modify python2 function to python3

blktrace.spec

@@ -7,8 +7,8 @@ Source:  http://brick.kernel.dk/snaps/blktrace-%{version}.tar.bz2
 URL:     https://git.kernel.dk/cgit/blktrace 
 
 BuildRequires: gcc, git, xz, libaio-devel, python3, librsvg2-devel blktrace sysstat theora-tools
-Provides:      iowatcher
-Obsoletes:     iowatcher
+Provides:      iowatcher = %{version}-%{release}
+Obsoletes:     iowatcher < %{version}-%{release}
 Requires:      python3
 
 Patch0: blktrace-fix-btt-overflow.patch

modify-python2-expression-to-python3.patch

@@ -1,11 +1,11 @@
-From 0a4798b479a46c1f804901fd227fbd9bd84da32e Mon Sep 17 00:00:00 2001
+From 007e3250a86bfaf78c3729197cc2add76de4aacc Mon Sep 17 00:00:00 2001
 From: eulerstorage <eulerstorage@huawei.com>
-Date: Wed, 18 Mar 2020 18:31:54 +0800
-Subject: [PATCH] 456
+Date: Wed, 18 Mar 2020 20:37:33 +0800
+Subject: [PATCH] 45
 
 ---
  btt/bno_plot.py | 14 +++++++-------
- btt/btt_plot.py |  6 ++++----
+ btt/btt_plot.py |  6 +++---
  2 files changed, 10 insertions(+), 10 deletions(-)
 
 diff --git a/btt/bno_plot.py b/btt/bno_plot.py
@@ -54,7 +54,7 @@ index aa92480..3506f33 100644
  		os.chdir(tmpdir)
  		os.system(cmd)
 diff --git a/btt/btt_plot.py b/btt/btt_plot.py
-index b81dad5..6e403ef 100755
+index b81dad5..79bdfad 100755
 --- a/btt/btt_plot.py
 +++ b/btt/btt_plot.py
 @@ -163,7 +163,7 @@ def get_data(files):
@@ -72,10 +72,9 @@ index b81dad5..6e403ef 100755
  		(opts, args) = getopt.getopt(args[1:], s_opts, l_opts)
 -	except getopt.error, msg:
 +	except getopt.error as msg:
-		print >>sys.stderr, msg
+ 		print >>sys.stderr, msg
  		fatal(__doc__)
  
- 	for (o, a) in opts:
 @@ -314,7 +314,7 @@ def generate_output(type, db):
  		ofile = '%s.png' % type