check_format: check Python style with pep8

Also continue checking for errors after a problem has been found.

Change-Id: Iea37311e54f68fb6ba8c804ad4b2fb92d5238f36
Signed-off-by: Daniel Verkamp <daniel.verkamp@intel.com>

scripts/check_format.sh

@@ -6,6 +6,8 @@ cd $BASEDIR
 # exit on errors
 set -e
 
+rc=0
+
 if hash astyle; then
 	echo -n "Checking coding style..."
 	rm -f astyle.log
@@ -21,17 +23,43 @@ if hash astyle; then
 		echo "Incorrect code style detected in one or more files."
 		echo "The files have been automatically formatted."
 		echo "Remember to add the files to your commit."
-		rm -f astyle.log
+		rc=1
-		exit 1
+	else
-	fi
 		echo " OK"
+	fi
 	rm -f astyle.log
 else
 	echo "You do not have astyle installed so your code style is not being checked!"
-	exit 0
 fi
 
-git grep -I -l -e . -z | \
+echo -n "Checking blank lines at end of file..."
-	xargs -0 -P8 -n1 scripts/eofnl
 
-exit 0
+if ! git grep -I -l -e . -z | \
+	xargs -0 -P8 -n1 scripts/eofnl > eofnl.log; then
+	echo " Incorrect end-of-file formatting detected"
+	cat eofnl.log
+	rc=1
+else
+	echo " OK"
+fi
+rm -f eofnl.log
+
+if hash pep8; then
+	echo -n "Checking Python style..."
+
+	PEP8_ARGS+=" --ignore=E302" # ignore 'E302 expected 2 blank lines, found 1'
+	PEP8_ARGS+=" --max-line-length=140"
+
+	error=0
+	git ls-files '*.py' | xargs -n1 pep8 $PEP8_ARGS > pep8.log || error=1
+	if [ $error -ne 0 ]; then
+		echo " Python formatting errors detected"
+		cat pep8.log
+		rc=1
+	else
+		echo " OK"
+	fi
+	rm -f pep8.log
+fi
+
+exit $rc

test/iscsi_tgt/rpc_config/rpc_config.py

@@ -401,7 +401,7 @@ def verify_add_nvme_bdev_rpc_methods(rpc_py):
         if out != '':
             ctrlr_address = "0000:{}".format(out.split(" ")[0])
             output = rpc.construct_nvme_bdev(ctrlr_address)
-            if output.strip()=='':
+            if output.strip() == '':
                 print "add nvme device passed first time"
                 test_pass = 1
             verify(test_pass == 1, 1, "add nvme device passed first time")