Fix re string type

changes/1077.general.rst

@@ -0,0 +1 @@
+replaces deprecated string literals with raw strings in regex pattern matching

crds/certify/certify.py

@@ -687,7 +687,7 @@ def load(self):
 class AsdfCertifier(ReferenceCertifier):
     """Certifier for ADSF type,  invoke data models checks."""
 
-    _VERSION_RE = re.compile(f"^[0-9]+\.[0-9]+\.[0-9]+$")
+    _VERSION_RE = re.compile(r"^[0-9]+\.[0-9]+\.[0-9]+$")
 
     def certify(self):
         """Certify an unknown format file."""

crds/certify/validators/synphot.py

@@ -179,7 +179,7 @@ def _check_component_filename(context, reftype, suffix, filename, header):
         log.error("Header missing COMPNAME, unable to certify filename")
         return False
 
-    pattern = re.compile(".*_([0-9]{3})_" + suffix + ".fits")
+    pattern = re.compile(r".*_([0-9]{3})_" + suffix + r".fits")
 
     match = pattern.match(os.path.basename(filename))
     if not match:

crds/core/timestamp.py

@@ -291,7 +291,7 @@ def parse_numerical_date(dstr):
 class DateParser:
     """Abstract baseclass for defining date parsers."""
 
-    format = re.compile("^$")
+    format = re.compile(r"^$")
     should_be = "DATE FORMAT NOT DEFINED"
 
     @classmethod

crds/hst/siname.py

@@ -36,7 +36,7 @@ class UnknownCDBSPrefix(Exception):
   pass
 
 # global compiled regex for splitting filenames
-filesplit = re.compile("[_\.]")
+filesplit = re.compile(r"[_\.]")
 
 # post-SM2 instruments supported by CDBS
 CDBS_supports = ("ACS","STIS","NICMOS","WFPC2","WFC3","COS")

crds/submit/submit.py

@@ -360,7 +360,7 @@ def find_new_rmaps(self, old_maps, new_maps):
         return rnew
 
     def get_renamed_rmaps(self, soup, fmap):
-        diffs = soup.find_all(string=re.compile("Logical Diff"))
+        diffs = soup.find_all(string=re.compile(r"Logical Diff"))
         if len(diffs) > 0:
             for diff in diffs:
                 d = diff.split('(')[-1].split(')')[0]