\documentclass[10pt]{book}

\title{Think Python}

\author{Allen B. Downey}

\newcommand{\thetitle}{Think Python: How to Think Like a Computer Scientist}

\newcommand{\thedate}{}

In addition, people who spotted typos or made corrections include

Richard Fursa, Brian McGhie, Lokesh Kumar Makani, Matthew Shultz, Viet

Le, Victor Simeone, Lars O.D. Christensen, Swarup Sahoo, Alix Etienne,

{\tt n} is the number of line segments in our approximation of a circle,

so {\tt length} is the length of each segment. Thus, {\tt polygon}

One limitation of this solution is that {\tt n} is a constant, which

means that for very big circles, the line segments are too long, and

\begin{verbatim}

\end{verbatim}

enough that the circles look good, but big enough to be efficient,

and acceptable for any size circle.

\section{Refactoring}

\label{refactoring}