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db.py

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+"""
+
+代码功能：数据库链接与交互
+"""
+
+import pymysql
+import hashlib
+import Config as C
+
+global conn
+conn = None
+
+
+# 01获取数据库连接
+def conn_mysql():
+    conn = None
+    try:
+        conn = pymysql.connect(host=C.DB_HOST, port=3306, user=C.DB_USER, password=C.DB_PASSWORD, db=C.DB_NAME,
+                               charset='utf8')
+    except Exception as e:
+        print(e)
+    return conn
+
+
+# 02根据SQL语句操作数据库
+def sql_execute(sql):
+    global conn
+    if conn is None:
+        conn = conn_mysql()
+    cur = conn.cursor()
+    cur.execute(sql)
+    result = cur.fetchall()
+    cur.close()
+    return result
+
+
+# 03获取MD5加密结果
+def md5(text):
+    text = bytes(text, encoding='utf-8')
+    return hashlib.md5(text).hexdigest()
+
+
+if __name__ == "__main__":
+    str_md5 = md5("123456")
+    print('MD5加密后为 ：' + str_md5)