B efore we get to the tutorial, let us understand the history and the reason for the development of the chat apps. Chat applications have been here for quite a long time, be it the ancient yahoo chat rooms or the advanced and modern chat applications such as WhatsApp, Facebook messenger, and Snapchat. In the early s, Quantum Link or Q-Link was introduced by Commodore which was an online service that enabled people to chat simultaneously along with playing games and sharing files.
It further changed its name to AOL in the year andit launched the AOL instant messenger which proved to be a huge success. The most famous chat application came in the late s which is known as Blackberry Messenger and it revolutionized the world of modern chat applications. The main reason for the development of the chat applications was the growth it provided for the marketing and purchase channels.
A perfect representation of mobile communication are messengers or chat apps. Now, in this tutorial, we are going to build a real-time chat app using sockets in python.
For this purpose, first, we need to understand what sockets are. Sockets are mainly used in the client-server based application. If there are two processes or two systems that want to communicate with each other, a socket provides an ending point of that communication. It is usually identified by an IP address associated with a port number.
In a client-server system. For the communication between the client and the server, a connection needs to be established; which is performed by a socket.
The servers listen to a particular port and wait for the request from the client. The connection request by the client socket is allowed by the server and hence, the connection is made. For instance, a telnet server listens to port number Let us consider a host with an IP address of Let the socket number for the host be Now, to establish the communication link between the server and the host, we will use the socket.
When a client wants to send a connection request, it is assigned a port number by the host computer. Here, is the port number assigned by the host computer, Moreover, the port number assigned should be greater than as all the port numbers below it are considered to be well known for the standard service and are used for client process. At the server end, the port number is 80, which is less than as it is used by some standard service.
The packets traveling from the client process to the server process are delivered appropriately based on the port number. In this tutorial, there are two separate python notebooks namely Server.
The socket library enables users to transfer information over the network. This standard library also provides the server module of the socket, which is a core part of the network servers. The sys library provides the system module which is responsible for providing data related to the system directory, functions, and methods. For further details, help sys command can be used.
The time module enables us to perform numerous actions about the conversions and descriptions of time.Simple Python Chat Server
It also provides various other methods such as timegmtimeasctimectime and sleep. This is being used for getting the socket. This function will be called a number of times in the following code. This command is used for obtaining the local device name which you are using. One thing to notice here is that to make sure that the port you are using to establish the connection is free on your localhost.
This command is used to bind the host and the port together.We encounter several chat applications everyday, it takes lot of effort to maintain and develop these as they involve two way communication between users and logging each and every request provided by the server. It just takes 7 minutes of your time and blimey! Prerequisites for this are few concepts bound with Flask, SocketIO and jquery.
These three form the bedrock in building one such chat app. If you want to dig more about it, just refer to this Flask article. It establishes a path through which one computer can interact with the other.
These must be included in templates folder. Run the application using the command:. This gives the output:. To receive WebSocket messages from the client, the application defines event handlers using the socketio.
The source code of main. Firstly, we need to include jquery and socket. To do that we need to import these scripts before writing our JS Functions.Analyze your WhatsApp chat in the form of interesting graphs.
A couple of weeks ago my wife and I started looking at our Whatsapp chat over the last year. I have been using Python for over 3 years now and thought of creating a very simple analyzer to provide me with some useful insights to our WhatsApp chat.
The resulting graphs were pretty interesting. To check out the online easy-to-use demo without going through the hassle of installing the repository and Python packages, please click below and follow the instructions.
It crawls the provided. This dataframe is then processed to plot the following contact-wise and time-wise statistics. An example of generates statistics can be seen below. It is advisable to make a new virtual environment with python 3. Step-by-Step details on creating a virtual environment can be found here. Once you have created the virtual environment, activate it, and use the following command to clone the repository.
Export the WhatsApp chat you like to analyze using the following steps.
How to build your own real-time chat app
AnalyzeTheChat is a python-baed WhatsApp chat analyzer that generates interesting bar graphs. It can be used to analyze the activity of a personal or a group chat to deduce useful results.
The online demo can be found here. Hands-on real-world examples, research, tutorials, and cutting-edge techniques delivered Monday to Thursday. Make learning your daily ritual. Take a look. Sign in. Aqeel Anwar Follow. How to Install AnalyzeTheChat? Step-by-Step details on creating a virtual environment can be found here 1.From texting your loved ones, sending memes and professional usage, Whatsapp has been dominating the messenger market worldwide with 1.
When it comes to complex NLP modelling, free text is black gold. NLP for businesses provide enhanced user experience ranging from spell-checks, feedback analysis and even virtual assistants. In certain situations, small businesses may create Whatsapp chat groups to relay information between members as a low-cost alternative to setting up systems to log data. Rule-based chat system on how the information is to be disseminated is agreed at the start of the chat.
Consider the following example:.
Build a simple real-life chat app with Python
With a simple system but prone to human spelling error like this, we can analyze sales pattern of different products and different locations with the use of Whatsapp. There are many great resources online to convert Whatsapp data into a pandas dataframe. However, my objective here is to target Python users who are beginners in string manipulation. For beginners learning Python, we have better familiarity with basic Python methods that does not come from external libraries. In this article, we will be using a lot of the basic methods in processing Whatsapp data into a pandas dataframe.
Here is what we will be covering:. If exporting messages directly from your phone is not your jam, you can try the following method:.
Otherwise, the easiest way to extract Whatsapp. The first thing we want to do is to make sure we know the location of your text file. Once that is out of the way, we want to define a function to read your text file into a Python variable with the following method:. The above function converts our text file into a list of strings that allows us to make use of. But for now, there is some cleaning you need to do. Sometimes the data you extract may not be in perfect format due to multi-line texts.
Consider the following situation using the same salesperson example from above that is already converted into a list:. Ignoring everything else after the date, it is obvious that unwanted elements do not have date objects in them. We do this by utilizing basic error handling-technique. As you can see, we have removed about elements that may pose a hindrance to feature extraction later on. It is just within most of our casual texting culture to not use multi-line texts unless we are sharing links with caption with our buddies!
Now this is where you will be using your basic Python skills to extract features from the list that you will parse into a dataframe later on. First, we need to revisit the string pattern from the Whatsapp data. The first feature we would like to extract is the date. So we extract the element using the.
Another way you can write the above code without using range function is the following:. In contrast, this is what is required using the Regex method just to check whether the string pattern is date. With that out of the way, we may proceed with the same logic when extracting both the time and name of the sender. Take note of the following pattern:. Finally we want to extract the content of the message. This is a little bit tricky because certain lines do not contain any messages. Instead, they are system-generated messages depicted by the following:.
To put into perspective, consider the following. The element at index 2 is of interest to us.Messaging apps are surging in popularity. People seem to prefer chat-based applications because they allow for real-time interaction. They also add a personal touch to the experience. I recently attended a workshop conducted by the Free Software Movement Karnataka in Bangalore where I mentored a group of college students.
So we had to find a solution to break the ice between mentors and students. A local chat application came handy in this situation. People love to be anonymous, which gives them more power to express themselves and ask anytime anywhere. This is the same mantra used by most of the popular forums on the internet, such as Reddit and 4chan.
These are just a few giant examples of semi-anonymous apps. So I started thinking about this idea. I came up with some of the basic requirements and features. You can later integrate as a widget into any project! But it will help you build one. Install Node. Download the AngularJS library from here and copy it to the lib folder in Client directory. If you like to beautify the application you can download any CSS libraries and copy them to lib as well. This will start a new project.
Provide all the details required. The package. This will install required dependencies and add those to package. An extra field will be added to package. Create the index.
It defaults to connect to the host that serves the page. Final HTML looks something like this:. So whenever the message is typed and the button is clicked, call the function to send the message. You can design a database to save user details and messages. It would be good if the design was scalable so that you could add more features later. Suppose the member has rejected a chat request.
The sender can then send a chat request again. A user can also save the messages by creating an extra collection. Each document will have the message, sender, receiver, and time. For example, an endpoint that sends a home page, from which users can make other requests.VA West Virginia PITT Pittsburgh Matchup HOUST Houston STL Saint Louis Matchup PACIF Pacific WYOM Wyoming Matchup WISGB Wisconsin-Green Bay MIZZU Missouri Matchup APPST Appalachian State AKRON Akron Matchup UT.
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What to win and where. Winners - How much cash have you won. Free Tips Free Sports Tips Editors Recommended Picks Bookmakers Compare Bookmakers Bonus Bets Promotions Forum Home Register Now. Alex here, and I am back with my DraftKings NBA picks for December 9th, 2017. Are you looking to increase your chances of winning money betting on sports. Here at The Sports Geek our goal is to help you do just that. On our site, you will find sports betting tips and strategies, free sports betting picks, detailed sports betting site reviews, and lots more that will hopefully help you become a better sports better and increase your profits.
You can find our most recent sports betting picks listed below. We have a heavy 11-game slate on our hands tonight in what is set to be a beauty night of NHL action.
As per usual, Saturday night brings us a heavy slate of NHL action. Tonight we have an 11-game slate on our hands with another. Alabama Crimson Tide (7-2) at Arizona Wildcats (6-3) The Betting line information for this article was taken from sportsbetting. The Cleveland Cavaliers burned me last night, as they lost by four to the Pacers in Indiana.
Below we will give you a rundown on the most popular sections of our website that will help you with your sports betting, and our common goal of beating the bookies or making a profit with our betting. The most popular section of our sports betting site is the Sports Betting Picks page, which is updated daily with free picks. We are constantly reviewing the picks the team is putting out on a nightly basis to ensure we have only the highest quality information and picks being posted at The Sports Geek.
We have certain team members dedicated to each league so that they can keep their focus on just a few sports.Rigondeaux preview, pick Vasyl Lomachenko and Guillermo Rigondeaux will go toe-to-toe on Saturday night Rigondeaux gets 2nd chance to spoil Arum The enigmatic defensive wizard faces Vasyl Lomachenko in Saturday's junior lightweight title. New Orleans (Total)Dallas at NY Giants (Spread)Cincinnati vs.
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Philadelphia (Total)LA Chargers vs. Welcome to the Sports Betting Odds section of The Sports Geek. The most common type of sports betting odds used in North America are the American style odds which we explain below. There are a couple different versions of sports betting odds, but these American Odds are the most common odds used. Reading and understanding sports betting odds can bet a little confusing to beginners, so we have provided an example below using two NFL football teams:The number shown in the bracket represents the odds.
Complete Beginner’s Guide to Processing Whatsapp Data with Python
The American Odds have two components to them, the first being the positive or negative sign, and the second being the number that follows the sign. The sign in front of the number indicates whether placing a wager on that outcome will pay out more money then you have wagered or less money then you have wagered.
The next step is figuring out exactly how much the bet pays out, which is where the numbers in the odds come into play. Again this can easily be converted into smaller or larger size bets. The great thing about betting online is that the online sportsbooks will do the calculations for you before you place your bet. You can click on the outcome or team you would like to bet on, and then input the amount you wish to wager and it will show you your potential pay out before you confirm your bet.
Ready To Start Betting. You will also get a Free Money Bonus at each sportsbook if you follow either link above. Decimal style odds are used mostly in Europe, and are pretty easy to understand. To calculate the decimal style odds all you will need to do is simply multiply the amount you wish to wager by the decimal odds shown and you will get your payout. With that said, most online betting sites will allow you to chose the style of betting odds you want displayed, with American odds set as the default.
Click here to compare online betting sites so you can get started today. Below is an example of MLB betting odds taken from an online betting site. Decimal Style Sports Betting Odds Decimal style odds are used mostly in Europe, and are pretty easy to understand.
For example it may look something like this: USA (2. Tonight we have an 11-game slate on. NCAAM Basketball Pick for December 9th Alabama Crimson Tide (7-2) at Arizona Wildcats (6-3) The Betting line information for this article was taken from sportsbetting.
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Woods, 41, has not played a round of professional golf since February when he felt back spasms at the Dubai Desert Classic. In between times, the former world number one and winner of 14 major championships entered rehab for an addiction to prescription drugs.
Now Woods is on the comeback trail once again, at the invitational tournament he hosts, albeit with tempered expectations.