# Python Implementation of the Ethereum Trie structure
`shell $ pip install ethereum-trie `
> Warning: This is an early release and is likely to contain bugs as well as > breaking API changes.
# Usage
`python >>> from trie import Trie >>> from trie.db.memory import MemoryDB >>> t = Trie(MemoryDB()) >>> t.root_hash b'V\xe8\x1f\x17\x1b\xccU\xa6\xff\x83E\xe6\x92\xc0\xf8n[H\xe0\x1b\x99l\xad\xc0\x01b/\xb5\xe3c\xb4!' >>> t.set(b'my-key', b'some-value') >>> t.get(b'my-key') b'some-value' >>> t.exists(b'another-key') False >>> t.set(b'another-key', b'another-value') >>> t.exists(b'another-key') True >>> t.delete(b'another-key') >>> t.exists(b'another-key') False `
You can also use it like a dictionary.
`python >>> from trie import Trie >>> from trie.db.memory import MemoryDB >>> t = Trie(MemoryDB()) >>> t.root_hash b'V\xe8\x1f\x17\x1b\xccU\xa6\xff\x83E\xe6\x92\xc0\xf8n[H\xe0\x1b\x99l\xad\xc0\x01b/\xb5\xe3c\xb4!' >>> t[b'my-key'] = b'some-value' >>> t[b'my-key'] b'some-value' >>> b'another-key' in t False >>> t[b'another-key'] = b'another-value' >>> b'another-key' in t True >>> del t[b'another-key'] >>> b'another-key' in t False `
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