Merge pull request #399 from josegonzalez/patch-1

Improve pep8 compliance

image/bin/my_init

@@ -1,5 +1,16 @@
 #!/usr/bin/python3 -u
-import os, os.path, sys, stat, signal, errno, argparse, time, json, re
+# -*- coding: utf-8 -*-
+
+import argparse
+import errno
+import json
+import os
+import os.path
+import re
+import signal
+import stat
+import sys
+import time
 
 KILL_PROCESS_TIMEOUT = int(os.environ.get('KILL_PROCESS_TIMEOUT', 5))
 KILL_ALL_PROCESSES_TIMEOUT = int(os.environ.get('KILL_ALL_PROCESSES_TIMEOUT', 5))
@@ -15,33 +26,43 @@ log_level = None
 
 terminated_child_processes = {}
 
+_find_unsafe = re.compile(r'[^\w@%+=:,./-]').search
+
+
 class AlarmException(Exception):
     pass
 
+
 def error(message):
     if log_level >= LOG_LEVEL_ERROR:
         sys.stderr.write("*** %s\n" % message)
 
+
 def warn(message):
     if log_level >= LOG_LEVEL_WARN:
         sys.stderr.write("*** %s\n" % message)
 
+
 def info(message):
     if log_level >= LOG_LEVEL_INFO:
         sys.stderr.write("*** %s\n" % message)
 
+
 def debug(message):
     if log_level >= LOG_LEVEL_DEBUG:
         sys.stderr.write("*** %s\n" % message)
 
+
 def ignore_signals_and_raise_keyboard_interrupt(signame):
     signal.signal(signal.SIGTERM, signal.SIG_IGN)
     signal.signal(signal.SIGINT, signal.SIG_IGN)
     raise KeyboardInterrupt(signame)
 
+
 def raise_alarm_exception():
     raise AlarmException('Alarm')
 
+
 def listdir(path):
     try:
         result = os.stat(path)
@@ -52,12 +73,14 @@ def listdir(path):
     else:
         return []
 
+
 def is_exe(path):
     try:
         return os.path.isfile(path) and os.access(path, os.X_OK)
     except OSError:
         return False
 
+
 def import_envvars(clear_existing_environment=True, override_existing_environment=True):
     if not os.path.exists("/etc/container_environment"):
         return
@@ -76,6 +99,7 @@ def import_envvars(clear_existing_environment = True, override_existing_environm
         if override_existing_environment or not name in os.environ:
             os.environ[name] = value
 
+
 def export_envvars(to_dir=True):
     if not os.path.exists("/etc/container_environment"):
         return
@@ -92,7 +116,6 @@ def export_envvars(to_dir = True):
     with open("/etc/container_environment.json", "w") as f:
         f.write(json.dumps(dict(os.environ)))
 
-_find_unsafe = re.compile(r'[^\w@%+=:,./-]').search
 
 def shquote(s):
     """Return a shell-escaped version of the string *s*."""
@@ -105,12 +128,15 @@ def shquote(s):
     # the string $'b is then quoted as '$'"'"'b'
     return "'" + s.replace("'", "'\"'\"'") + "'"
 
+
 def sanitize_shenvname(s):
     return re.sub(SHENV_NAME_WHITELIST_REGEX, "_", s)
 
 # Waits for the child process with the given PID, while at the same time
 # reaping any other child processes that have exited (e.g. adopted child
 # processes that have terminated).
+
+
 def waitpid_reap_other_children(pid):
     global terminated_child_processes
 
@@ -143,6 +169,7 @@ def waitpid_reap_other_children(pid):
                 raise
     return status
 
+
 def stop_child_process(name, pid, signo=signal.SIGTERM, time_limit=KILL_PROCESS_TIMEOUT):
     info("Shutting down %s (PID %d)..." % (name, pid))
     try:
@@ -168,6 +195,7 @@ def stop_child_process(name, pid, signo = signal.SIGTERM, time_limit = KILL_PROC
     finally:
         signal.alarm(0)
 
+
 def run_command_killable(*argv):
     filename = argv[0]
     status = None
@@ -185,11 +213,13 @@ def run_command_killable(*argv):
             error("%s failed with status %d\n" % (filename, os.WEXITSTATUS(status)))
         sys.exit(1)
 
+
 def run_command_killable_and_import_envvars(*argv):
     run_command_killable(*argv)
     import_envvars()
     export_envvars(False)
 
+
 def kill_all_processes(time_limit):
     info("Killing all processes...")
     try:
@@ -217,6 +247,7 @@ def kill_all_processes(time_limit):
     finally:
         signal.alarm(0)
 
+
 def run_startup_files():
     # Run /etc/my_init.d/*
     for name in listdir("/etc/my_init.d"):
@@ -230,6 +261,7 @@ def run_startup_files():
         info("Running /etc/rc.local...")
         run_command_killable_and_import_envvars("/etc/rc.local")
 
+
 def start_runit():
     info("Booting runit daemon...")
     pid = os.spawnl(os.P_NOWAIT, "/usr/bin/runsvdir", "/usr/bin/runsvdir",
@@ -237,6 +269,7 @@ def start_runit():
     info("Runit started as PID %d" % pid)
     return pid
 
+
 def wait_for_runit_or_interrupt(pid):
     try:
         status = waitpid_reap_other_children(pid)
@@ -244,11 +277,13 @@ def wait_for_runit_or_interrupt(pid):
     except KeyboardInterrupt:
         return (False, None)
 
+
 def shutdown_runit_services(quiet=False):
     if not quiet:
         debug("Begin shutting down runit services...")
     os.system("/usr/bin/sv -w %d down /etc/service/* > /dev/null" % KILL_PROCESS_TIMEOUT)
 
+
 def wait_for_runit_services():
     debug("Waiting for runit services to exit...")
     done = False
@@ -263,10 +298,12 @@ def wait_for_runit_services():
             # services.
             shutdown_runit_services(True)
 
+
 def install_insecure_key():
     info("Installing insecure SSH key for user root")
     run_command_killable("/usr/sbin/enable_insecure_key")
 
+
 def main(args):
     import_envvars(False, False)
     export_envvars()