проверка существования файла

.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>

megacli_parser/megacli_parse.py

@@ -148,12 +148,18 @@ def f_get_ld_val(num, val, source):
 if __name__ == '__main__':
     if len(sys.argv) == 1 or len(sys.argv) == 3 or len(sys.argv) > 4:
         print("Wrong args. Cache will be updated if necessary")
-    stat_pd = os.stat(pd_file)
-    stat_ld = os.stat(ld_file)
-    if (float(time.time()) - float(stat_pd.st_ctime)) > 50:
+    if not os.path.exists(pd_file):
         f_read_cli(pd_cmd, pd_file)
-    if (float(time.time()) - float(stat_ld.st_ctime)) > 50:
+    else:
+        stat_pd = os.stat(pd_file)
+        if (float(time.time()) - float(stat_pd.st_ctime)) > 50:
+            f_read_cli(pd_cmd, pd_file)
+    if not os.path.exists(ld_file):
         f_read_cli(ld_cmd, ld_file)
+    else:
+        stat_ld = os.stat(ld_file)
+        if (float(time.time()) - float(stat_ld.st_ctime)) > 50:
+            f_read_cli(ld_cmd, ld_file)
 
     if len(sys.argv) == 2:
         if sys.argv[1] == "ld":