diff --git a/src/utils/config/loader_ftp_csv.py b/src/utils/config/loader_ftp_csv.py
index d81fd93..0c5c767 100644
--- a/src/utils/config/loader_ftp_csv.py
+++ b/src/utils/config/loader_ftp_csv.py
@@ -49,20 +49,20 @@ class Config:
         self.dbnodes = c.get("tables", "nodesTableName")
 
         # unit setting
-        self.units_name = [part for part in c.get("unit", "Names").split("|")]
-        self.units_type = [part for part in c.get("unit", "Types").split("|")]
+        self.units_name = list(c.get("unit", "Names").split("|"))
+        self.units_type = list(c.get("unit", "Types").split("|"))
         self.units_alias = {key: value for item in c.get("unit", "Alias").split("|") for key, value in [item.split(":", 1)]}
         # self.units_header = {key: int(value) for pair in c.get("unit", "Headers").split('|') for key, value in [pair.split(':')]}
 
         # tool setting
-        self.tools_name = [part for part in c.get("tool", "Names").split("|")]
-        self.tools_type = [part for part in c.get("tool", "Types").split("|")]
+        self.tools_name = list(c.get("tool", "Names").split("|"))
+        self.tools_type = list(c.get("tool", "Types").split("|"))
         self.tools_alias = {
             key: key if value == "=" else value for item in c.get("tool", "Alias").split("|") for key, value in [item.split(":", 1)]
         }
 
         # csv info
-        self.csv_infos = [part for part in c.get("csv", "Infos").split("|")]
+        self.csv_infos = list(c.get("csv", "Infos").split("|"))
 
         # TS pini path match
         self.ts_pini_path_match = {
diff --git a/src/utils/config/loader_matlab_elab.py b/src/utils/config/loader_matlab_elab.py
index 39ad905..1265f17 100644
--- a/src/utils/config/loader_matlab_elab.py
+++ b/src/utils/config/loader_matlab_elab.py
@@ -37,7 +37,7 @@ class Config:
         self.dbnodes = c.get("tables", "nodesTableName")
 
         # Tool
-        self.elab_status = [part for part in c.get("tool", "elab_status").split("|")]
+        self.elab_status = list(c.get("tool", "elab_status").split("|"))
 
         # Matlab
         self.matlab_runtime = c.get("matlab", "runtime")
diff --git a/src/utils/connect/file_management.py b/src/utils/connect/file_management.py
index 40d71ce..54f9b7c 100644
--- a/src/utils/connect/file_management.py
+++ b/src/utils/connect/file_management.py
@@ -42,7 +42,8 @@ def on_file_received(self: object, file: str) -> None:
                 tool_type = extract_value(cfg.tools_type, filename, str(lines[0:10]))
                 tool_info = "{}"
 
-                # se esiste l'alias in alias_unit_type, allora prende il valore dell'alias... verifica sia lo unit_type completo che i primi 3 caratteri per CO_xxxxx
+                # se esiste l'alias in alias_unit_type, allora prende il valore dell'alias
+                # verifica sia lo unit_type completo che i primi 3 caratteri per CO_xxxxx
                 upper_unit_type = unit_type.upper()
                 unit_type = cfg.units_alias.get(upper_unit_type) or cfg.units_alias.get(upper_unit_type[:3]) or upper_unit_type
                 upper_tool_type = tool_type.upper()
@@ -75,7 +76,9 @@ def on_file_received(self: object, file: str) -> None:
 
                 try:
                     cur.execute(
-                        f"INSERT INTO {cfg.dbname}.{cfg.dbrectable} (username, filename, unit_name, unit_type, tool_name, tool_type, tool_data, tool_info) VALUES (%s,%s, %s, %s, %s, %s, %s, %s)",
+                        f"""INSERT INTO {cfg.dbname}.{cfg.dbrectable}
+                        (username, filename, unit_name, unit_type, tool_name, tool_type, tool_data, tool_info)
+                        VALUES (%s,%s, %s, %s, %s, %s, %s, %s)""",
                         (
                             self.username,
                             new_filename,
diff --git a/src/utils/connect/send_data.py b/src/utils/connect/send_data.py
index 8595c80..6af374a 100644
--- a/src/utils/connect/send_data.py
+++ b/src/utils/connect/send_data.py
@@ -47,7 +47,6 @@ class FTPConnection:
 
 
 async def ftp_send_raw_csv_to_customer(cfg: dict, id: int, unit: str, tool: str, pool: object) -> bool:
-    None
     return True
 
 
diff --git a/src/utils/connect/user_admin.py b/src/utils/connect/user_admin.py
index 55ceb0c..8c831a7 100644
--- a/src/utils/connect/user_admin.py
+++ b/src/utils/connect/user_admin.py
@@ -46,7 +46,8 @@ def ftp_SITE_ADDU(self: object, line: str) -> None:
                 # Create a cursor
                 cur = conn.cursor()
                 cur.execute(
-                    f"INSERT INTO {cfg.dbname}.{cfg.dbusertable} (ftpuser, hash, virtpath, perm) VALUES ('{user}', '{hash}', '{cfg.virtpath + user}', '{cfg.defperm}')"
+                    f"""INSERT INTO {cfg.dbname}.{cfg.dbusertable} (ftpuser, hash, virtpath, perm)
+                        VALUES ('{user}', '{hash}', '{cfg.virtpath + user}', '{cfg.defperm}')"""
                 )
                 conn.commit()
                 conn.close()