把db和main放在一个目录下。

db.py

@@ -0,0 +1,25 @@
+from peewee import *
+
+mysql_db = MySQLDatabase(
+    "vps", user="dmy", password="abc123+_", host="192.168.1.130", port=3306
+)
+
+
+def get_latest_speed():
+    cursor =mysql_db.execute_sql(
+        "select distinct server from vps_download_speed where datetime between date_sub(now(),INTERVAL 2 day) and now()"
+    )
+    all_servers=cursor.fetchall()
+    server_latest_speed_dic={}
+    for server in all_servers[0]:
+        cursor = mysql_db.execute_sql(
+            "select speed from vps_download_speed where server='{server}'order by id DESC limit 1".format(server=server)
+        )
+        server_latest_speed_dic[server]={}
+        speed_dic=server_latest_speed_dic[server]
+        speed_dic['speed']=cursor.fetchone()[0]
+    return server_latest_speed_dic
+
+
+if __name__=='__main__':
+    print(get_latest_speed())