From 1f9be2c2367366397a9941f19849ecffee33515c Mon Sep 17 00:00:00 2001
From: Dima Gerasimov <karlicoss@gmail.com>
Date: Fri, 9 Oct 2020 20:55:27 +0100
Subject: [PATCH] fix after mypy version update

---
 my/kython/kompress.py | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/my/kython/kompress.py b/my/kython/kompress.py
index df49bcc..4fa2840 100644
--- a/my/kython/kompress.py
+++ b/my/kython/kompress.py
@@ -28,7 +28,11 @@ def kopen(path: PathIsh, *args, mode: str='rt', **kwargs) -> IO[str]:
     suf = pp.suffix
     if suf in {'.xz'}:
         import lzma
-        return lzma.open(pp, mode, *args, **kwargs)
+        r = lzma.open(pp, mode, *args, **kwargs)
+        # should only happen for binary mode?
+        # file:///usr/share/doc/python3/html/library/lzma.html?highlight=lzma#lzma.open
+        assert not isinstance(r, lzma.LZMAFile), r
+        return r
     elif suf in {'.zip'}:
         # eh. this behaviour is a bit dodgy...
         from zipfile import ZipFile