update example

README.rst

@@ -5,6 +5,47 @@ Client side implementation for Trezor-compatible Bitcoin hardware wallets.
 
 See http://bitcointrezor.com for more information.
 
+Example
+-------
+
+also found in ``helloworld.py``
+
+.. code:: python
+
+  #!/usr/bin/python
+
+  from trezorlib.client import TrezorClient
+  from trezorlib.transport_hid import HidTransport
+
+  def main():
+      # List all connected TREZORs on USB
+      devices = HidTransport.enumerate()
+
+      # Check whether we found any
+      if len(devices) == 0:
+          print 'No TREZOR found'
+          return
+
+      # Use first connected device
+      transport = HidTransport(devices[0])
+
+      # Creates object for manipulating TREZOR
+      client = TrezorClient(transport)
+
+      # Print out TREZOR's features and settings
+      print client.features
+
+      # Get the first address of first BIP44 account
+      # (should be the same address as shown in mytrezor.com)
+      bip32_path = client.expand_path("44'/0'/0'/0/0")
+      address = client.get_address('Bitcoin', bip32_path)
+      print 'Bitcoin address:', address
+
+      client.close()
+
+  if __name__ == '__main__':
+      main()
+
 How to install (Windows)
 ------------------------
 * Install Python 2.7 (http://python.org)

helloworld.py

@@ -7,6 +7,11 @@ def main():
     # List all connected TREZORs on USB
     devices = HidTransport.enumerate()
 
+    # Check whether we found any
+    if len(devices) == 0:
+        print 'No TREZOR found'
+        return
+
     # Use first connected device
     transport = HidTransport(devices[0])
 
@@ -16,10 +21,10 @@ def main():
     # Print out TREZOR's features and settings
     print client.features
 
-    # Get first address of first BIP44 account
-    # (should be the same address as in mytrezor.com)
+    # Get the first address of first BIP44 account
+    # (should be the same address as shown in mytrezor.com)
     bip32_path = client.expand_path("44'/0'/0'/0/0")
-    address = client.get_address('Bitcoin', bip32_path, True)
+    address = client.get_address('Bitcoin', bip32_path)
     print 'Bitcoin address:', address
 
     client.close()