我无法在方框左侧添加行号。有人能帮我吗？
\documentclass{article}
\begin{document}
\fbox{\fbox{
\begin{minipage}{0.8\linewidth}
\textbf{def} mapper (key, value):
\hspace{7mm}\textbf{for} word \textbf{in} value.split():
\hspace{14mm}\textbf{yield} word, 1\\
\textbf{def} reducer (key , values):
\hspace{7mm}\textbf{yield} key, sum(values)\\
\textbf{if} name == "main":
\hspace{7mm}\textbf{import} dumbo
\hspace{7mm}dumbo.run (mapper, reducer, combiner=reducer )
\end{minipage}
}}
\end{document}
谢谢
答案1
\documentclass{article}
\usepackage{listings}
\lstset{numbers=left,numberstyle=\tiny,numbersep=1em,
morekeywords={def,for,yield,if,import},
keywordstyle=\bfseries,frame=TLBR}
\begin{document}
\begin{lstlisting}
def mapper (key, value):
for word in value.split():
yield word, 1
def reducer (key , values):
yield key, sum(values)
if name == "main":
import dumbo
dumbo.run (mapper, reducer, combiner=reducer )
\end{lstlisting}
\end{document}