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copied!<p>Not sure what the use case is. Here's my assumption: you're going to do a one-time conversion from Perl to Python.</p> <p>Perl has this</p> <pre><code>%config = ( 'color' => 'red', 'numbers' => [5, 8], qr/^spam/ => 'eggs' ); </code></pre> <p>In Python, it would be</p> <pre><code>config = { 'color' : 'red', 'numbers' : [5, 8], re.compile( "^spam" ) : 'eggs' } </code></pre> <p>So, I'm guessing it's a bunch of RE's to replace </p> <ul> <li><code>%variable = (</code> with <code>variable = {</code></li> <li><code>);</code> with <code>}</code></li> <li><code>variable => value</code> with <code>variable : value</code></li> <li><code>qr/.../ =></code> with <code>re.compile( r"..." ) : value</code></li> </ul> <p>However, Python's built-in <code>dict</code> doesn't do anything unusual with a regex as a hash key. For that, you'd have to write your own subclass of <code>dict</code>, and override <code>__getitem__</code> to check REGEX keys separately.</p> <pre><code>class PerlLikeDict( dict ): pattern_type= type(re.compile("")) def __getitem__( self, key ): if key in self: return super( PerlLikeDict, self ).__getitem__( key ) for k in self: if type(k) == self.pattern_type: if k.match(key): return self[k] raise KeyError( "key %r not found" % ( key, ) ) </code></pre> <p>Here's the example of using a Perl-like dict.</p> <pre><code>>>> pat= re.compile( "hi" ) >>> a = { pat : 'eggs' } # native dict, no features. >>> x=PerlLikeDict( a ) >>> x['b']= 'c' >>> x {<_sre.SRE_Pattern object at 0x75250>: 'eggs', 'b': 'c'} >>> x['b'] 'c' >>> x['ji'] Traceback (most recent call last): File "<stdin>", line 1, in <module> File "<stdin>", line 10, in __getitem__ KeyError: "key 'ji' not found" >>> x['hi'] 'eggs' </code></pre>

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