bindings: python: examples: check if '__main__' is set

The examples are programs meant to be executed directly and not
imported. Use the standard "if __name__ == '__main__':" before
any code.

Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>

diff --git a/bindings/python/examples/gpiodetect.py b/bindings/python/examples/gpiodetect.py
index f539f04ccd0b6d92b97296412cd11e95b3f7b5db..9318f51942e4458a899d6d5d43f76e7c8a2b7b27 100755 (executable)
--- a/bindings/python/examples/gpiodetect.py
+++ b/bindings/python/examples/gpiodetect.py
@@ -11,8 +11,9 @@
 
 import gpiod
 
-for chip in gpiod.ChipIter():
-    print('{} [{}] ({} lines)'.format(chip.name(),
-                                      chip.label(),
-                                      chip.num_lines()))
-    chip.close()
+if __name__ == '__main__':
+    for chip in gpiod.ChipIter():
+        print('{} [{}] ({} lines)'.format(chip.name(),
+                                          chip.label(),
+                                          chip.num_lines()))
+        chip.close()

diff --git a/bindings/python/examples/gpiofind.py b/bindings/python/examples/gpiofind.py
index 30b8e2bb96f0e0ed6066d1cd68813d597d56aea9..8505ba020e02541d541c726072a00f4a70df257a 100755 (executable)
--- a/bindings/python/examples/gpiofind.py
+++ b/bindings/python/examples/gpiofind.py
@@ -12,9 +12,10 @@
 import gpiod
 import sys
 
-line = gpiod.find_line(sys.argv[1])
-if line is None:
-    sys.exit(1)
+if __name__ == '__main__':
+    line = gpiod.find_line(sys.argv[1])
+    if line is None:
+        sys.exit(1)
 
-print('{} {}'.format(line.owner().name(), line.offset()))
-line.owner().close()
+    print('{} {}'.format(line.owner().name(), line.offset()))
+    line.owner().close()

diff --git a/bindings/python/examples/gpioget.py b/bindings/python/examples/gpioget.py
index bc7645b46391ed0e60bf31febbb87e3782ef3464..bdff23dc86ac44780c84a6619ee9b38b7c3f4abb 100755 (executable)
--- a/bindings/python/examples/gpioget.py
+++ b/bindings/python/examples/gpioget.py
@@ -12,18 +12,19 @@
 import gpiod
 import sys
 
-if len(sys.argv) < 3:
-    raise TypeError('usage: gpioget.py <gpiochip> <offset1> <offset2> ...')
+if __name__ == '__main__':
+    if len(sys.argv) < 3:
+        raise TypeError('usage: gpioget.py <gpiochip> <offset1> <offset2> ...')
 
-with gpiod.Chip(sys.argv[1]) as chip:
-    offsets = []
-    for off in sys.argv[2:]:
-        offsets.append(int(off))
+    with gpiod.Chip(sys.argv[1]) as chip:
+        offsets = []
+        for off in sys.argv[2:]:
+            offsets.append(int(off))
 
-    lines = chip.get_lines(offsets)
-    lines.request(consumer=sys.argv[0], type=gpiod.LINE_REQ_DIR_IN)
-    vals = lines.get_values()
+        lines = chip.get_lines(offsets)
+        lines.request(consumer=sys.argv[0], type=gpiod.LINE_REQ_DIR_IN)
+        vals = lines.get_values()
 
-    for val in vals:
-        print(val, end=' ')
-    print()
+        for val in vals:
+            print(val, end=' ')
+        print()

diff --git a/bindings/python/examples/gpioinfo.py b/bindings/python/examples/gpioinfo.py
index f9d91bfefff111ecb45920043c66ba55ef1d8d73..de4b6f33720c735b3c2145f3c2425aadc46e37e3 100755 (executable)
--- a/bindings/python/examples/gpioinfo.py
+++ b/bindings/python/examples/gpioinfo.py
@@ -11,21 +11,22 @@
 
 import gpiod
 
-for chip in gpiod.ChipIter():
-    print('{} - {} lines:'.format(chip.name(), chip.num_lines()))
+if __name__ == '__main__':
+    for chip in gpiod.ChipIter():
+        print('{} - {} lines:'.format(chip.name(), chip.num_lines()))
 
-    for line in gpiod.LineIter(chip):
-        offset = line.offset()
-        name = line.name()
-        consumer = line.consumer()
-        direction = line.direction()
-        active_state = line.active_state()
+        for line in gpiod.LineIter(chip):
+            offset = line.offset()
+            name = line.name()
+            consumer = line.consumer()
+            direction = line.direction()
+            active_state = line.active_state()
 
-        print('\tline {:>3}: {:>18} {:>12} {:>8} {:>10}'.format(
-                offset,
-                'unnamed' if name is None else name,
-                'unused' if consumer is None else consumer,
-                'input' if direction == gpiod.Line.DIRECTION_INPUT else 'output',
-                'active-low' if active_state == gpiod.Line.ACTIVE_LOW else 'active-high'))
+            print('\tline {:>3}: {:>18} {:>12} {:>8} {:>10}'.format(
+                    offset,
+                    'unnamed' if name is None else name,
+                    'unused' if consumer is None else consumer,
+                    'input' if direction == gpiod.Line.DIRECTION_INPUT else 'output',
+                    'active-low' if active_state == gpiod.Line.ACTIVE_LOW else 'active-high'))
 
-    chip.close()
+        chip.close()

diff --git a/bindings/python/examples/gpiomon.py b/bindings/python/examples/gpiomon.py
index 2615f4a36449d7098e7933580b6213b0aba0d2eb..1c561763777d6ff589a73d006f9d5291c271e590 100755 (executable)
--- a/bindings/python/examples/gpiomon.py
+++ b/bindings/python/examples/gpiomon.py
@@ -12,35 +12,36 @@
 import gpiod
 import sys
 
-def print_event(event):
-    if event.type == gpiod.LineEvent.RISING_EDGE:
-        evstr = ' RISING EDGE'
-    elif event.type == gpiod.LineEvent.FALLING_EDGE:
-        evstr = 'FALLING EDGE'
-    else:
-        raise TypeError('Invalid event type')
-
-    print('event: {} offset: {} timestamp: [{}.{}]'.format(evstr,
-                                                           event.source.offset(),
-                                                           event.sec, event.nsec))
-
-if len(sys.argv) < 3:
-    raise TypeError('usage: gpiomon.py <gpiochip> <offset1> <offset2> ...')
-
-with gpiod.Chip(sys.argv[1]) as chip:
-    offsets = []
-    for off in sys.argv[2:]:
-        offsets.append(int(off))
-
-    lines = chip.get_lines(offsets)
-    lines.request(consumer=sys.argv[0], type=gpiod.LINE_REQ_EV_BOTH_EDGES)
-
-    try:
-        while True:
-            ev_lines = lines.event_wait(sec=1)
-            if ev_lines:
-                for line in ev_lines:
-                    event = line.event_read()
-                    print_event(event)
-    except KeyboardInterrupt:
-        sys.exit(130)
+if __name__ == '__main__':
+    def print_event(event):
+        if event.type == gpiod.LineEvent.RISING_EDGE:
+            evstr = ' RISING EDGE'
+        elif event.type == gpiod.LineEvent.FALLING_EDGE:
+            evstr = 'FALLING EDGE'
+        else:
+            raise TypeError('Invalid event type')
+
+        print('event: {} offset: {} timestamp: [{}.{}]'.format(evstr,
+                                                               event.source.offset(),
+                                                               event.sec, event.nsec))
+
+    if len(sys.argv) < 3:
+        raise TypeError('usage: gpiomon.py <gpiochip> <offset1> <offset2> ...')
+
+    with gpiod.Chip(sys.argv[1]) as chip:
+        offsets = []
+        for off in sys.argv[2:]:
+            offsets.append(int(off))
+
+        lines = chip.get_lines(offsets)
+        lines.request(consumer=sys.argv[0], type=gpiod.LINE_REQ_EV_BOTH_EDGES)
+
+        try:
+            while True:
+                ev_lines = lines.event_wait(sec=1)
+                if ev_lines:
+                    for line in ev_lines:
+                        event = line.event_read()
+                        print_event(event)
+        except KeyboardInterrupt:
+            sys.exit(130)

diff --git a/bindings/python/examples/gpioset.py b/bindings/python/examples/gpioset.py
index efc11f20f511e54592bb45899afa76d326975e44..3e7b1211c9e1632676d7928d99c8a4c0e26669db 100755 (executable)
--- a/bindings/python/examples/gpioset.py
+++ b/bindings/python/examples/gpioset.py
@@ -12,18 +12,19 @@
 import gpiod
 import sys
 
-if len(sys.argv) < 3:
-    raise TypeError('usage: gpioset.py <gpiochip> <offset1>=<value1> ...')
+if __name__ == '__main__':
+    if len(sys.argv) < 3:
+        raise TypeError('usage: gpioset.py <gpiochip> <offset1>=<value1> ...')
 
-with gpiod.Chip(sys.argv[1]) as chip:
-    offsets = []
-    values = []
-    for arg in sys.argv[2:]:
-        arg = arg.split('=')
-        offsets.append(int(arg[0]))
-        values.append(int(arg[1]))
+    with gpiod.Chip(sys.argv[1]) as chip:
+        offsets = []
+        values = []
+        for arg in sys.argv[2:]:
+            arg = arg.split('=')
+            offsets.append(int(arg[0]))
+            values.append(int(arg[1]))
 
-    lines = chip.get_lines(offsets)
-    lines.request(consumer=sys.argv[0], type=gpiod.LINE_REQ_DIR_OUT)
-    lines.set_values(values)
-    input()
+        lines = chip.get_lines(offsets)
+        lines.request(consumer=sys.argv[0], type=gpiod.LINE_REQ_DIR_OUT)
+        lines.set_values(values)
+        input()