How to use 'repl it python' in Python

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def repl(env=None):
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    """Start the interactive Read-Eval-Print-Loop"""
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    eof = "^Z" if sys.platform[0:3] == 'win' else "^D"
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    print("")
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    print("                 " + faded("                             \`.    T       "))
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    print("    Welcome to   " + faded("   .--------------.___________) \   |    T  "))
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    print("   the DIY Lang  " + faded("   |//////////////|___________[ ]   !  T |  "))
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    print("       REPL      " + faded("   `--------------'           ) (      | !  "))
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    print("                 " + faded("                              '-'      !    "))
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    print(faded("  use " + eof + " to exit"))
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    print("")
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    if env is None:
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        env = Environment()
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    while True:
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        try:
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            source = read_expression()
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            print(interpret(source, env))
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        except DiyLangError as e:
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            print(colored("!", "red"))
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            print(faded(str(e.__class__.__name__) + ":"))
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            print(str(e))
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        except KeyboardInterrupt:
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            msg = "Interrupted. " + faded("(Use " + eof + " to exit)")
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            print("\n" + colored("! ", "red") + msg)
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        except EOFError:
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            print(faded("\nBye! o/"))
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            sys.exit(0)
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        except Exception as e:
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            print(colored("! ", "red") +
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                  faded("The Python is showing through…"))
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            print(faded("  " + str(e.__class__.__name__) + ":"))
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            print(str(e))