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README.md

@@ -59,6 +59,8 @@ __pywaves.Address(address, publicKey, privateKey, seed)__ _Creates a new Address
 
 `buy(assetPair, amount price, maxLifetime=30*86400, matcherFee=DEFAULT_MATCHER_FEE)` post a buy order
 
+`tradableBalance(assetPair)` get tradable balance for the specified asset pair
+
 `sell(assetPair, amount, price, maxLifetime=30*86400, matcherFee=DEFAULT_MATCHER_FEE)` post a sell order
 
 `lease(recipient, amount, txFee=DEFAULT_LEASE_FEE)` post a lease transaction

__init__.py

@@ -31,7 +31,7 @@
 CHAIN = 'mainnet'
 CHAIN_ID = 'W'
 PYWAVES_DIR='/Users/paolo/.pywaves'
-MATCHER = 'http://dev.pywaves.org:6886'
+MATCHER = 'https://nodes.wavesnodes.com'
 MATCHER_PUBLICKEY = ''
 
 DATAFEED = 'http://marketdata.wavesplatform.com'

address.py

@@ -501,6 +501,16 @@ def sell(self, assetPair, amount, price, maxLifetime=30 * 86400, matcherFee=pywa
         if id!=-1:
             return pywaves.Order(id, assetPair, self)
 
+    def tradableBalance(self, assetPair):
+        try:
+            balances = pywaves.wrapper('/matcher/orderbook/%s/%s/tradableBalance/%s' % ('WAVES' if assetPair.asset1.assetId == '' else assetPair.asset1.assetId, 'WAVES' if assetPair.asset2.assetId == '' else assetPair.asset2.assetId, self.address), host=pywaves.MATCHER)
+            amountBalance = balances['WAVES' if assetPair.asset1.assetId == '' else assetPair.asset1.assetId]
+            priceBalance = balances['WAVES' if assetPair.asset2.assetId == '' else assetPair.asset2.assetId]
+        except:
+            amountBalance = 0
+            priceBalance = 0
+        return amountBalance, priceBalance
+
     def lease(self, recipient, amount, txFee=pywaves.DEFAULT_LEASE_FEE):
         if not self.privateKey:
             logging.error('Private key required')