asynchat: PEP8-ify the code

Lib/test/test_asynchat.py

@@ -5,9 +5,12 @@
 # If this fails, the test will be skipped.
 thread = support.import_module('_thread')
 
-import asyncore, asynchat, socket, time
-import unittest
+import asynchat
+import asyncore
+import socket
 import sys
+import time
+import unittest
 try:
     import threading
 except ImportError:
@@ -28,8 +31,8 @@ def __init__(self, event):
             self.event = event
             self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
             self.port = support.bind_port(self.sock)
-            # This will be set if the client wants us to wait before echoing data
-            # back.
+            # This will be set if the client wants us to wait before echoing
+            # data back.
             self.start_resend_event = None
 
         def run(self):
@@ -52,8 +55,8 @@ def run(self):
 
             # re-send entire set of collected data
             try:
-                # this may fail on some tests, such as test_close_when_done, since
-                # the client closes the channel when it's done sending
+                # this may fail on some tests, such as test_close_when_done,
+                # since the client closes the channel when it's done sending
                 while self.buffer:
                     n = conn.send(self.buffer[:self.chunk_size])
                     time.sleep(0.001)
@@ -96,7 +99,7 @@ def start_echo_server():
         s.start()
         event.wait()
         event.clear()
-        time.sleep(0.01) # Give server time to start accepting.
+        time.sleep(0.01)   # Give server time to start accepting.
         return s, event
 
 
@@ -104,10 +107,10 @@ def start_echo_server():
 class TestAsynchat(unittest.TestCase):
     usepoll = False
 
-    def setUp (self):
+    def setUp(self):
         self._threads = support.threading_setup()
 
-    def tearDown (self):
+    def tearDown(self):
         support.threading_cleanup(*self._threads)
 
     def line_terminator_check(self, term, server_chunk):
@@ -117,7 +120,7 @@ def line_terminator_check(self, term, server_chunk):
         s.start()
         event.wait()
         event.clear()
-        time.sleep(0.01) # Give server time to start accepting.
+        time.sleep(0.01)   # Give server time to start accepting.
         c = echo_client(term, s.port)
         c.push(b"hello ")
         c.push(b"world" + term)
@@ -136,17 +139,17 @@ def line_terminator_check(self, term, server_chunk):
 
     def test_line_terminator1(self):
         # test one-character terminator
-        for l in (1,2,3):
+        for l in (1, 2, 3):
             self.line_terminator_check(b'\n', l)
 
     def test_line_terminator2(self):
         # test two-character terminator
-        for l in (1,2,3):
+        for l in (1, 2, 3):
             self.line_terminator_check(b'\r\n', l)
 
     def test_line_terminator3(self):
         # test three-character terminator
-        for l in (1,2,3):
+        for l in (1, 2, 3):
             self.line_terminator_check(b'qqq', l)
 
     def numeric_terminator_check(self, termlen):
@@ -269,11 +272,13 @@ def test_push(self):
 class TestAsynchat_WithPoll(TestAsynchat):
     usepoll = True
 
+
 class TestHelperFunctions(unittest.TestCase):
     def test_find_prefix_at_end(self):
         self.assertEqual(asynchat.find_prefix_at_end("qwerty\r", "\r\n"), 1)
         self.assertEqual(asynchat.find_prefix_at_end("qwertydkjf", "\r\n"), 0)
 
+
 class TestFifo(unittest.TestCase):
     def test_basic(self):
         f = asynchat.fifo()