RE: [Zope] Zope Book -> Chap 3 -> Interest Rate Example

5 Jun 2003

      Here is the complete solution:

<html>
  <body>   
    <p>Your total balance (or debt) including compounded interest over
     <span tal:content="request/years">2</span> years is:</p>
      <span tal:define="principal request/principal; 
                        interest_rate request/interest_rate;
                        periods request/periods;
                        years request/years">
      <p><b>$<span tal:content="python:
here.calculateCompoundingInterest(
                       principal,
                       interest_rate,
                       periods,
                       years)">
               1.00
             </span>
           </b>
      </p>
     </span>
  </body>
</html>

-----Original Message-----
From: zope-admin@zope.org [mailto:zope-admin@zope.org] On Behalf Of
Simon Forster
Sent: Thursday, June 05, 2003 9:05 AM
To: Sylvain Thénault
Cc: zope@zope.org
Subject: Re: [Zope] Zope Book -> Chap 3 -> Interest Rate Example

On Thursday, June 5, 2003, at 01:51  pm, Sylvain Thénault wrote:
...
<span tal:content="request/form/years">2</span>
Thank you for that. That fixes one problem but then:

$<span tal:content="python: here.calculateCompoundingInterest(principal,
interest_rate,
periods,
years)" >1.00</span>

fails (as I would expect given your posting) but so does

<span tal:content="python: 
here.calculateCompoundingInterest(request/form/principal,
request/form/interest_rate,
request/form/periods,
request/form/years)" >1.00</span>

with error:

Error Type: NameError
Error Value: global name 'form' is not defined

while

<span tal:content="python: 
here.calculateCompoundingInterest(request/principal,
request/interest_rate,
request/periods,
request/years)" >1.00</span>

fails with error

Error Type: NameError
Error Value: global name 'principal' is not defined

Why?

Simon Forster
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RE: [Zope] Zope Book -> Chap 3 -> Interest Rate Example

Jamie White