[mod_python] using nested blocks in psp

I'm a newbie in python, and I'm fighting against nested blocks in psp.
Thats a little example with a funny behaviour:

Expand|Select|Wrap|Line Numbers

 
<html>

<form>

<select name="List">

<!--makes a list with a loop -->
 
<%

for i in range(50, 350, 50):

if 'List' in form and int(form['List'])==i:

sel="selected"

else:

sel="pippo"

%><option value="<%=i%>" <%=sel%> ><%=i%> </option>

<%

%>

</select>

<input type="submit" value="return"/>

</form>

</html>

In my intention, the for instruction have to run two operation:
first: the if instruction
second: to print the option tag on the html page.

Instead, the real behaviour is depending on the result of the control
in the if:
if the control is true, the option tag is not printed, and the for
instruction goes to the successive step.
if the control is false, the option is correctly printed.

I don't understand the reason of this behaviour.
Which is the right way to control the nested block instructions in psp?

Jun 11 '06 #1

Subscribe Post Reply

1646

grahamd

cloc3 wrote:

I'm a newbie in python, and I'm fighting against nested blocks in psp.
Thats a little example with a funny behaviour:

Expand|Select|Wrap|Line Numbers

<html>

<form>

<select name="List">



<%

for i in range(50, 350, 50):

  if 'List' in form and int(form['List'])==i:

   sel="selected"

  else:

   sel="pippo"

  %><option value="<%=i%>" <%=sel%> ><%=i%> </option>

  <%

%>

</select>

<input type="submit" value="return"/>

</form>

</html>

In my intention, the for instruction have to run two operation:
first: the if instruction
second: to print the option tag on the html page.

Instead, the real behaviour is depending on the result of the control
in the if:
if the control is true, the option tag is not printed, and the for
instruction goes to the successive step.
if the control is false, the option is correctly printed.

I don't understand the reason of this behaviour.
Which is the right way to control the nested block instructions in psp?

PSP as implemented by mod_python is fussy about how many spaces are
used in indents. Use either 8 space or tab indents. If you don't want
to do that, you will need to use comment hints to help PSP understand
what level of indenting you are using. See:

http://www.modpython.org/pipermail/m...ay/018102.html

Comment hints may still be needed in certain cases to turn off scopes
even if 8 space or tab indents are needed so it is good to understand
what they are about.

Also ask further questions on mod_python user mailing list as you will
in general get better responses there.

Graham

Jun 12 '06 #2

cloc3

gr*****@dscpl.com.au wrote:
See:

http://www.modpython.org/pipermail/m...ay/018102.html

Comment hints may still be needed in certain cases to turn off scopes
even if 8 space or tab indents are needed so it is good to understand
what they are about.

Thank you. That solves my problem.
Here the good code:

Expand|Select|Wrap|Line Numbers

 
<html>

<form>

<select name="Elenco">

<!--genera elenco usando un loop -->
 
<%

for i in range(50, 350, 50):

%>

<option value="<%=i%>"

<%

if 'Elenco' in form and int(form['Elenco'])==i:

%>

selected

<%

#end if

%>
<%=i%>

</option>

<%

# end for

%>

</select>

<input type="submit" value="acquisizione"/>

</form>

</html>

Jun 12 '06 #3

Similar topics

Nested blocks in PL/SQL

by: Mourad | last post by:

Hi all, This is an example of a nested block, however it seems Oracle doesn't like the syntax. see the error below: declare begin declare begin

Oracle Database

writing XML using nested tables...

by: Chris Birmele | last post by:

I am having difficulties maintaining table relationships when writing XML files, despite having set the relations property NESTED to TRUE. I assume therefore that something is wrong with my code. ...

.NET Framework

using application blocks

by: Philip Townsend | last post by:

Can anybody give me some advice/feedback on using application blocks? What are the prerequisites? Do I need to install componenets, or, do I need to upgrade to the latest version of the .net...

C# / C Sharp

Form Designer Breaks When Using Nested Namespaces

by: rmacias | last post by:

I posted this in another forum but nobody has answered it: I'm creating a Windows form application in VC++ .NET 2003. I'm creating the UI is a nested namespace as follows: namespace...

.NET Framework

How to using Nested Control in ASP.NET

by: kelvinweb | last post by:

Hi All, I found the Nested-Control example, but I don't understand the sources code. Anyone can send me simple logic programming source code ? Thanks alot. >From Kelvin

Visual Basic .NET

Using nested class, interface, inheritance gives error

by: rach | last post by:

I just started to learn C++. I copied the following code from a data structure textbook to a ".h" file and couldn't compile it. The code contains three template interfaces. One inherits another. The...

C / C++

Setting properties of a page in the aspx file without using code blocks

by: Achim Domma | last post by:

Hi, I have an aspx file which inherits from a class "MyPageClass" which has a property "MyProperty". I want to set MyProperty in the aspx file, but code blocks are not allowed in my environment...

ASP.NET

Cloud Servers without Credit Card and Email Registration: A Simpler Way to Get on the Cloud

by: CloudSolutions | last post by:

Introduction: For many beginners and individual users, requiring a credit card and email registration may pose a barrier when starting to use cloud servers. However, some cloud server providers now...

General

Wordpress or something else?

by: Faith0G | last post by:

I am starting a new it consulting business and it's been a while since I setup a new website. Is wordpress still the best web based software for hosting a 5 page website? The webpages will be...

Content Management Systems

Easy Steps to Fix "Canon Printer Won't Connect to WiFi Network"

by: taylorcarr | last post by:

A Canon printer is a smart device known for being advanced, efficient, and reliable. It is designed for home, office, and hybrid workspace use and can also be used for a variety of purposes. However,...

General

Basic Javascript concepts

by: aa123db | last post by:

Variable and constants Use var or let for variables and const fror constants. Var foo ='bar'; Let foo ='bar';const baz ='bar'; Functions function $name$ ($parameters$) { } ...

Javascript

Batch import of multiple excel files into the database

by: ryjfgjl | last post by:

If we have dozens or hundreds of excel to import into the database, if we use the excel import function provided by database editors such as navicat, it will be extremely tedious and time-consuming...

Data Management

Migrating Website to Cloud - Emmanuel Katto

by: emmanuelkatto | last post by:

Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel

General

Navigating the Data Structures and Algorithms (DSA)

by: BarryA | last post by:

What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...

Algorithms / Advanced Math

Is that possible of reading the .csv file in column wise and the column have different lengths ?

by: Sonnysonu | last post by:

This is the data of csv file 1 2 3 1 2 3 1 2 3 1 2 3 2 3 2 3 3 the lengths should be different i have to store the data by column-wise with in the specific length. suppose the i have to...

C / C++

How to build RAID in BIOS?

by: Hystou | last post by:

There are some requirements for setting up RAID: 1. The motherboard and BIOS support RAID configuration. 2. The motherboard has 2 or more available SATA protocol SSD/HDD slots (including MSATA, M.2...

Computer Hardware