Fix all DeprecationWarning: invalid escape sequence (#6195)

BoboTiG · msullivan · commit 3c6c67be203b · 2019-01-15T09:44:03.000-08:00
diff --git a/misc/incremental_checker.py b/misc/incremental_checker.py
@@ -165,7 +165,7 @@ def filter_daemon_stats(output: str) -> Tuple[str, Dict[str, Any]]:
     lines = output.splitlines()
     output_lines = []
     for line in lines:
-        m = re.match('(\w+)\s+:\s+(.*)', line)
+        m = re.match(r'(\w+)\s+:\s+(.*)', line)
         if m:
             key, value = m.groups()
             stats[key] = value
diff --git a/scripts/find_type.py b/scripts/find_type.py
@@ -42,7 +42,7 @@ def run_mypy(mypy_and_args: List[str], filename: str, tmp_name: str) -> str:
     return proc.stdout.decode(encoding="utf-8")
 
 def get_revealed_type(line: str, relevant_file: str, relevant_line: int) -> Optional[str]:
-    m = re.match("(.+?):(\d+): error: Revealed type is '(.*)'$", line)
+    m = re.match(r"(.+?):(\d+): error: Revealed type is '(.*)'$", line)
     if (m and
             int(m.group(2)) == relevant_line and
             os.path.samefile(relevant_file, m.group(1))):
diff --git a/test-data/stdlib-samples/3.2/incomplete/urllib/parse.py b/test-data/stdlib-samples/3.2/incomplete/urllib/parse.py
@@ -943,7 +943,7 @@ def splitquery(url):
     global _queryprog
     if _queryprog is None:
         import re
-        _queryprog = re.compile('^(.*)\?([^?]*)$')
+        _queryprog = re.compile(r'^(.*)\?([^?]*)$')
 
     match = _queryprog.match(url)
     if match: return match.group(1, 2)
