Difference between revisions of "Python for Data Science"

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~ Migrated
<br />
 
For a standard Python tutorial go to [[Python]]
 
 
 
 
 
<br />
 
==Courses==
 
*Udemy - Python for Data Science and Machine Learning Bootcamp
 
 
 
:https://www.udemy.com/course/python-for-data-science-and-machine-learning-bootcamp/
 
 
 
 
 
<br />
 
==Anaconda==
 
Anaconda is a free and open source distribution of the Python and R programming languages for data science and machine learning related applications (large-scale data processing, predictive analytics, scientific computing), that aims to simplify package management and deployment. Package versions are managed by the package management system conda. https://en.wikipedia.org/wiki/Anaconda_(Python_distribution)
 
 
 
En otras palabras, Anaconda puede ser visto como un paquete (a distribution) que incluye no solo Python (or R) but many libraries that are used in Data Science, as well as its own virtual environment system. It's an "all-in-one" install that is extremely popular in data science and Machine Learning.Creating sample array for the following examples:
 
 
 
 
 
<br />
 
===Installation===
 
Installation from the official Anaconda Web site: https://docs.anaconda.com/anaconda/install/
 
 
 
 
 
https://linuxize.com/post/how-to-install-anaconda-on-ubuntu-18-04/
 
 
 
https://www.digitalocean.com/community/tutorials/how-to-install-the-anaconda-python-distribution-on-ubuntu-18-04
 
 
 
 
 
<br />
 
 
 
===Anaconda comes with a few IDE===
 
 
 
*Jupyter Lab
 
*Jupyter Notebook
 
*Spyder
 
*Qtconsole
 
*and others
 
 
 
 
 
<br />
 
===Anaconda Navigator===
 
Anaconda Navigator is a GUI that helps you to easily start important applications and manage the packages in your local Anaconda installation
 
 
 
You can open the Anaconda Navigator from the Terminal:
 
anaconda-navigator
 
 
 
 
 
<br />
 
 
 
==Jupyter==
 
Jupyter comes with Anaconda.
 
 
 
*It is a development environment (IDE) where we can write codes; but it also allows us to display images, and write down markdown notes.
 
 
 
*It is the most popular IDE in data science for exploring and analyzing data.
 
 
 
*Other famoues IDE for Python are Sublime Text and PyCharm.
 
 
 
*There is '''Jupyter Lab''' and '''Jupyter Notebook'''
 
 
 
 
 
<br />
 
===Customize Jupyter===
 
 
 
 
 
<br />
 
====Themes====
 
https://github.com/dunovank/jupyter-themes
 
 
 
 
 
jt  -t oceans16    -cellw 98%  -lineh 120  -fs 14  -nfs 14  -dfs 14  -ofs 14
 
 
 
 
 
https://www.kaggle.com/getting-started/97540
 
jt  -t monokai      -cellw 98%  -lineh 120  -fs 14  -nfs 14  -dfs 14  -ofs 14  -f fira  -nf ptsans  -N  -kl  -cursw 2  -cursc r  -T
 
 
 
 
 
<br />
 
====Extensions====
 
This post mention so nice extension and configuration that can be done: https://towardsdatascience.com/bringing-the-best-out-of-jupyter-notebooks-for-data-science-f0871519ca29
 
 
 
<br />
 
=====Unofficial Jupyter Notebook Extensions=====
 
https://jupyter-contrib-nbextensions.readthedocs.io/en/latest/index.html
 
 
 
<span style="color: green">'''This is very important. There are very nice extensions in this package:'''</span>
 
 
 
* toc2: https://jupyter-contrib-nbextensions.readthedocs.io/en/latest/nbextensions/toc2/README.html
 
* Collapsible Headings
 
* ... etc
 
 
 
 
 
 
 
<br />
 
======Installation======
 
https://jupyter-contrib-nbextensions.readthedocs.io/en/latest/install.html
 
 
 
<span style="color: red">'''I had some issues to install it. La format indicada por defecto:'''</span>
 
 
 
pip install jupyter_contrib_nbextensions
 
jupyter contrib nbextension install --user
 
 
 
<span style="color: red">'''A través de la forma anterior no pude instalar el paquete de forma correcta. La instalación no retornó errorres, y la extensión se mostraba en Jupyter-notebook pero no podía activar "enable" las extensiones.'''</span>
 
 
 
 
 
<span style="color: red">'''Al parecer es un problema con la ubicación de la instalación. Yo estaba usando conda pero conda está presentando problemas. La instalación de los paquestes demora muchísimo y luego el paquete parece no estar disponible.'''</span>
 
 
 
 
 
<span style="color: red">'''En el siguiente post encontré una forma de solucionar de instalar nbextension usando pip:'''</span>
 
https://github.com/ipython-contrib/jupyter_contrib_nbextensions/issues/1127
 
 
 
pip install --upgrade jupyter_contrib_nbextensions
 
jupyter contrib nbextension install  --sys-prefix  --symlink
 
 
 
 
 
<span style="color: red">'''«--symlink» creo que lo usé pero no estoy completamente seguro. También realicé el --upgrade pero creo que la diferencia la hicieron las opciones --sys-prefix  --symlink'''</span>
 
 
 
<br />
 
 
 
====CustomJS and CustonCSS files====
 
This is a good post: https://forums.fast.ai/t/jupyter-notebook-enhancements-tips-and-tricks/17064
 
 
 
Keyboard Shortcut Customization: https://jupyter-notebook.readthedocs.io/en/stable/examples/Notebook/Custom%20Keyboard%20Shortcuts.html
 
 
 
 
 
<br />
 
custom.js
 
<syntaxhighlight lang="js">
 
// // Mis configuraciones
 
 
 
// This is to enable syntax highlighting for SQL code:
 
// https://stackoverflow.com/questions/43641362/adding-syntax-highlighting-to-jupyter-notebook-cell-magic
 
require(['notebook/js/codecell'], function(codecell) {
 
  codecell.CodeCell.options_default.highlight_modes['magic_text/x-mssql'] = {'reg':[/^%%sql/]} ;
 
  Jupyter.notebook.events.one('kernel_ready.Kernel', function(){
 
  Jupyter.notebook.get_cells().map(function(cell){
 
      if (cell.cell_type == 'code'){ cell.auto_highlight(); } }) ;
 
  });
 
});
 
 
 
 
 
// My plain theme
 
// This is a good post where I took some ideas to write the following fuction: https://forums.fast.ai/t/jupyter-notebook-enhancements-tips-and-tricks/17064
 
Jupyter.keyboard_manager.command_shortcuts.add_shortcut('Alt-Ctrl-Q', {
 
    help : '...',
 
    help_index : 'zz',
 
    handler : function (event) {
 
        var input_promp_fields = document.getElementsByClassName("prompt_container");
 
        var text_render_fields = document.getElementsByClassName("text_cell_render");
 
        var input_area_fields  = document.getElementsByClassName("input");
 
        var cell_fields        = document.getElementsByClassName("cell");
 
       
 
        if (input_promp_fields[0].style.visibility == "collapse"){
 
            action = "visible";
 
            input_marginLeft = "0px";
 
            border_top  = "3px";
 
            prompt_width = "74px";
 
            padding_top = "0px";
 
            output_margin = "40px";
 
        }else{
 
            action = "collapse";
 
            input_marginLeft = "74px";
 
            border_top  = '0px';
 
            prompt_width = "74px";
 
            padding_top = "40px";
 
            output_margin = "40px";
 
        }
 
       
 
        // Si queremos usar !important debemos hacerlo de esta forma utilizando JQuery:
 
        // https://makitweb.com/how-to-add-important-to-css-property-with-jquery/
 
        var text_cell_fields = document.getElementsByClassName("text_cell");
 
        $(text_cell_fields).ready(function(){
 
            $('.input_prompt').css({
 
                'cssText': `width: 40px !important; max-width: ${prompt_width} !important; min-width: ${prompt_width} !important;`
 
            });
 
        });
 
       
 
        $(document).ready(function(){
 
            $(".prompt_container").css(
 
                'visibility', `${action}`
 
            );
 
           
 
            $(".input").css(
 
                'padding-left', `${input_marginLeft}`
 
            );
 
           
 
            $(".output_subarea").css(
 
                'margin-left', `${output_margin}`
 
            );
 
                       
 
            $('.cell').css({
 
                'cssText': `border-top-width: ${border_top} !important; border-bottom-width: ${border_top} !important;`
 
            });
 
           
 
            $(".collapsible_headings_ellipsis").css({
 
                'cssText': `padding-top:${padding_top} !important; border-top-width: ${border_top} !important; border-bottom-width: ${border_top} !important;`
 
            });
 
           
 
        });
 
       
 
        $(document).ready(function(){
 
            $('h1').css({
 
                'cssText': `color: #388bfd !important; font-weight: bold !important`
 
            });
 
        });
 
       
 
        // Esta es la forma estandard de hacerlo con puro JavaScript
 
        for (i = 0; i < input_promp_fields.length; i++) {
 
            text_render_fields[i].style.marginLeft = '-10px';
 
            // input_promp_fields[i].style.visibility = action;
 
            // input_area_fields[i].style.paddingLeft  = input_marginLeft;
 
        }
 
        return false;
 
    }}
 
);
 
 
 
 
 
// This could be very usefull. It allows to add text automatically into a cell
 
// https://forums.fast.ai/t/jupyter-notebook-enhancements-tips-and-tricks/17064/27
 
Jupyter.keyboard_manager.edit_shortcuts.add_shortcut('Ctrl-Shift-J', {
 
    help : '...',
 
    help_index : 'zz',
 
    handler : function (event) {
 
        document.body.style.background = 'blue'
 
        var target = Jupyter.notebook.get_selected_cell()
 
        var cursor = target.code_mirror.getCursor()
 
        var before = target.get_pre_cursor()
 
        var after = target.get_post_cursor()
 
        target.set_text(before + 'from IPython.core.display import display, HTML; \n\taverrrdisplay(HTML("<style>.container { width:98% !important;}</style>"))' + after)
 
        cursor.ch += 20 // where to put your cursor
 
        target.code_mirror.setCursor(cursor)
 
        return false;
 
    }}
 
);
 
 
 
 
 
// To get the real value of a css field: https://stackoverflow.com/questions/26074476/document-body-style-backgroundcolor-doesnt-work-with-external-css-style-sheet
 
// window.getComputedStyle(document.body).backgroundColor
 
// window.getComputedStyle(document.getElementsByClassName("input_area")[0]).backgroundColor
 
</syntaxhighlight>
 
 
 
 
 
<br />
 
custom.css
 
<syntaxhighlight lang="css">
 
/*  Mis configuraciones  */
 
 
 
.container { width:98% !important; }
 
/* document.getElementById("notebook-container").style.minWidth = "50%"; */
 
/* document.getElementById("notebook-container").style.maxWidth = "50%"; */
 
 
 
#notebook-container {
 
width:98% !important;
 
}
 
 
 
.CodeMirror-gutters {
 
background-color: transparent !important;
 
background: transparent !important;
 
}
 
 
 
.CodeMirror-linenumber {
 
margin-left: -20px !important;
 
}
 
 
 
.output_subarea {
 
margin-left: 40px !important;
 
}
 
 
 
#toc .fa-fw {
 
color: blue !important;
 
}
 
 
 
#toc .highlight_on_scroll {
 
margin-left: -4px !important;
 
 
}
 
 
 
#toc {
 
padding-left: 10px !important;
 
}
 
 
 
/*  I have also changed the color
 
/*  #a6e22e  by  #388bfd
 
*  in the entire custom.css
 
*/
 
 
 
/* I have also chenged some of the properties of the toc directly above in the code:
 
 
 
#toc-wrapper {
 
z-index: 90;
 
position: fixed !important;
 
display: flex;
 
flex-direction: column;
 
overflow: hidden;
 
padding: 10px;
 
padding-top: 40px !important;
 
border-style: solid;
 
border-width: thin;
 
border-right-width: medium !important;
 
background-color: #1e1e1e !important;
 
}
 
#toc-wrapper.ui-draggable.ui-resizable.sidebar-wrapper {
 
border-color: rgba(93,92,82,.25) !important;
 
}
 
#toc a,
 
#navigate_menu a,
 
.toc {
 
color: #f8f8f0 !important;
 
font-size: 16pt !important;
 
}
 
#toc li > span:hover {
 
background-color: rgba(93,92,82,.25) !important;
 
}
 
#toc a:hover,
 
#navigate_menu a:hover,
 
.toc {
 
color: #DAA520 !important;
 
font-size: 16pt !important;
 
}
 
#toc-wrapper .toc-item-num {
 
color: #388bfd !important;
 
font-size: 16pt !important;
 
}
 
*/
 
</syntaxhighlight>
 
 
 
 
 
<br />
 
 
 
===Online Jupyter===
 
There are many sites that provides solutions to run your Jupyter Notebook in the cloud: https://www.dataschool.io/cloud-services-for-jupyter-notebook/
 
 
 
I have tried:
 
 
 
*https://cocalc.com/app
 
 
 
::https://cocalc.com/projects/595bf475-61a7-47fa-af69-ba804c3f23f9/files/?session=default
 
::Parece bueno, pero tiene opciones que no son gratis
 
 
 
 
 
*https://www.kaggle.com/
 
 
 
::https://www.kaggle.com/adeloaleman/kernel1917a91630/edit
 
::Parece bueno pero no encontré la forma adicionar una TOC
 
 
 
 
 
*https://drive.google.com
 
 
 
:*https://colab.research.google.com
 
::Es el que estoy utilizando ahora
 
 
 
 
 
<br />
 
===Some remarks===
 
 
 
 
 
<br />
 
====Executing Terminal Commands in Jupyter Notebooks====
 
https://support.anaconda.com/hc/en-us/articles/360023858254-Executing-Terminal-Commands-in-Jupyter-Notebooks
 
 
 
If we are in the Notebook, and we want to run a shell command rather than a notebook command we use the <code>'''!'''</code>
 
 
 
Try, for example:
 
!ls or
 
!pwd
 
 
 
It's the same as if you opened up a terminal and typed it without the <code>'''!'''</code>
 
 
 
 
 
<br />
 
===[[HTML presentation with Reveal.js#Creating Presentations in Jupyter Notebook with RevealJS|Creating Presentations in Jupyter Notebook with RevealJS]]===
 
 
 
 
 
<br />
 
 
 
==Some of the most popular Python Data Science Libraries==
 
 
 
*NumPy
 
*SciPy
 
*Pandas
 
*Seaborn
 
*SciKit'Learn
 
*MatplotLib
 
*Plotly
 
*PySpartk
 
 
 
 
 
<br />
 
 
 
==[[NumPy and Pandas]]==
 
 
 
 
 
<br />
 
==[[Data Visualization with Python]]==
 
 
 
 
 
<br />
 
 
 
==[[Natural Language Processing]]==
 
 
 
 
 
<br />
 
==[[Dash - Plotly]]==
 
 
 
 
 
<br />
 
==[[Scrapy]]==
 
 
 
 
 
<br />
 

Latest revision as of 11:33, 28 February 2026

~ Migrated