diff options
Diffstat (limited to 'Doc/tut/tut.tex')
| -rw-r--r-- | Doc/tut/tut.tex | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/Doc/tut/tut.tex b/Doc/tut/tut.tex index 0378ba4..6927afe 100644 --- a/Doc/tut/tut.tex +++ b/Doc/tut/tut.tex @@ -488,11 +488,11 @@ example: >>> tax = 17.5 / 100 >>> price = 3.50 >>> price * tax -0.6125 +0.61249999999999993 >>> price + _ -4.1125 +4.1124999999999998 >>> round(_, 2) -4.11 +4.1100000000000003 \end{verbatim} This variable should be treated as read-only by the user. Don't @@ -2780,8 +2780,12 @@ string containing only a single newline. '' \end{verbatim} -\code{f.readlines()} uses \code{f.readline()} repeatedly, and returns -a list containing all the lines of data in the file. +\code{f.readlines()} returns a list containing all the lines of data +in the file. If given an optional parameter \var{sizehint}, it reads +that many bytes from the file and enough more to complete a line, and +returns the lines from that. This is often used to allow efficient +reading of a large file by lines, but without having to load the +entire file in memory. Only complete lines will be returned. \begin{verbatim} >>> f.readlines() |