Python Syntax Error: For Loop with Set Modulus Bound

[alex-usher]

Dafny version

4.1.0

Code to produce this issue

method Main() {
    for i := 0 to |(set x : int | 0 <= x < 3 :: x)| {
        var a := 1;
    }
}

Command to run and resulting output

$ dafny /compile:4 /compileTarget:py main.dfy
Dafny program verifier finished with 1 verified, 0 errors
Wrote textual form of target program to main-py/main.py
Additional target code written to main-py/_dafny.py
Additional target code written to main-py/System_.py
Additional target code written to main-py/module_.py
Running...

Traceback (most recent call last):
  File "main-py/main.py", line 7, in <module>
    import module_
  File "main-py/module_.py", line 21
    hi0_: intdef iife0_():
                 ^^^^^^
SyntaxError: invalid syntax

What happened?

Compiling and running the above program for the Python backend verified and produced an output file, but when running Python over the output file, the syntax error is thrown and the program aborts. This occurs when the loop is non-empty and the bound is a modulus over a set comprehension. I would expect the behaviour to follow the other backends, which run successfully.

What type of operating system are you experiencing the problem on?

Linux, Mac