re.compile versus r''

[Fredrik Lundh]

Terrence Brannon wrote:

> Hello, I'm using a tool (PLY) which apparently expects the tokens to
> be created using r''
> 
> But because one token is a rather complex regular expression, I want
> to create the regular expression programmatically.
> 
> How can I generate a string and then create something of the same type
> that the r'' function does?

r'' is an alternative syntax for string literals that affects how escape 
sequences are interpreted; there's no separate string type for strings 
created by this syntax.

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