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% Document Info
\author{Fide (fidelp27)}
\pdfinfo{
  /Title (python-collections-deque.pdf)
  /Creator (Cheatography)
  /Author (Fide (fidelp27))
  /Subject (Python -\textgreater{} Collections.deque() Cheat Sheet)
}

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    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{Python -\textgreater{} Collections.deque() Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{Fide (fidelp27)} via \textcolor{DarkBackground}{\uline{cheatography.com/175090/cs/36891/}}}
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  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}Fide (fidelp27) \\
  \uline{cheatography.com/fidelp27} \\
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  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Published 4th February, 2023.\\
   Updated 4th February, 2023.\\
   Page {\thepage} of \pageref{LastPage}.
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  Measure your website readability!\\
  www.readability-score.com
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\begin{document}
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\begin{multicols*}{2}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Qué es collections}}  \tn
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\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{collections es un módulo en Python que contiene una variedad de clases que ofrecen diferentes tipos de estructuras de datos útiles y eficientes} \tn 
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\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Qué es deque}}  \tn
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\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{deque es un tipo de datos en Python que representa una lista doblemente ligada. Esto significa que los elementos pueden ser agregados o eliminados tanto desde el principio como desde el final de la lista en tiempo constante} \tn 
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\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Métodos para agregar elementos}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{from collections import deque \newline  \newline d = deque() \newline  \newline  \newline \# Agregar elementos a la derecha (final) del deque \newline d.append(1) \newline d.append(2) \newline d.append(3) \newline print(d) \# deque({[}1, 2, 3{]}) \newline  \newline  \newline \# Agregar elementos a la izquierda (inicio) del deque \newline d.appendleft(0) \newline d.appendleft(-1) \newline d.appendleft(-2) \newline print(d) \# deque({[}-2, -1, 0, 1, 2, 3{]}) \newline  \newline  \newline \# Agregar varios elementos al final de la lista \newline d = deque({[}1, 2, 3{]}) \newline d.extend({[}4, 5, 6{]}) \newline print(d) \# deque({[}1, 2, 3, 4, 5, 6{]}) \newline  \newline  \newline \#Agregar varios elementos al inicio de la lista \newline d = deque({[}1, 2, 3{]}) \newline d.extendleft({[}4, 5, 6{]}) \newline print(d) \# deque({[}6, 5, 4, 3, 2, 1{]})} \tn 
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\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Más métodos...}}  \tn
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\mymulticolumn{1}{x{8.4cm}}{\#reverse invierte los elementos en el deque. \newline d = deque({[}1, 2, 3, 4, 5{]}) \newline d.reverse() \newline print(d) \# deque({[}5, 4, 3, 2, 1{]}) \newline  \newline \#maxlen: Establece un tamaño máximo para el deque. Si se supera, los elementos más antiguos se eliminan automáticamente. \newline d = deque({[}1, 2, 3, 4, 5{]}, maxlen=3) \newline print(d) \# deque({[}3, 4, 5{]}) \newline d.append(6) \newline print(d) \# deque({[}4, 5, 6{]})} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
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\begin{tabularx}{8.4cm}{X}
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\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{¿Cómo se usa?}}  \tn
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\mymulticolumn{1}{x{8.4cm}}{from collections import deque \newline d = deque()} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
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\par\addvspace{1.3em}

\begin{tabularx}{8.4cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Métodos para eliminar elementos}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{8.4cm}}{from collections import deque \newline  \newline d = deque({[}1, 2, 3, 4, 5{]}) \newline  \newline \# Eliminar un elemento desde el final del deque \newline popped\_element = d.pop() \newline print(popped\_element) \# 5 \newline print(d) \# deque({[}1, 2, 3, 4{]}) \newline  \newline \# Eliminar un elemento desde el principio del deque \newline popped\_element = d.popleft() \newline print(popped\_element) \# 1 \newline print(d) \# deque({[}2, 3, 4{]}) \newline  \newline \# Para eliminar todos los elementos del deque \newline d = deque({[}1, 2, 3{]}) \newline d.clear() \newline print(d) \# deque({[}{]}) \newline  \newline \#Eliminar la primera ocurrencia de un elemento especificado \newline d = deque({[}1, 2, 3, 4, 5, 4, 3, 2, 1{]}) \newline  \newline d.remove(3) \newline print(d) \# deque({[}1, 2, 4, 5, 4, 2, 1{]}) \newline  \newline \# Tratar de eliminar un elemento que no está en el deque \newline try: \newline     d.remove(6) \newline except ValueError as ve: \newline     print(ve) \# 'deque.remove(x): x not in deque'} \tn 
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\mymulticolumn{1}{x{8.4cm}}{\bf\textcolor{white}{Otro más...}}  \tn
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\mymulticolumn{1}{x{8.4cm}}{\#rotate() para rotar los elementos en la lista a la izquierda o a la derecha. \newline d = deque({[}1, 2, 3, 4, 5{]}) \newline d.rotate(2) \newline print(d) \# deque({[}4, 5, 1, 2, 3{]}) \newline d.rotate(-1) \newline print(d) \# deque({[}5, 1, 2, 3, 4{]})} \tn 
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% That's all folks
\end{multicols*}

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