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        <dc:date>2022-06-10T09:27:58+00:00</dc:date>
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        <title>think python</title>
        <link>https://miguelangel.torresegea.es/wiki/development:python:thinkpython?rev=1654853278&amp;do=diff</link>
        <description>think python

python

cadenas

	*  inmutables
	*  &lt;string&gt;[char]
		*  -1 : last
		*  -2 : pre-last

	*  &lt;string&gt;[pos1:pos2]
	*  &lt;string&gt;[:pos2], &lt;string&gt;[pos2:],&lt;string&gt;[-pos2:]
	*  &lt;string&gt;.capitalize()
	*  &lt;string&gt;.isupper()
	*  list(cadena) : separa en caracteres</description>
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        <dc:date>2025-09-26T08:05:20+00:00</dc:date>
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        <title>Python argparse</title>
        <link>https://miguelangel.torresegea.es/wiki/development:python:argparse?rev=1758873920&amp;do=diff</link>
        <description>Python argparse

	*  &lt;https://ellibrodepython.com/python-argparse&gt;

argparse

	*  o = argparse.ArgumentParser:
		*  description: se muestra en la ayuda del programa
		*  prefix_chars: cambia el prefijo de los argumentos
		*  fromfile_prefix_chars: establece el prefijo para importar un archivo que contiene los argumentos</description>
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        <dc:date>2025-10-09T12:14:38+00:00</dc:date>
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        <title>Python: Entornos virtuales</title>
        <link>https://miguelangel.torresegea.es/wiki/development:python:entornos-virtuales?rev=1760012078&amp;do=diff</link>
        <description>Python: Entornos virtuales

python

	*  venv
	*  virtualenv
	*  pyenv

Una combinación de pyenv (para gestión de versiones de python) y virtualenv (para encapsular librerias por proyecto) parace una buena solución

virtualenv


python3 -m pip install --upgrade pip
pip3 install virtualenv

which virtualenv
virtualenv -p /home/username/opt/python-3.10.1/bin/python3 venv # crea venv

pip3 install --upgrade setuptools # si error setuptools pip failed with error code 1` error

source venv/bin/activat…</description>
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        <dc:date>2024-03-12T13:26:04+00:00</dc:date>
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        <title>Python librerias</title>
        <link>https://miguelangel.torresegea.es/wiki/development:python:from?rev=1710249964&amp;do=diff</link>
        <description>Python librerias

python

collections

from collections import defaultdict
var = defaultdict(int)
var2 = defautldict(set)

	*  todos los elementos seteados a 0 o vacío por defecto

pickle

	*  serialización de objetos
	*  from pickle import TRUE! -&gt; ?

trace</description>
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        <title>Python iterables</title>
        <link>https://miguelangel.torresegea.es/wiki/development:python:iterables?rev=1759134237&amp;do=diff</link>
        <description>Python iterables

python

	*  &lt;https://kinsta.com/es/blog/iterables-de-python/&gt;
	*  &lt;https://ellibrodepython.com/iterator-python&gt;

iterables

even_list = [2, 4, 6, 8, 10]
my_iterator = iter(even_list)
print(next(my_iterator)) # Prints 2
print(next(my_iterator)) # Prints 4
print(next(my_iterator)) # Prints 6


funciones sobre iterables

	*  sum — Devuelve la suma de un iterable dado, siempre que la colección sea de tipos numéricos (enteros, valores de coma flotante y números complejos)</description>
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        <dc:date>2024-10-10T14:14:17+00:00</dc:date>
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        <title>Python Pandas</title>
        <link>https://miguelangel.torresegea.es/wiki/development:python:pandas?rev=1728569657&amp;do=diff</link>
        <description>Python Pandas

	*  
pip3 install pandas

	*  soporte para excel: 
pip3.9 install openpyxl # needed to load Excel .xlsx files
pip3.9 install xlrd # needed to load Excel old .xls files)



	*  Estilos: &lt;https://docs.bokeh.org/en/latest/docs/user_guide/styling/plots.html#ug-styling-plots&gt;
	*  datos: &lt;https://pythonhow.com/media/data/supermarkets.json&gt;

varios

importar en dataframe

	*  pandas.read_csv(&#039;data.txt&#039;,header=None)</description>
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