mirrors/cpython
1
0
Fork 0
mirror of https://github.com/python/cpython.git synced 2025-08-03 08:34:29 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 6

[Bug #953177] Mention .getlist(); text from Paul Moore

Browse source
This commit is contained in:
Andrew M. Kuchling 2004-06-06 23:28:23 +00:00
parent 9665271f92
commit 44cbfd7819
1 changed files with 4 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

13
Doc/lib/libcgi.tex
View file

@ -135,19 +135,14 @@ instance but a list of such instances. Similarly, in this situation,
\samp{form.getvalue(\var{key})} would return a list of strings.
If you expect this possibility
(when your HTML form contains multiple fields with the same name), use
the \function{isinstance()} built-in function to determine whether you
have a single instance or a list of instances. For example, this
the \function{getlist()} function, which always returns a list of values (so that you
do not need to special-case the single item case). For example, this
code concatenates any number of username fields, separated by
commas:
\begin{verbatim}
value = form.getvalue("username", "")
if isinstance(value, list):
# Multiple username fields specified
usernames = ",".join(value)
else:
# Single or no username field specified
usernames = value
value = form.getlist("username")
usernames = ",".join(value)
\end{verbatim}
If a field represents an uploaded file, accessing the value via the