Fixing flake8 linting errors

buildutils/build.py

@@ -4,7 +4,6 @@ import subprocess
 import os
 import shutil
 import sys
-import tempfile
 
 def build_libcapnp(bundle_dir, build_dir, verbose=False):
     '''

examples/async_calculator_client.py

@@ -56,7 +56,7 @@ async def main(host):
         reader, writer = await asyncio.open_connection(
             addr, port,
         )
-    except:
+    except Exception:
         print("Try IPv6")
         reader, writer = await asyncio.open_connection(
             addr, port,

examples/async_calculator_server.py

@@ -4,7 +4,6 @@ from __future__ import print_function
 import argparse
 import asyncio
 import socket
-import random
 import capnp
 
 import calculator_capnp
@@ -167,7 +166,7 @@ async def main():
             myserver,
             addr, port,
         )
-    except:
+    except Exception:
         print("Try IPv6")
         server = await asyncio.start_server(
             myserver,

examples/async_reconnecting_ssl_client.py

@@ -6,10 +6,10 @@ import asyncio
 import argparse
 import os
 import time
-import capnp
 import socket
 import ssl
-import time
+
+import capnp
 
 import thread_capnp
 
@@ -51,7 +51,6 @@ async def mywriter(client, writer):
             # to try again
             data = await asyncio.wait_for(client.read(4096), timeout=1.0)
             writer.write(data.tobytes())
-            #await writer.drain()
         except asyncio.TimeoutError:
             continue
 

test/test_examples.py

@@ -1,8 +1,6 @@
-import gc
 import os
 import socket
 import subprocess
-import sys  # add examples dir to sys.path
 import time
 
 examples_dir = os.path.join(os.path.dirname(__file__), '..', 'examples')