Traceback (most recent call last):


 "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/mu/modes/microbit.py", line 75, in ls

result = tuple(microfs.ls(microfs.get_serial()))


 "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/mu/contrib/microfs.py", line 146, in ls

return ast.literal_eval(out.decode('utf-8'))


 "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/ast.py", line 48, in literal_eval

node_or_string = parse(node_or_string, mode='eval')


 "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/ast.py", line 35, in parse

return compile(source, filename, mode, PyCF_ONLY_AST)


 "<unknown>", line 1

ceback (most recent call last):

^
SyntaxError: invalid syntax

Traceback (most recent call last):

 "./app.py", line 42, in <module>
assert results == ['ok' for i in range(10)], "BAD RESULTS: %r" % resultsAssertionError: BAD RESULTS: ['ok', 'ok', 'ok', 'ok', 'ok', 'ok', WorkerLostError('Worker exited prematurely: exitcode 155.',), 'ok', 'ok', 'ok']