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:
parent
87e611e441
commit
e51aa5b2cd
|
@ -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'
|
||||
|
|
Loading…
Reference in New Issue