Paul Wolf wrote:
> This is a proposal with a working implementation for a random string
> generation template syntax for Python. `strgen` is a module for generating
> random strings in Python using a regex-like template language. Example:
>
> >>> from strgen import StringGenerator as SG
> >>> SG("[\l\d]{8:15}&[\d]&[\p]").render()
> u'F0vghTjKalf4^mGLk'
Nice! Although very specialised :-)
I second what Ned and Chris have to say.
> If you look at various forums, like Stackoverflow, on how to generate
> random strings with Python, especially for passwords and other hopefully
> secure tokens, you will see dozens of variations of this:
[...]
> There is nothing wrong with this (it's the right answer and is very fast),
> but it leads developers to constantly:
>
> * Use cryptographically weak methods
> * Forget that the above does not guarantee a result that includes the
> different classes of characters
> * Doesn't include variable length or minimum length output
> * It's a lot of typing and the resulting code is vastly different each
> time making it hard to understand what features were
> implemented, especially for those new to the language
> * You can extend the above to include whatever requirements you want,
> but it's a constant exercise in wheel reinvention that is extremely
> verbose, error prone and confusing for exactly the same purposes
> each time
So, there's nothing wrong with it, except for the five things you list which
are wrong with it :-)
Seriously, if you're going to compete with the Stackoverflow ad hoc
solutions, you have to be more assertive that there is a problem with the
ad hoc solutions.
--
Steven
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