iio_info.py: update to black and fix pylint issues

.prospector.yml

@@ -35,4 +35,6 @@ pep257:
   disable: [
     D203,  # 1 blank line required before class docstring
            # conflicts with D0211, No blank lines allowed before class docstring
+    D402,  # First line should not be the function's "signature"
+           # conflicts with D213, Multi-line docstring summary should start at the second line
   ]

bindings/python/examples/iio_info.py

@@ -1,93 +1,102 @@
 #!/usr/bin/env python
-#
-# Copyright (C) 2015 Analog Devices, Inc.
-# Author: Paul Cercueil <[email protected]>
-#
-# This program is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+"""
+Copyright (C) 2015 Analog Devices, Inc.
+Author: Paul Cercueil <[email protected]>
+
+This program is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+"""
 
-import iio
 from sys import argv
+import iio
+
 
 def main():
-	print('Library version: %u.%u (git tag: %s)' % iio.version)
+    """
+    Dump iio devices, list all iio attributes.
+    """
+    print("Library version: %u.%u (git tag: %s)" % iio.version)
+
+    if len(argv) == 3 and argv[1] == "--uri":
+        uri = argv[2]
+    else:
+        contexts = iio.scan_contexts()
+        if len(contexts) > 1:
+            print("Multiple contexts found. Please select one using --uri:")
+            for index, each in enumerate(contexts):
+                print("\t%d: %s [%s]" % (index, contexts[each], each))
+            return
 
-	if len(argv) == 3 and argv[1] == '--uri':
-		uri = argv[2]
-	else:
-		contexts = iio.scan_contexts()
-		if len(contexts) > 1:
-			print('Multiple contexts found. Please select one using --uri:')
-			for index, each in enumerate(contexts):
-				print('\t%d: %s [%s]' % (index, contexts[each], each))
-			return
+        uri = next(iter(contexts), None)
 
-		uri = next(iter(contexts), None)
+    ctx = iio.Context(uri)
 
-	ctx = iio.Context(uri)
+    if uri is not None:
+        print('Using auto-detected IIO context at URI "%s"' % uri)
 
-	if uri is not None:
-		print('Using auto-detected IIO context at URI \"%s\"' % uri)
+    print("IIO context created: " + ctx.name)
+    print("Backend version: %u.%u (git tag: %s)" % ctx.version)
+    print("Backend description string: " + ctx.description)
 
-	print('IIO context created: ' + ctx.name)
-	print('Backend version: %u.%u (git tag: %s)' % ctx.version)
-	print('Backend description string: ' + ctx.description)
+    if len(ctx.attrs) > 0:
+        print("IIO context has %u attributes:" % len(ctx.attrs))
+    for attr, value in ctx.attrs.items():
+        print("\t" + attr + ": " + value)
 
-	if len(ctx.attrs) > 0:
-		print('IIO context has %u attributes:' % len(ctx.attrs))
-	for attr, value in ctx.attrs.items():
-		print('\t' + attr + ': ' + value)
+    print("IIO context has %u devices:" % len(ctx.devices))
 
-	print('IIO context has %u devices:' % len(ctx.devices))
+    for dev in ctx.devices:
+        print("\t" + dev.id + ": " + dev.name)
 
-	for dev in ctx.devices:
-		print('\t' + dev.id + ': ' + dev.name)
+        if dev is iio.Trigger:
+            print("Found trigger! Rate: %u Hz" % dev.frequency)
 
-		if dev is iio.Trigger:
-			print('Found trigger! Rate: %u Hz' % dev.frequency)
+        print("\t\t%u channels found:" % len(dev.channels))
 
-		print('\t\t%u channels found:' % len(dev.channels))
+        for chn in dev.channels:
+            print(
+                "\t\t\t%s: %s (%s)"
+                % (chn.id, chn.name or "", "output" if chn.output else "input")
+            )
 
-		for chn in dev.channels:
-			print('\t\t\t%s: %s (%s)' % (chn.id, chn.name or "", 'output' if chn.output else 'input'))
+            if len(chn.attrs) != 0:
+                print("\t\t\t%u channel-specific attributes found:" % len(chn.attrs))
 
-			if len(chn.attrs) != 0:
-				print('\t\t\t%u channel-specific attributes found:' % len(chn.attrs))
+            for attr in chn.attrs:
+                try:
+                    print("\t\t\t\t" + attr + ", value: " + chn.attrs[attr].value)
+                except OSError as err:
+                    print("Unable to read " + attr + ": " + err.strerror)
 
-			for attr in chn.attrs:
-				try:
-					print('\t\t\t\t' + attr + ', value: ' + chn.attrs[attr].value)
-				except OSError as e:
-					print('Unable to read ' + attr + ': ' + e.strerror)
+        if len(dev.attrs) != 0:
+            print("\t\t%u device-specific attributes found:" % len(dev.attrs))
 
-		if len(dev.attrs) != 0:
-			print('\t\t%u device-specific attributes found:' % len(dev.attrs))
+        for attr in dev.attrs:
+            try:
+                print("\t\t\t" + attr + ", value: " + dev.attrs[attr].value)
+            except OSError as err:
+                print("Unable to read " + attr + ": " + err.strerror)
 
-		for attr in dev.attrs:
-			try:
-				print('\t\t\t' + attr + ', value: ' + dev.attrs[attr].value)
-			except OSError as e:
-				print('Unable to read ' + attr + ': ' + e.strerror)
+        if len(dev.debug_attrs) != 0:
+            print("\t\t%u debug attributes found:" % len(dev.debug_attrs))
 
-		if len(dev.debug_attrs) != 0:
-			print('\t\t%u debug attributes found:' % len(dev.debug_attrs))
+        for attr in dev.debug_attrs:
+            try:
+                print("\t\t\t" + attr + ", value: " + dev.debug_attrs[attr].value)
+            except OSError as err:
+                print("Unable to read " + attr + ": " + err.strerror)
 
-		for attr in dev.debug_attrs:
-			try:
-				print('\t\t\t' + attr + ', value: ' + dev.debug_attrs[attr].value)
-			except OSError as e:
-				print('Unable to read ' + attr + ': ' + e.strerror)
 
-if __name__ == '__main__':
-	main()
+if __name__ == "__main__":
+    main()