Set SIGPIPE to SIG_DFL in panxapi.py for consistency with panconf.py

and panwfapi.py.  This is needed on some systems when piping to
programs like head so we don't see BrokenPipeError.  Also handle
AttributeError for Windows which doesn't have SIGPIPE.

Author: kevinsteves

bin/panconf.py

@@ -31,7 +31,11 @@
 
 
 def main():
-    signal.signal(signal.SIGPIPE, signal.SIG_DFL)
+    try:
+        signal.signal(signal.SIGPIPE, signal.SIG_DFL)
+    except AttributeError:
+        # Windows
+        pass
 
     options = parse_opts()
 

bin/panwfapi.py

@@ -38,7 +38,12 @@
 
 
 def main():
-    signal.signal(signal.SIGPIPE, signal.SIG_DFL)
+    try:
+        signal.signal(signal.SIGPIPE, signal.SIG_DFL)
+    except AttributeError:
+        # Windows
+        pass
+
 #    set_encoding()
     options = parse_opts()
 

bin/panxapi.py

@@ -25,6 +25,7 @@
 import pprint
 import logging
 import ssl
+import signal
 
 libpath = os.path.dirname(os.path.abspath(__file__))
 sys.path[:0] = [os.path.join(libpath, os.pardir, 'lib')]
@@ -36,6 +37,12 @@
 
 
 def main():
+    try:
+        signal.signal(signal.SIGPIPE, signal.SIG_DFL)
+    except AttributeError:
+        # Windows
+        pass
+
     set_encoding()
     options = parse_opts()