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| -rw-r--r-- | Doc/tut/tut.tex | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/Doc/tut/tut.tex b/Doc/tut/tut.tex index 40ced7c..052e9d3 100644 --- a/Doc/tut/tut.tex +++ b/Doc/tut/tut.tex @@ -3166,6 +3166,21 @@ entire file in memory. Only complete lines will be returned. ['This is the first line of the file.\n', 'Second line of the file\n'] \end{verbatim} +An alternate approach to reading lines is to loop over the file object. +This is memory efficient, fast, and leads to simpler code: + +\begin{verbatim} +>>> for line in f: + print line, + +This is the first line of the file. +Second line of the file +\end{verbatim} + +The alternative approach is simpler but does not provide as fine-grained +control. Since the two approaches manage line buffering differently, +they should not be mixed. + \code{f.write(\var{string})} writes the contents of \var{string} to the file, returning \code{None}. |