migrating print() to python 3

gui/kivy/nfc_scanner/scanner_android.py

@@ -123,7 +123,7 @@ class ScannerAndroid(NFCBase):
 
             details['recTypes'] = recTypes
         except Exception as err:
-            print str(err)
+            print(str(err))
 
         return details
 
@@ -141,7 +141,7 @@ class ScannerAndroid(NFCBase):
         #details = self.get_ndef_details(tag)
 
         if intent.getAction() not in action_list:
-            print 'unknow action, avoid.'
+            print('unknow action, avoid.')
             return
 
         rawmsgs = intent.getParcelableArrayExtra(NfcAdapter.EXTRA_NDEF_MESSAGES)
@@ -150,7 +150,7 @@ class ScannerAndroid(NFCBase):
         for message in rawmsgs:
             message = cast(NdefMessage, message)
             payload = message.getRecords()[0].getPayload()
-            print 'payload: {}'.format(''.join(map(chr, payload)))
+            print('payload: {}'.format(''.join(map(chr, payload))))
 
     def nfc_disable(self):
         '''Disable app from handling tags.

gui/kivy/uix/dialogs/qr_scanner.py

@@ -17,7 +17,7 @@ class QrScannerDialog(Factory.AnimatedPopup):
     def on_complete(self, x):
         ''' Default Handler for on_complete event.
         '''
-        print x
+        print(x)
 
 
 Builder.load_string('''

scripts/estimate_fee

@@ -2,4 +2,4 @@
 import util, json
 peers = util.get_peers()
 results = util.send_request(peers, 'blockchain.estimatefee', [2])
-print json.dumps(results, indent=4)
+print(json.dumps(results, indent=4))