Reformat the code using Black

We could use some style consistency in the project and Black looks like
the best tool for the job.

Two flake8 errors are being silenced from now on:

* E203 whitespace before :
* W503 line break before binary operator

Both are to satisfy Black-formatted code (and W503 is somemwhat against
the latest PEP8 recommendations regarding line breaks and binary
operators in new code).

examples/browser.py

@@ -12,7 +12,7 @@
 
 
 def on_service_state_change(
-    zeroconf: Zeroconf, service_type: str, name: str, state_change: ServiceStateChange,
+    zeroconf: Zeroconf, service_type: str, name: str, state_change: ServiceStateChange
 ) -> None:
     print("Service %s of type %s state changed: %s" % (name, service_type, state_change))
 

examples/registration.py

@@ -17,10 +17,16 @@
 
     desc = {'path': '/~paulsm/'}
 
-    info = ServiceInfo("_http._tcp.local.",
-                       "Paul's Test Web Site._http._tcp.local.",
-                       socket.inet_aton("127.0.0.1"), 80, 0, 0,
-                       desc, "ash-2.local.")
+    info = ServiceInfo(
+        "_http._tcp.local.",
+        "Paul's Test Web Site._http._tcp.local.",
+        socket.inet_aton("127.0.0.1"),
+        80,
+        0,
+        0,
+        desc,
+        "ash-2.local.",
+    )
 
     zeroconf = Zeroconf()
     print("Registration of a service, press Ctrl-C to exit...")

examples/self_test.py

@@ -18,15 +18,20 @@
     r = Zeroconf()
     print("1. Testing registration of a service...")
     desc = {'version': '0.10', 'a': 'test value', 'b': 'another value'}
-    info = ServiceInfo("_http._tcp.local.",
-                       "My Service Name._http._tcp.local.",
-                       socket.inet_aton("127.0.0.1"), 1234, 0, 0, desc)
+    info = ServiceInfo(
+        "_http._tcp.local.",
+        "My Service Name._http._tcp.local.",
+        socket.inet_aton("127.0.0.1"),
+        1234,
+        0,
+        0,
+        desc,
+    )
     print("   Registering service...")
     r.register_service(info)
     print("   Registration done.")
     print("2. Testing query of service information...")
-    print("   Getting ZOE service: %s" % (
-        r.get_service_info("_http._tcp.local.", "ZOE._http._tcp.local.")))
+    print("   Getting ZOE service: %s" % (r.get_service_info("_http._tcp.local.", "ZOE._http._tcp.local.")))
     print("   Query done.")
     print("3. Testing query of own service...")
     queried_info = r.get_service_info("_http._tcp.local.", "My Service Name._http._tcp.local.")

pyproject.toml

@@ -0,0 +1,4 @@
+[tool.black]
+line-length = 110
+target_version = ['py35', 'py36', 'py37']
+skip_string_normalization = true

setup.cfg

@@ -2,6 +2,7 @@
 show-source = 1
 application-import-names=zeroconf
 max-line-length=110
+ignore=E203,W503
 
 [mypy]
 ignore_missing_imports = true

setup.py

@@ -11,14 +11,14 @@
 version = (
     [l for l in open(join(PROJECT_ROOT, 'zeroconf.py')) if '__version__' in l][0]
     .split('=')[-1]
-    .strip().strip('\'"')
+    .strip()
+    .strip('\'"')
 )
 
 setup(
     name='zeroconf',
     version=version,
-    description='Pure Python Multicast DNS Service Discovery Library '
-    '(Bonjour/Avahi compatible)',
+    description='Pure Python Multicast DNS Service Discovery Library ' '(Bonjour/Avahi compatible)',
     long_description=readme,
     author='Paul Scott-Murphy, William McBrine, Jakub Stasiak',
     url='https://github.com/jstasiak/python-zeroconf',
@@ -41,12 +41,6 @@
         'Programming Language :: Python :: Implementation :: CPython',
         'Programming Language :: Python :: Implementation :: PyPy',
     ],
-    keywords=[
-        'Bonjour', 'Avahi', 'Zeroconf', 'Multicast DNS', 'Service Discovery',
-        'mDNS',
-    ],
-    install_requires=[
-        'ifaddr',
-        'typing;python_version<"3.5"'
-    ],
+    keywords=['Bonjour', 'Avahi', 'Zeroconf', 'Multicast DNS', 'Service Discovery', 'mDNS'],
+    install_requires=['ifaddr', 'typing;python_version<"3.5"'],
 )