fix tests

Author: Andy Landy

tests/test_utils.py

@@ -53,8 +53,8 @@ def match_text(self, text: str, sub_label: str = '') -> None:
 def strip_tb_text(text: str) -> str:
     OFTO = '...omitted for tests only, '
 
-    text = re.sub('\\', '/', text)  # cast win paths so the following rules could apply
-    text = re.sub('D:/', '/d/', text)  # same
+    text = re.sub(r'\\', '/', text)  # cast win paths so the following rules could apply
+    text = re.sub('[A-Z]:/', '/d/', text)  # same
     text = re.sub('\r', '', text)  # cast win lines
     text = re.sub(r'(/argparse.py", line )[^\n,]+(,)', fr'\1{OFTO}argparse internals...\2', text)  # argparse versions
     text = re.sub(r'( at 0x)\w+', fr'\1{OFTO}obj id...', text)  # object ids