diff --git a/setup.py b/setup.py
index 9746aef535ce31103828d9ed0f3b75f02b00d255..3bc1320214f81557926579382afeb7da2d4895d6 100755
--- a/setup.py
+++ b/setup.py
@@ -13,7 +13,7 @@ with open("README.md", "r", encoding="utf-8") as fh:
 
 setuptools.setup(
     name="coursebox",
-    version="0.1.20.9",
+    version="0.1.20.13",
     author="Tue Herlau",
     author_email="tuhe@dtu.dk",
     description="A course management system currently used at DTU",
diff --git a/src/coursebox.egg-info/PKG-INFO b/src/coursebox.egg-info/PKG-INFO
index 4f9cbecdd117062ef27cd85afbb97d22c8e4ff81..35cedfbbca25be35ec3dbd3ec0d1974a18ce5a38 100644
--- a/src/coursebox.egg-info/PKG-INFO
+++ b/src/coursebox.egg-info/PKG-INFO
@@ -1,6 +1,6 @@
 Metadata-Version: 2.2
 Name: coursebox
-Version: 0.1.20.9
+Version: 0.1.20.13
 Summary: A course management system currently used at DTU
 Home-page: https://lab.compute.dtu.dk/tuhe/coursebox
 Author: Tue Herlau
diff --git a/src/coursebox/core/info.py b/src/coursebox/core/info.py
index 3e351d2e1c1e4d47f2779f2baf6ccd57d0935a4c..07dd4033709a0c09e33020b16e2ca2689b93d1eb 100755
--- a/src/coursebox/core/info.py
+++ b/src/coursebox/core/info.py
@@ -471,7 +471,7 @@ def class_information(verbose=False,
     d['sections'] = sections
 
     # current_lecture = -2
-    from datetime import timedelta
+
     # l['date'] - datetime.timedelta(days=7)
 
     # Long before firrst.
diff --git a/src/coursebox/core/info_paths.py b/src/coursebox/core/info_paths.py
index 042733e1919ef2d27ee5d66fa3080e7734f9e62d..886fe722d99d9db940b563eb0d94a8b0c8c13f41 100755
--- a/src/coursebox/core/info_paths.py
+++ b/src/coursebox/core/info_paths.py
@@ -18,7 +18,6 @@ def get_paths():
     if layout is None:
         layout = {}
 
-
     root_02450public = os.path.normpath(CDIR + "/../..")
     root_02450private = os.path.normpath( layout.get('private', root_02450public + "/../%sprivate"%num  ))
     root_02450instructors = os.path.normpath( layout.get('instructors', root_02450private + "/../%sinstructors"%num))
diff --git a/src/coursebox/core/projects.py b/src/coursebox/core/projects.py
index 65ba0d46b692e9a8e908a7363e02e3e6e4e09c31..33f2f44b0fba92010a70d7582d3fbba20af9c3b0 100755
--- a/src/coursebox/core/projects.py
+++ b/src/coursebox/core/projects.py
@@ -354,7 +354,7 @@ def search_projects(paths, sheet_number, patterns):
                     students = []
                     print("> Finding student ID. Warning: The pdf file", pdf, "appers to have no text content.")
                 else:
-                    students = re.findall('s\d\d\d\d\d\d', pdf_parsed['content'], flags=re.IGNORECASE)
+                    students = re.findall(r's\d\d\d\d\d\d', pdf_parsed['content'], flags=re.IGNORECASE)
                 gps[id] += students
 
             # Collect from .tex files:
@@ -365,7 +365,7 @@ def search_projects(paths, sheet_number, patterns):
                 id = group_id_from_file(tex)
                 tex_parsed = recursive_tex_collect(tex)
                 tex_parsed = "\n".join([(l[:l.find("%")] if "%" in l else l) for l in tex_parsed.splitlines()])
-                students = re.findall('s\d\d\d\d\d\d', tex_parsed, flags=re.IGNORECASE)
+                students = re.findall(r's\d\d\d\d\d\d', tex_parsed, flags=re.IGNORECASE)
                 gps[id] += students
 
     for id, students in gps.items():