Finished introduction

introduction/presentation/introduction.tex → introduction/introduction/introduction.tex

@@ -31,8 +31,23 @@
                    left=0.1cm,
                    arc=0mm,
                    colframe=black]}
- {\end{tcolorbox}
-}
+ {\end{tcolorbox}}
+
+
+\newenvironment{terminal}
+ {\begin{tcolorbox}[title=terminal,
+                   title filled=false,
+                   fonttitle=\scriptsize,
+                   fontupper=\footnotesize,
+                   enhanced,
+                   colback=monokaibg,
+                   drop small lifted shadow,
+                   boxrule=0.1mm,
+                   left=0.1cm,
+                   arc=0mm,
+                   colframe=black]}
+ {\end{tcolorbox}}
+
 
 \newcommand{\hrefcc}[2]{\textcolor{#1}{\href{#2}{#2}}}
 \newcommand{\hrefc}[3]{\textcolor{#1}{\href{#2}{#3}}}
@@ -287,15 +302,73 @@
   We'll use Python 3.7 for this course.
 \end{pframe}
 
-% \subsection{}
-% \begin{pframe}
-%  \begin{itemize}
-%   \item
-%  \end{itemize}
-% \end{pframe}
 
-\section{Python as a calculator}
+\section{Running Python code}
+
+\begin{pframe}
+  Two main ways of writing and executing Python code:
+  \begin{itemize}
+    \item Interactively:
+    \begin{itemize}
+     \item Statement by statement, directly in the interpreter.
+    \end{itemize}
+    \item Non-interactively:
+    \begin{itemize}
+     \item By editing in a file and running the code afterwards.
+    \end{itemize}
+  \end{itemize}
+\end{pframe}
+
+\subsection{The standard Python interpreter}
+\begin{pframe}
+  Start it by typing \textbf{python} on the command line:
+  \begin{terminal}
+  \color{white}{
+  \begin{lstlisting}[frame=,style=,numbers=none]
+$ python
+Python 3.7 (default, Nov 12 2018, 13:43:14)
+[GCC 5.4.0 20160609] on linux
+Type "help", "copyright", "credits" or "license" for more information.
+>>>
+  \end{lstlisting}}
+ \end{terminal}
+ \begin{itemize}
+  \item It shows an interpreter prompt.
+  \item You can give it Python code to interpret.
+ \end{itemize}
+\end{pframe}
+
 
+\subsection{The IPython interpreter}
+\begin{pframe}
+  Similar to the standard Python interpreter, but with:
+  \begin{itemize}
+    \item syntax highlighting;
+    \item tab completion;
+    \item cross-session history,
+    \item etc.
+  \end{itemize}
+
+  Start it by typing \textbf{ipython} on the command line:
+  \begin{terminal}
+  \color{white}{
+  \begin{lstlisting}[frame=,style=,numbers=none]
+$ ipython
+Python 3.7 (default, Nov 12 2018, 13:43:14)
+Type 'copyright', 'credits' or 'license' for more information
+IPython 6.1.0 -- An enhanced Interactive Python. Type '?' for help.
+  \end{lstlisting}}
+  \begin{pythonin}{python}
+  \end{pythonin}
+  \addtocounter{cntr}{-1}
+ \end{terminal}
+ \begin{itemize}
+  \item It shows an interpreter prompt.
+  \item You can give it Python code to interpret.
+ \end{itemize}
+\end{pframe}
+
+\section{Python as a calculator}
 
 \subsection{Integers}
 \begin{pframe}