Ensure only resources that exist get copied

Author: iKevinY

EulerPy/problem.py

@@ -58,16 +58,24 @@ def copy_resources(self):
 
         resourcesDir = os.path.join(os.getcwd(), 'resources', '')
 
+        copiedResources = []
+
         for resource in self.resources:
             src = os.path.join(dataDir, 'resources', resource)
-            shutil.copy(src, resourcesDir)
-
-        msg = "Copied {0} to {1}.".format(', '.join(
-            '"%s"' % resource for resource in self.resources),
-            os.path.relpath(resourcesDir, os.pardir)
-        )
-
-        click.secho(msg, fg='green')
+            try:
+                shutil.copy(src, resourcesDir)
+            except IOError:
+                pass
+            else:
+                copiedResources.append(resource)
+
+        if copiedResources:
+            msg = "Copied {0} to {1}.".format(
+                ', '.join(copiedResources),
+                os.path.relpath(resourcesDir, os.pardir)
+            )
+
+            click.secho(msg, fg='green')
 
 
     @property