Minor clarifications by Sean Reifschneider:

- add example of string literal concatenation
- add clarifying comment to the example of the if statement
This commit is contained in:
Guido van Rossum 1999-01-06 23:14:14 +00:00
parent 87e611e441
commit e51aa5b2cd
1 changed files with 15 additions and 1 deletions

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@ -549,7 +549,20 @@ operator, and repeated with \code{*}:
Two string literals next to each other are automatically concatenated;
the first line above could also have been written \samp{word = 'Help'
'A'}; this only works with two literals, not with arbitrary string expressions.
'A'}; this only works with two literals, not with arbitrary string
expressions:
\begin{verbatim}
>>> 'str' 'ing' # <- This is ok
'string'
>>> string.strip('str') + 'ing' # <- This is ok
'string'
>>> string.strip('str') 'ing' # <- This is invalid
File "<stdin>", line 1
string.strip('str') 'ing'
^
SyntaxError: invalid syntax
\end{verbatim}
Strings can be subscripted (indexed); like in \C{}, the first character
of a string has subscript (index) 0. There is no separate character
@ -853,6 +866,7 @@ Perhaps the most well-known statement type is the \keyword{if}
statement. For example:
\begin{verbatim}
>>> # [Code which sets 'x' to a value...]
>>> if x < 0:
... x = 0
... print 'Negative changed to zero'