Update app.py

app.py

@@ -4,9 +4,9 @@ def func(percent, numBlocks):
     filledSquares = "<div style='height:50px;width:50px;background-color:#555;display:inline-block'></div> "
     emptySquares = "<div style='height:50px;width:50px;background-color:#999;display:inline-block'></div> "
     numFilled = round(round(percent/100) * numBlocks)
-    print("numFilled: " + numFilled)
+    print(f"numFilled: {numFilled}")
     numEmpty = numBlocks - numFilled
-    print("numEmpty: " + numEmpty)
+    print(f"numEmpty: {numEmpty}")
     HTMLstr = filledSquares * numFilled + emptySquares * numEmpty
     return HTMLstr