fix README and code cleanup

README.md

@@ -106,7 +106,8 @@ Using `--expert` will instruct dnstraceroute to print expert hints (such as warn
 dnseval is a bulk ping utility that sends an arbitrary DNS query to a give list
 of DNS servers. This script is meant for comparing response time of multiple
 DNS servers at once:
-```% ./dnseval.py -f public-v4.txt -c3 ripe.net
+```
+% ./dnseval.py -f public-v4.txt -c3 ripe.net
 server           avg(ms)     min(ms)     max(ms)     stddev(ms)  lost(%)  flags
 ----------------------------------------------------------------------------------
 8.8.8.8          210.225     109.864     407.420     170.785     %0       QR RD RA

dnsping.py

@@ -34,9 +34,9 @@ import sys
 import time
 from statistics import stdev
 
+import dns.flags
 import dns.rdatatype
 import dns.resolver
-import dns.flags
 
 __VERSION__ = 1.1
 __PROGNAME__ = os.path.basename(sys.argv[0])
@@ -168,7 +168,8 @@ def main():
             break
         try:
             stime = time.time()
-            answers = resolver.query(hostname, dnsrecord, source_port=src_port, source=src_ip, tcp=use_tcp, af=af, raise_on_no_answer=False)
+            answers = resolver.query(hostname, dnsrecord, source_port=src_port, source=src_ip, tcp=use_tcp, af=af,
+                                     raise_on_no_answer=False)
             etime = time.time()
         except dns.resolver.NoNameservers as e:
             if not quiet:

setup.py

@@ -1,4 +1,5 @@
 from setuptools import setup, find_packages
+
 setup(
     name="dnsdiag",
     version="1.3.5",