contrib: bpf_inspect: adjust syntax for python < 3.12

Python 3.12 introduces the ability to nest the quote character within
f-strings. Previously, this was not allowed. While contrib scripts don't
have any specific requirement for code quality or compatibility, it
would be nice to make this runnable on Python versions prior to 3.12.

Signed-off-by: Stephen Brennan <[email protected]>

contrib/bpf_inspect.py

@@ -200,10 +200,10 @@ def list_bpf_progs(show_details=False):
                 print(f"\tlinked: {BpfProg(linked_prog)}")
 
         for map_ in bpf_prog.get_used_maps():
-            print(f"\t{"used map:":9} {map_}")
+            print(f"\t{'used map:':9} {map_}")
 
         for index, subprog in bpf_prog.get_subprogs():
-            print(f"\t{f"func[{index:>2}]:":9} {subprog}")
+            print(f"\t{f'func[{index:>2}]:':9} {subprog}")
 
 
 def __list_bpf_progs(args):
@@ -242,16 +242,16 @@ def __repr__(self):
         array = self.get_prog_array()
         poke_progs = self.get_poke_progs()
 
-        owner_str = f"{"owner:":9} {owner}" if owner else ""
+        owner_str = f"{'owner:':9} {owner}" if owner else ""
         array_str = (
             "\n\t".join(
-                f"{f"idx[{index:>3}]:":9} {BpfProg(prog)}" for index, prog in array
+                f"{f'idx[{index:>3}]:':9} {BpfProg(prog)}" for index, prog in array
             )
             if array
             else ""
         )
         poke_progs_str = (
-            "\n\t".join(f"{"poke:":9} {BpfProg(poke)}" for poke in poke_progs)
+            "\n\t".join(f"{'poke:':9} {BpfProg(poke)}" for poke in poke_progs)
             if poke_progs
             else ""
         )
@@ -345,7 +345,7 @@ def __repr__(self):
         mode = self.get_mode()
 
         ifname, ifindex = dev.name.string_().decode(), dev.ifindex.value_()
-        return f"{"netdev:":<9} {ifname}({ifindex})" + f"\n\t{"mode:":<9} {mode}"
+        return f"{'netdev:':<9} {ifname}({ifindex})" + f"\n\t{'mode:':<9} {mode}"
 
 
 def show_bpf_link_details(link):