Python bindings: Make examples PEP8 compliant

[babeltrace.git] / bindings / python / examples / babeltrace_and_lttng.py

diff --git a/bindings/python/examples/babeltrace_and_lttng.py b/bindings/python/examples/babeltrace_and_lttng.py
index 42ebc85eb3019c5e2579206b8ff36088dfc1a265..d837a53270e1e24a51c976c81d4a5292233d9f6d 100644 (file)
--- a/bindings/python/examples/babeltrace_and_lttng.py
+++ b/bindings/python/examples/babeltrace_and_lttng.py
@@ -1,19 +1,19 @@
 #!/usr/bin/env python3
 # babeltrace_and_lttng.py
-# 
+#
 # Babeltrace and LTTng example script
-# 
+#
 # Copyright 2012 EfficiOS Inc.
-# 
+#
 # Author: Danny Serres <danny.serres@efficios.com>
-# 
+#
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to deal
 # in the Software without restriction, including without limitation the rights
 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 # copies of the Software, and to permit persons to whom the Software is
 # furnished to do so, subject to the following conditions:
-# 
+#
 # The above copyright notice and this permission notice shall be included in
 # all copies or substantial portions of the Software.
 
@@ -29,25 +29,28 @@
 
 
 # ------------------------------------------------------
-ses_name =     "babeltrace-lttng-test"
-trace_path =   "/lttng-traces/babeltrace-lttng-trace/"
-out_file =     "babeltrace-lttng-trace-text-output.txt"
+ses_name = "babeltrace-lttng-test"
+trace_path = "/lttng-traces/babeltrace-lttng-trace/"
+out_file = "babeltrace-lttng-trace-text-output.txt"
 # ------------------------------------------------------
 
 
 import time
 try:
-       import babeltrace, lttng
+    import babeltrace
+    import lttng
 except ImportError:
-       raise ImportError(      "both babeltrace and lttng-tools "
-                               "python modules must be installed" )
+    raise ImportError( "both babeltrace and lttng-tools "
+                       "python modules must be installed")
 
 
 # Errors to raise if something goes wrong
 class LTTngError(Exception):
-       pass
+    pass
+
+
 class BabeltraceError(Exception):
-       pass
+    pass
 
 
 # LTTNG-TOOLS
@@ -56,9 +59,9 @@ class BabeltraceError(Exception):
 lttng.destroy(ses_name)
 
 # Creating a new session and handle
-ret = lttng.create(ses_name,trace_path)
+ret = lttng.create(ses_name, trace_path)
 if ret < 0:
-       raise LTTngError(lttng.strerror(ret))
+    raise LTTngError(lttng.strerror(ret))
 
 domain = lttng.Domain()
 domain.type = lttng.DOMAIN_KERNEL
@@ -66,7 +69,7 @@ domain.type = lttng.DOMAIN_KERNEL
 han = None
 han = lttng.Handle(ses_name, domain)
 if han is None:
-       raise LTTngError("Handle not created")
+    raise LTTngError("Handle not created")
 
 
 # Enabling all events
@@ -75,24 +78,24 @@ event.type = lttng.EVENT_ALL
 event.loglevel_type = lttng.EVENT_LOGLEVEL_ALL
 ret = lttng.enable_event(han, event, None)
 if ret < 0:
-       raise LTTngError(lttng.strerror(ret))
+    raise LTTngError(lttng.strerror(ret))
 
 # Start, wait, stop
 ret = lttng.start(ses_name)
 if ret < 0:
-       raise LTTngError(lttng.strerror(ret))
+    raise LTTngError(lttng.strerror(ret))
 print("Tracing...")
 time.sleep(2)
 print("Stopped.")
 ret = lttng.stop(ses_name)
 if ret < 0:
-       raise LTTngError(lttng.strerror(ret))
+    raise LTTngError(lttng.strerror(ret))
 
 
 # Destroying tracing session
 ret = lttng.destroy(ses_name)
 if ret < 0:
-       raise LTTngError(lttng.strerror(ret))
+    raise LTTngError(lttng.strerror(ret))
 
 
 # BABELTRACE
@@ -101,7 +104,7 @@ if ret < 0:
 traces = babeltrace.TraceCollection()
 ret = traces.add_trace(trace_path + "/kernel", "ctf")
 if ret is None:
-       raise BabeltraceError("Error adding trace")
+    raise BabeltraceError("Error adding trace")
 
 # Reading events from trace
 # and outputting timestamps and event names
@@ -110,7 +113,8 @@ print("Writing trace file...")
 output = open(out_file, "wt")
 
 for event in traces.events:
-       output.write("TS: {}, {} : {}\n".format(event.timestamp, event.cycles, event.name))
+    output.write("TS: {}, {} : {}\n".format(
+        event.timestamp, event.cycles, event.name))
 
 # Closing file
 output.close()