Fix invalid escape sequences in Python files

gpMgmt/bin/gppylib/logfilter.py

@@ -67,7 +67,7 @@ def FilterLogEntries(iterable,
                      filters=[],
                      ibegin=0,
                      jend=None):
-    """
+    r"""
     Generator to consume the lines of a GPDB log file from iterable,
     yield the lines which satisfy the given criteria, and skip the rest.
 
@@ -668,7 +668,7 @@ def MatchInFirstLine(iterable, regex):
 
 
 def NoMatchInFirstLine(iterable, regex):
-    """
+    r"""
     Generator to filter a stream of groups.  Skips those groups whose
     first line contains a match for the given regex; yields all other
     groups.

gpMgmt/bin/gppylib/mainUtils.py

@@ -488,7 +488,7 @@ def parseStatusLine(line, isStart = False, isStop = False):
 
 
 def check_fts(fts):
-    fts_check_cmd= "ps -ef | awk '{print \$2, \$8}' | grep gpfts | grep -v grep"
+    fts_check_cmd= r"ps -ef | awk '{print \$2, \$8}' | grep gpfts | grep -v grep"
     process_cmd = "gpssh -h %s -e \"%s\" | wc -l" % (fts, fts_check_cmd)
     fts_process_res=int(subprocess.check_output(process_cmd, shell=True).decode().strip())
     return fts_process_res == 2
@@ -500,7 +500,7 @@ def check_etcd(etcd):
     if etcd_process_res == 2:
         return True
     # for demo cluster
-    etcd_check_cmd = "ps -ef | awk '{print \$2, \$8}' | grep etcd | grep -v grep"
+    etcd_check_cmd = r"ps -ef | awk '{print \$2, \$8}' | grep etcd | grep -v grep"
     process_cmd = "gpssh -h %s -e \"%s\"| wc -l" % (etcd, etcd_check_cmd)
     etcd_process_res = int(subprocess.check_output(process_cmd, shell=True).decode().strip())
     return etcd_process_res == 2