Using NLTK and WordNet; how do I convert simple tense verb into its present, past or past participle form?

Question

Using NLTK and WordNet, how do I convert simple tense verb into its present, past or past participle form?

For example:

I want to write a fu

Answer 1

JWI (the WordNet library by MIT) also has a stemmer (WordNetStemmer) which converts different morphological forms of a word like ("written", "writes", "wrote") to their base form. It seems it works only for nouns (like plurals) and verbs though.

Word Stemming in Java with WordNet and JWNL also shows how to do this kind of stemming using JWNL, another Java-based Wordnet library: