Exception or not

[Monica Leko]

Suppose you have some HTML forms which you would like to validate.
Every field can have different errors.  For example, this are the
forms:

username
password
etc

And you want to validate them with some class.  Is this good pattern:

class Foo(object):
def validateUsername(username):
  if username isn't correct:
raise ValidationError()
def validatePassword(password):
  if password isn't correct:
raise ValidationError()

code:
try:
  usernameError = validateUsername()
except ValidationError:
  usernameError = error from exception
try:
  passwordError = validatePassword()
except ValidationError:
  passwordError = error from exception

So, if there wasn't any errors, usernameError and passwordError both
contains None, and there was error, both contains some string?  Should
I use exception or just return None or some string without
exception?
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Unit testing Web applications

[Monica Leko]

Hi!

Does Python has some testing frameworks for testing Web applications
(like Cactus and HttpUnit for Java), generating requests and checking
if the response is correct?
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Write bits in file

[Monica Leko]

Hi

I have a specific format and I need binary representation.  Does
Python have some built-in function which will, for instance, represent
number 15 in exactly 10 bits?
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Re: Write bits in file

[Monica Leko]

On May 18, 2:20 pm, Ken Starks <[EMAIL PROTECTED]> wrote:
> You want your file considered as a sequence of bits rather
> than a sequence of 8-bit bytes, do you?

Yes.

> is the 10-bit
> bit-pattern to be stored at an arbitrary bit-position in
> the file

Yes.  I need arbitrary, 8bits, than 10 bits for something else, than
sequence of bytes, than 10 bits again, etc.


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