All variables inside the main if-structure are global that can be
confusing or be the reason of an issue. So, all code inside this structure
was moved to the separate function to detect all usages of these global
variables. All these usages were deleted.

Also Configuration._qemu_args was removed as unused.

Signed-off-by: Maksim Davydov <davydov-max@yandex-team.ru>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
---
 scripts/compare-machine-types.py | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/scripts/compare-machine-types.py b/scripts/compare-machine-types.py
index 96ee7e9ee6..5dfaafef89 100755
--- a/scripts/compare-machine-types.py
+++ b/scripts/compare-machine-types.py
@@ -264,7 +264,6 @@ def __init__(self, vm: QEMUMachine,
                  req_mt: List[str], all_mt: bool) -> None:
         self._vm = vm
         self._binary = vm.binary
-        self._qemu_args = args.qemu_args.split(' ')
 
         self._qemu_drivers = VMPropertyGetter(vm)
         self.req_mt = get_req_mt(self._qemu_drivers, vm, req_mt, all_mt)
@@ -482,17 +481,17 @@ def fill_prop_table(configs: List[Configuration],
 
 def print_table(table: pd.DataFrame, table_format: str) -> None:
     if table_format == 'json':
-        print(comp_table.to_json())
+        print(table.to_json())
     elif table_format == 'csv':
-        print(comp_table.to_csv())
+        print(table.to_csv())
     else:
-        print(comp_table.to_markdown(index=False, stralign='center',
-                                     colalign=('center',), headers='keys',
-                                     tablefmt='fancy_grid',
-                                     disable_numparse=True))
+        print(table.to_markdown(index=False, stralign='center',
+                                colalign=('center',), headers='keys',
+                                tablefmt='fancy_grid',
+                                disable_numparse=True))
 
 
-if __name__ == '__main__':
+def main() -> None:
     args = parse_args()
     with ExitStack() as stack:
         vms = [stack.enter_context(QEMUMachine(binary=binary, qmp_timer=15,
@@ -506,3 +505,7 @@ def print_table(table: pd.DataFrame, table_format: str) -> None:
         comp_table = fill_prop_table(configurations, args.raw)
         if not comp_table.empty:
             print_table(comp_table, args.format)
+
+
+if __name__ == '__main__':
+    main()
-- 
2.34.1