On the following test file (test.py):

class Solution:
  def repeatedNumber(self, A):
    test = 1
      return []

Running python -m py_compile test.py return the following error message:
Sorry: IndentationError: unexpected indent (test.py, line 6)

But without a newline on stderr at the end of the message. This causes some problems with scripts that expect a newline and new my particular case with reading stderr on docker where docker just ignore the line if it doesn't end in a newline.

Also, this message differs from the runtime error message:

  File "test.py", line 6
    return []
    ^
IndentationError: unexpected indent

Would it be possible to at least add in a newline and at best, change the message to be consistent with the runtime error message?

I will trying to look at the code and see if I can write a patch but it will take me some time.

I can confirm that the bugs is demonstrated by copying the text below into a normal unix text file.

This patch adds new line symbol. For some reason py_compile module prints only SyntaxErrors with traceback. All other exceptions are printed with "Sorry:" and in one line.

New changeset 1e139b3c489e by Berker Peksag in branch '3.4':
Issue bpo-23811: Add missing newline to the PyCompileError error message.
https://hg.python.org/cpython/rev/1e139b3c489e

New changeset d39fe1e112a3 by Berker Peksag in branch 'default':
Issue bpo-23811: Add missing newline to the PyCompileError error message.
https://hg.python.org/cpython/rev/d39fe1e112a3

New changeset 22790c4f3b16 by Berker Peksag in branch '2.7':
Issue bpo-23811: Add missing newline to the PyCompileError error message.
https://hg.python.org/cpython/rev/22790c4f3b16

Thank you Alex.