Is there an online interpreter like http://codepad.org/ or http://www.trypython.org/ which uses Python 3?
Answer
Since the question is closed, I give another answer here.
Wandbox offers online REPLs for many languages, including Python 2.x and 3.x, C++ and Java.
This question is related to
python
shell
python-3.x
interpreter
Ideone supports Python 2.6 and Python 3
I recently came across Python 3 interpreter at CompileOnline.
Source: Stackoverflow.com