Rename the files for easier navigation.

1 files changed, 358 insertions, 0 deletions

diff --git a/advanced_python/2_names_objects.tex b/advanced_python/2_names_objects.tex
new file mode 100644
index 0000000..99eb4dd
--- /dev/null
+++ b/advanced_python/2_names_objects.tex
@@ -0,0 +1,358 @@
+\documentclass[14pt,compress,aspectratio=169]{beamer}
+
+
+\input{macros.tex}
+
+\title[Names and Objects]{Advanced Python}
+\subtitle{Statements, Expressions, Names, and Objects}
+
+\author[FOSSEE] {The FOSSEE Group}
+
+\institute[IIT Bombay] {Department of Aerospace Engineering\\IIT Bombay}
+\date[] {Mumbai, India}
+
+\begin{document}
+
+\begin{frame}
+  \titlepage
+\end{frame}
+
+\begin{frame}
+  \frametitle{Overview}
+  \begin{itemize}
+  \item Statements
+  \item Expressions
+  \item Variables
+  \item Objects
+  \item Names
+  \end{itemize}
+\end{frame}
+
+\begin{frame}
+  \frametitle{Recap of essential concepts}
+  \begin{itemize}
+  \item Mutable data types
+  \item Immutable data types
+  \end{itemize}
+\end{frame}
+
+\begin{frame}
+  \frametitle{Expressions}
+  \begin{itemize}
+  \item Evaluate to something
+  \item Describe some computation
+  \item Python evaluates expressions
+  \end{itemize}
+\end{frame}
+
+\begin{frame}[fragile]
+  \frametitle{Examples of Expressions}
+  \small
+  \begin{lstlisting}
+In []: 1
+Out[]: 1
+
+In []: (1 + 1.2) * 2.0
+Out[]: 4.4
+
+In []: sin(0.1)
+Out[]: 0.09983341664682815
+
+In []: (2 > 1) and (3 > 2)
+Out[]: True
+
+In []: [1, 2, 3, 4][::2]
+Out[]: [1, 3]
+# Note that each has an output
+  \end{lstlisting}
+\end{frame}
+
+\begin{frame}[fragile]
+  \frametitle{Statements}
+  \begin{itemize}
+  \item Instruct Python to perform some action
+  \item A program is a series of statements
+  \item A statement can have expressions
+  \item Assignments are statements
+  \end{itemize}
+\begin{lstlisting}
+In []: a = 1
+
+In []: a += 1
+\end{lstlisting}
+\end{frame}
+
+\begin{frame}[fragile]
+  \frametitle{Assignment statements}
+  \begin{lstlisting}
+In []: a = 1
+
+In []: a = 'hello'
+\end{lstlisting}
+\begin{itemize}
+\item These are assignment statements
+\item Values are \emph{Objects}
+\end{itemize}
+\end{frame}
+
+\begin{frame}
+  \frametitle{Objects}
+  \begin{itemize}
+  \item Objects: all data in Python
+  \item Have an identity, type, and value
+  \item Identity is checked using \typ{is}
+  \item Identity and type cannot change
+  \item Value of mutables change
+  \item Immutable object value cannot change
+  \end{itemize}
+\end{frame}
+
+\begin{frame}[fragile]
+  \frametitle{Names and objects}
+  \begin{itemize}
+  \item Assignment binds a name to an object
+  \end{itemize}
+  \begin{lstlisting}
+In []: a = 1
+
+In []: b = 1
+  \end{lstlisting}
+  \begin{itemize}
+  \item \typ{a} is a name for the object \typ{1}
+  \item \typ{b} is also a name for the same object \typ{1}
+  \end{itemize}
+  \begin{lstlisting}
+In []: b = a  # The same as above
+\end{lstlisting}
+\end{frame}
+
+\begin{frame}[fragile]
+  \frametitle{Visualizing this}
+  \begin{minipage}{0.4\textwidth}
+    \begin{lstlisting}
+In []: a = 1
+    \end{lstlisting}
+  \end{minipage}
+  \begin{minipage}{0.4\textwidth}
+    \includegraphics[width=2.5in]{data/a_eq_1.png}
+  \end{minipage}
+\pause
+  \begin{minipage}{0.4\textwidth}
+    \begin{lstlisting}
+In []: b = a
+    \end{lstlisting}
+  \end{minipage}
+  \begin{minipage}{0.4\textwidth}
+    \includegraphics[width=2.5in]{data/a_b_eq_1.png}
+  \end{minipage}
+
+  {\small Made with: \url{pythontutor.com}}
+\end{frame}
+
+\begin{frame}[fragile]
+  \frametitle{Visualizing this ...}
+  Set \typ{b} to something else:
+
+  \begin{minipage}{0.4\textwidth}
+    \begin{lstlisting}
+In []: a = 1
+
+In []: b = 2
+    \end{lstlisting}
+  \end{minipage}
+  \begin{minipage}{0.4\textwidth}
+    \includegraphics[width=2.5in]{data/a_1_b_2.png}
+  \end{minipage}
+
+  \vspace*{1in}
+  {\small Made with: \url{pythontutor.com}}
+\end{frame}
+
+\begin{frame}[fragile]
+  \frametitle{Names and objects ...}
+  \begin{itemize}
+  \item More interesting when \typ{a} is a list
+  \end{itemize}
+  \begin{minipage}{0.4\textwidth}
+  \begin{lstlisting}
+In []: a = [1, 2]
+\end{lstlisting}
+\end{minipage}
+  \begin{minipage}{0.4\textwidth}
+    \hspace*{0.2in}\includegraphics[width=2.25in]{data/a_list_b_2.png}
+  \end{minipage}
+\end{frame}
+
+\begin{frame}[fragile]
+  \frametitle{Names and objects ...}
+  \begin{minipage}{0.4\textwidth}
+  \begin{lstlisting}
+In []: b = a
+\end{lstlisting}
+\end{minipage}
+  \begin{minipage}{0.4\textwidth}
+    \hspace*{0.2in}\includegraphics[width=2.25in]{data/a_b_list.png}
+  \end{minipage}
+  \pause
+  \begin{itemize}
+  \item \typ{a} is a name for the object \typ{[1, 2]}
+  \item \typ{b} is also a name for the \alert{same object}
+  \item Changing the contents of \typ{a} reflect in \typ{b}
+  \end{itemize}
+\end{frame}
+
+
+\begin{frame}[fragile]
+  \frametitle{Names and objects ...}
+  \begin{minipage}{0.4\textwidth}
+  \begin{lstlisting}
+In []: a.append(3)
+
+In []: b
+Out[]: [1, 2, 3]
+  \end{lstlisting}
+\end{minipage}
+  \begin{minipage}{0.4\textwidth}
+    \hspace*{0.4in}\includegraphics[width=2.25in]{data/a_b_list1.png}
+  \end{minipage}
+
+\end{frame}
+
+\begin{frame}[fragile]
+  \frametitle{Names and objects ...}
+  \begin{minipage}{0.4\textwidth}
+  \begin{itemize}
+  \item Re-assign \typ{a}
+  \end{itemize}
+  \begin{lstlisting}
+In []: a = 'hello'
+\end{lstlisting}
+\pause
+\end{minipage}
+  \begin{minipage}{0.4\textwidth}
+    \hspace*{0.4in}\includegraphics[width=2.25in]{data/a_str_b_list.png}
+  \end{minipage}
+\end{frame}
+
+\begin{frame}[fragile]
+  \frametitle{Names and objects ...}
+  Rendered more compactly:
+  \vspace*{0.25in}
+  \begin{center}
+    \includegraphics[width=3in]{data/a_str_b_list_compact.png}
+  \end{center}
+  \vspace*{0.5in}
+  {\small Made with: \url{pythontutor.com}}
+\end{frame}
+
+\begin{frame}
+  \frametitle{Summary}
+  \begin{itemize}
+  \item Expressions: evaluate to something
+  \item Statements: instruct Python to do something
+  \item Objects: identity, type, value
+  \item Assignments bind names to objects
+  \item Frame: an environment for bindings
+  \item Explore \url{pythontutor.com}
+  \end{itemize}
+\end{frame}
+
+\begin{frame}[fragile]
+  \frametitle{Exercise 1}
+  \vspace*{-0.1in}
+\begin{lstlisting}
+a = [1, 2]
+b = a
+c = [10, 20]
+a.append(c)
+del b
+c.append(30)
+del c
+a[-1].append(40)
+a = 1
+\end{lstlisting}
+\vspace*{0.1in}
+  \begin{itemize}
+  \item Run step-by-step on \url{pythontutor.com}
+  \item Predict the output before you see the answer
+  \end{itemize}
+\end{frame}
+
+\begin{frame}[fragile]
+  \frametitle{Exercise 2}
+\begin{lstlisting}
+a = [1, 2]
+c = [10, 20]
+a.append(c)
+
+c.append(a)
+a.append(a)
+\end{lstlisting}
+\vspace*{0.1in}
+
+  \begin{itemize}
+  \item Run step-by-step on \url{pythontutor.com}
+  \item Predict the output before you see the answer
+  \end{itemize}
+\end{frame}
+
+\begin{frame}[fragile]
+  \frametitle{Exercise 3}
+\begin{lstlisting}
+x = [1, 2]
+y = 'hello'
+
+def f(x):
+   y = x + 1
+   return x*y
+
+f(2)
+\end{lstlisting}
+\vspace*{0.1in}
+  \begin{itemize}
+  \item Run step-by-step on \url{pythontutor.com}
+  \item Predict the output before you see the answer
+  \end{itemize}
+
+\end{frame}
+
+\begin{frame}[fragile]
+  \frametitle{Exercise 4}
+\begin{lstlisting}
+def f(x):
+    def g(x):
+        return x + 1
+    return g(x)
+
+f(1)
+f(2)
+\end{lstlisting}
+\vspace*{0.1in}
+  \begin{itemize}
+  \item Run step-by-step on \url{pythontutor.com}
+  \item Predict the output before you see the answer
+  \end{itemize}
+
+\end{frame}
+
+\begin{frame}[fragile]
+  \frametitle{Exercise 5}
+\begin{lstlisting}
+def mul(x):
+    def g(y):
+        return y*x
+    return g
+
+twice = mul(2.0)
+twice(20)
+\end{lstlisting}
+\vspace*{0.1in}
+  \begin{itemize}
+  \item Run step-by-step on \url{pythontutor.com}
+  \item Predict the output before you see the answer
+  \end{itemize}
+
+\end{frame}
+
+
+\end{document}