Easy "here documents" ??

[Bengt Richter]

On Mon, 20 Dec 2004 18:58:09 -0600, Doug Holton <insert at spam.here> wrote:

>> Jim Hill wrote:
>> 
>>> Is there a way to produce a very long multiline string of output with
>>> variables' values inserted without having to resort to this wacky
>>>
>>> """v = %s"""%(variable)
>
>No, it is currently not possible in Python without the hacks you have 
>seen already.  Python is long overdue for simpler string interpolation 
>as seen in many other scripting languages.
>
>You should add a feature request to have this in Python 3.0, a.k.a. 
>Python 3000: http://www.python.org/cgi-bin/moinmoin/Python3.0
>
>Then you could simple do something like:
>
>variable1 = 1
>variable2 = 2
>
>s = """
>    v = ${variable1}
>    v2's value is: ${variable2}
>"""
>
>However, Python 3.0 is likely years away.  If you want to know how to 
>run code like this today, consult Fredrik Lundh.

Or replace ${...} with equally simple %(...)s in the above and be happy ;-)

 >>> variable1 = 1
 >>> variable2 = 2
 >>>
 >>> s = """
 ...     v = ${variable1}
 ...     v2's value is: ${variable2}
 ... """
 >>> print s.replace('${','%(').replace('}',')s') % locals()

     v = 1
     v2's value is: 2

Better would be to write it with %(...)s in the first place though, or you may need
regex help for correct conversion (if involve other uses for the ${} chars).

Regards,
Bengt Richter