Interactive User Interface - Data Visualization GUIs with Dash and Python p.2

Welcome to part two of the Dash tutorial series for making interactive data visualization user interfaces with Python. In this tutorial, we're going to cover the user interface interactivity with an example of text input.

[daveperras]

I am quickly becoming your #1 fan. Thanks for all your great tutorials. I started my career as a software engineer in the late 80's but haven't coded much in the last 15 years. Just getting into Python and data science and you have made it like 'riding a bike' as they say. Thanks!! Dave from Granbury Texas

[arjunkirpal]

Would LOVE if you could integrate Asyncio with Dash! Raymond Hettinger said Asyncio is the future of Python. I understand with Asyncio Python can take Node.js head on. Particularly when using Asyncio with UVLOOP. Thank you for all your awesome tutorials! You are doing so much more for the world than the bureaucrats at UN, UNESCO etc !!

[spacecapitalism]

Wow, sentdex. You must read python documentation for breakfast, lunch, and dinner! I am so glad you married Python and got stopped cheating on it with Golang.

[alicemystery]

you make it fun to learn about python.

[devon]

definitely interesting. I'll have to read the docs on using this as a flask extension...seems like it would be very difficult to write a complicated UI in a .py file, but perhaps that's personal preference from using PHP. Also, I might change the value attribute to a placeholder to get rid of the instruction text

[JtotheAKOB]

Hey sentdex, i appreciate your tutorials! You have a great
way of explaining clearly but also entertaining and keeping up the focus
and interest!
I just have one request. I cant wrap (hehe) my mind around decorator
methods, in your example "at"app.callback(). I dont get how the
dcc.input is explicitly connected to input-data. I learned a lot through
your tutorial on pythonprogramming.net and another one but
unfortunately nothing about decorator methods like the one here. Maybe
in a side-line about decorator as classes, which i then obviously didnt
get^^ Would you help me? At least with some link :P

[sameeruddinmohammed]

Why are we not calling the update_value() function that we defined??

[YashRaj-ixdp]

hey sentdex in the code
we have not even called
update_value(input_data)
how is it working???, can you please explain the flow of code.

[AmDsusFmajAm]

Harrison, have you heard of the bokeh library? I found it yesterday, trying to use the financial part of matplotlib that has been deprecated. It's a lot like dash because the output images can be html, it can make some beautiful charts, and it doesn't require plotly. It integrates nicely with Jupyter notebooks as well. Cheers

[tarakpandya]

Hey sentdex, can you show example of dash connection with sql server? And if dash has ability to run Sql procedure on daily?

[ajayantony]

Hey sentdex, can we import a project done in jupyter with altire and implement in dash?

[Im_Ezic]

I have a really important question. I'm having a WinPython on USB stick because it's only one that works. Is there an option to install libraries such as tensor flow directly on usb stick and use them on any computer?

[iacaldrod]

Hi Harrison, good tutorial as always. I also tried Dash a few months ago, but I got stuck when trying to query a mysql database with the input generated from a dropdown list, in order to get data por plots. If you could please elaborate on that topic it would be so much appreciated.

[artaa]

Hi is it possible to use dash in another flask web? I need to integrate data science codes with powerful plotting tool on a web application or page is it possible to use dash or should I use plotly or something else?

[HandFedMole]

I think it would be useful to show the app.callback signature, unless I'm missing something.

Super psyched for this as an alternative to R Shiny. I do all my analysis in python and then create interactive data dashboards in R Shiny, which doesn't scale well at all with neither users nor data...

[twessels]

Does anyone have an example of how to use data already stored in a local CSV?

[AbhijeetWaghmare]

can you please tell me how can i fetch data from DB server so that data should reflect on Dash

[abhijitbanerjee]

I'm getting this error called "Callback error updating output.children", Can someone tell me why?

[tarkvitark]

great work again bro.. can you create a video on NLTK. broo please. i need it

[PallatiCharan]

Can anyone help me how do we create a login page for dash application.