power_sequencer: fix invalid identity checks

power_sequencer/scripts/BPSProxy/bpsproxy/commands.py

@@ -186,5 +186,5 @@ def get_commands_vi(cfg, clargs, **kwargs):
     An iterator with the 1st element as a tag (the `what` parameter) and the 2nd
     element as the iterator of the actual commands.
     """
-    ws = filter(lambda x: x is not "all", cfg["extensions"])
+    ws = filter(lambda x: x != "all", cfg["extensions"])
     return chain.from_iterable(map(lambda w: get_commands(cfg, clargs, what=w, **kwargs), ws))

power_sequencer/scripts/BPSProxy/bpsproxy/utils.py

@@ -36,7 +36,7 @@ def checktools(tools):
         msg = ["BPSProxy couldn't find external dependencies:"]
         msg += [
             "[{check}] {tool}: {path}".format(
-                check="v" if path is not "" else "X", tool=tool, path=path or "NOT FOUND"
+                check="v" if path != "" else "X", tool=tool, path=path or "NOT FOUND"
             )
             for tool, path in check["tools"]
         ]

power_sequencer/scripts/BPSRender/bpsrender/helpers.py

@@ -41,7 +41,7 @@ def checktools(tools):
         msg = ["BPSRender couldn't find external dependencies:"]
         msg += [
             "[{check}] {tool}: {path}".format(
-                check="v" if path is not "" else "X", tool=tool, path=path or "NOT FOUND"
+                check="v" if path != "" else "X", tool=tool, path=path or "NOT FOUND"
             )
             for tool, path in check["tools"]
         ]