Fix a number of incorrect escapes

Pointed out by newer versions of pep8, but they were never correct.

tools/docs/docload.py

@@ -23,7 +23,7 @@ pagecount = 0
 quiet = False
 # regular expression used to search and extract the title on a given piece of
 # documentation, for further use in the application
-re_titlematch = re.compile('<title\s*>([^<]+)</title\s*>', re.IGNORECASE)
+re_titlematch = re.compile(r'<title\s*>([^<]+)</title\s*>', re.IGNORECASE)
 # regular expression used to find any images that are in the HTML and apply
 # additional bootstrap classes
 re_figure_match = re.compile('<div([^<>]+)class="figure"', re.IGNORECASE)

tools/ftp/spider_yum.py

@@ -8,7 +8,7 @@ import requests
 from collections import defaultdict
 from tempfile import NamedTemporaryFile
 
-re_platformdir = re.compile('^(\w+)-(\d+)-([^-]+)$')
+re_platformdir = re.compile(r'^(\w+)-(\d+)-([^-]+)$')
 
 if __name__ == "__main__":
     parser = argparse.ArgumentParser(description="Spider repo RPMs")

tools/localhtmlvalidate/localhtmlvalidate.py

@@ -61,7 +61,7 @@ if __name__ == "__main__":
         print("Warnings: %s" % resp.headers['x-w3c-validator-warnings'])
         hp = html.parser.HTMLParser()
         for m in re.findall('<li class="msg_err">.*?</li>', resp.text, re.DOTALL):
-            r = re.search('<em>Line <a href="[^"]+">(\d+)</a>.*<span class="msg">(.*?)</span>', m, re.DOTALL)
+            r = re.search(r'<em>Line <a href="[^"]+">(\d+)</a>.*<span class="msg">(.*?)</span>', m, re.DOTALL)
             if r:
                 print("Line %s (should be around %s): %s" % (r.group(1), int(r.group(1)) - firstline, hp.unescape(r.group(2))))
             r2 = re.search('<code class="input">(.*?)<strong title=".*?">(.*?)</strong>(.*?)</code>', m, re.DOTALL)