typo in doi regexp
must use `r` prefix when there are escapes
MODIFY
repo2docker/utils.py
repo2docker/utils.py
@@ -415,7 +415,7 @@ def deep_get(dikt, path):
# Copyright (C) 2018 Alan Rubin.
# Licensed under BSD-3-Clause license
doi_regexp = re.compile(
- "(doi:\s*|(?:https?://)?(?:dx\.)?doi\.org/)?(10\.\d+(.\d+)*/.+)$", flags=re.I
+ r"(doi:\s*|(?:https?://)?(?:dx\.)?doi\.org/)?(10\.\d+(.\d+)*/.+)$", flags=re.I
)

typo in doi regexp

must use `r` prefix when there are escapes