementation code repeatedly. C

board hardware belongs to rewritable read-only memory required at specific voltages and conditions to overwrite the data should not be lost after the BIOS is powered downaverage seek time delay timeThe time at which the head moves from one cylinder to the nearest cylinder is called the seek time delay, which is called the delay time when the head reaches the exact position and the sector of the data that is waiting to be rotated.virtual memory and MMU tape device driverVirtual memory is the vir

display, read the system disk configuration file;4. Read into bootloader start the loading module and start the operating System.5, the system asks the BIOS obtains the configuration information, checks whether the device driver exists, does not exist prompts the user to Install. The presence is stored in the Kernel.14. Application Start-up ProcessExternal mouse through the controller pass the operating system move cursor operation double-click Desktop shortcut;Shortcut through the operating sy

functionFunctional programming: As much as possible to write a sequence of nested function callsfunction is the basic unit of process-oriented program designFirst-class citizens: Functional status and data variables, variable objects initialize values, do parametersParameters unchanged, one execution = = multiple executions==============================================def custom Function Def hi (): ... return..Lambda anonymous function Fn=lamda x:x**2 (square)function.partial function Encapsula

Qq_name _dic:continue while true:msg = input (' Please input message, enter send: '). Strip () If msg== ' quit ': Break if not MSG or n OT qq_name or Qq_name not in Qq_name_dic:continue udp_client.sendto (Msg.encode (' Utf-8 '), Qq_name_dic[qq_name]) BACK_MSG,ADDR = Udp_client.recvfrom (1024) Print (' A message from [%s:%s]: \033[41m%s\033[0m '% (Addr[0],addr[1],back_msg.decode (' Utf-8 ')) Udp_client.close () Run resultsV. subprocess Sub-process moduleThe import Subprocess#popen m