RF: Raw strings for regexps

fsl/data/dicom.py

@@ -120,11 +120,11 @@ def enabled():
 
     cmd            = 'dcm2niix -h'
     versionPattern = re.compile(r'v'
-                                 '(?P<major>[0-9]+)\.'
-                                 '(?P<minor>[0-9]+)\.'
-                                 '(?P<year>[0-9]{4})'
-                                 '(?P<month>[0-9]{2})'
-                                 '(?P<day>[0-9]{2})')
+                                r'(?P<major>[0-9]+)\.'
+                                r'(?P<minor>[0-9]+)\.'
+                                r'(?P<year>[0-9]{4})'
+                                r'(?P<month>[0-9]{2})'
+                                r'(?P<day>[0-9]{2})')
 
     try:
         output = sp.check_output(cmd.split()).decode()

fsl/data/dtifit.py

@@ -50,7 +50,7 @@ def getDTIFitDataPrefix(path):
     # Gather all of the existing file
     # prefixes into a dictionary of
     # prefix : [file list] mappings.
-    pattern  = '^(.*)_(?:V1|V2|V3|L1|L2|L3).*$'
+    pattern  = r'^(.*)_(?:V1|V2|V3|L1|L2|L3).*$'
     prefixes = {}
 
     for f in [f for flist in files for f in flist]:

fsl/version.py

@@ -130,7 +130,7 @@ def patchVersion(filename, newversion):
     with open(filename, 'rt') as f:
         lines = f.readlines()
 
-    pattern = re.compile('^__version__ *= *\'.*\' *$')
+    pattern = re.compile(r'^__version__ *= *\'.*\' *$')
 
     for i, line in enumerate(lines):
         if pattern.match(line):