I am using pycoin version 0.52 from pypi and it is getting the wrong output address from a transaction.

Code

# testnet txid and corresponding rawtx
# see https://test-insight.bitpay.com/tx/e20af2349c48774eddda161b74659e3e64ad0f62794df9a2271e6baa313796f2
txid = "e20af2349c48774eddda161b74659e3e64ad0f62794df9a2271e6baa313796f2"
rawtx = "010000000120addc4fc706417fad4158b4b9e30f9289e7dac4918277dc189e03f9a0155064000000006b483045022100b49bae1352d24d9673396bb01a23da583e01c5226347be6cf0f75477cce7f628022062eeb7a5a9b87a97f834660ce417278d4889d525e7e0f947020efdda045d54530121028895b78ad435814caecbeeb43453e4881a96d32c23d61b909dee06ad44c07ad5ffffffff0273a139c3000000001976a914a6d608497ad283ca93c1bdc3abb0a610b8edb18988ac80a81201000000001976a914f4131906b10615a61af347c56f1223ddc214f95c88ac00000000"

from pycoin.tx.Tx import Tx

tx = Tx.tx_from_hex(rawtx)
out = tx.txs_out[1]

print "expected", "n3mW3o8XNMyH6xHWBkN98rm7zxxxswzpGM"
print "actually", out.bitcoin_address()

Output

$ python test.py
expected n3mW3o8XNMyH6xHWBkN98rm7zxxxswzpGM
actually 1PFYkk3YZLY2KqotUBPmJwYo8yNFz3Nxyy