In [43]: import lucene

In [44]: lucene.IndexReader
Out[44]: <type 'IndexReader'>

In [45]: dir(lucene.IndexReader)
Out[45]:
['FieldOption',
 '__class__',
 '__delattr__',
 '__doc__',
 '__eq__',
 '__ge__',
 '__getattribute__',
 '__gt__',
 '__hash__',
 '__init__',
 '__le__',
 '__lt__',
 '__ne__',
 '__new__',
 '__reduce__',
 '__reduce_ex__',
 '__repr__',
 '__setattr__',
 '__str__',
 '_jobject',
 'cast_',
 'class',
 'class_',
 'close',
 'current',
 'decRef',
 'deleteDocument',
 'deleteDocuments',
 'directory',
 'docFreq',
 'document',
 'equals',
 'flush',
 'getClass',
 'getCurrentVersion',
 'getFieldNames',
 'getIndexCommit',
 'getTermFreqVector',
 'getTermFreqVectors',
 'getTermInfosIndexDivisor',
 'getVersion',
 'hasDeletions',
 'hasNorms',
 'hashCode',
 'incRef',
 'indexCommit',
 'indexExists',
 'instance_',
 'isCurrent',
 'isDeleted',
 'isLocked',
 'isOptimized',
 'lastModified',
 'listCommits',
 'main',
 'maxDoc',
 'norms',
 'notify',
 'notifyAll',
 'numDeletedDocs',
 'numDocs',
 'open',
 'optimized',
 'reopen',
 'setNorm',
 'setTermInfosIndexDivisor',
 'termDocs',
 'termInfosIndexDivisor',
 'termPositions',
 'terms',
 'toString',
 'undeleteAll',
 'unlock',
 'version',
 'wait',
 'wrapfn_']

In [46]: dir(lucene.IndexSearcher)
Out[46]:
['__class__',
 '__delattr__',
 '__doc__',
 '__eq__',
 '__ge__',
 '__getattribute__',
 '__gt__',
 '__hash__',
 '__init__',
 '__le__',
 '__lt__',
 '__ne__',
 '__new__',
 '__reduce__',
 '__reduce_ex__',
 '__repr__',
 '__setattr__',
 '__str__',
 '_jobject',
 'cast_',
 'class',
 'class_',
 'close',
 'doc',
 'docFreq',
 'docFreqs',
 'equals',
 'explain',
 'getClass',
 'getIndexReader',
 'getSimilarity',
 'hashCode',
 'indexReader',
 'instance_',
 'maxDoc',
 'notify',
 'notifyAll',
 'rewrite',
 'search',
 'setSimilarity',
 'similarity',
 'toString',
 'wait',
 'wrapfn_']

In [47]: directory = lucene.FSDirectory.getDirectory('/var/tmp/lucene/index/', False)

In [48]: reader = lucene.IndexReader(directory)
---------------------------------------------------------------------------
exceptions.NotImplementedError                       Traceback (most recent call last)

/home/sis/sbe/codaz/stocklog2/<ipython console>

NotImplementedError: ('instantiating java class', <type 'IndexReader'>)

In [49]: lucene.VERSION
Out[49]: '2.4.1'