Here write four main functions, additions and deletions to check
The following is the style of the target database, the database: testpy, the data table: movie1, (misspelled not changed, Zhu), there are four fields, id is the primary key.
Charles, the following example to add a function name is ready to run
1 #查select 2 def select(): 3 #创建connection连接 4 conn = pymysql.connect( 5 host = 'localhost', 6 port = 3306, 7 user = 'root', 8 password = 'mysql_123456', 9 database = 'testpy', 10 charset = 'utf8' 11 ) 12 # obtain cursor object 13 is cursor = conn.cursor () 14 #sql statement 15 SQL = " SELECT daoyan, dizhi, mingzi from MOVIE1 WHERE daoyan = 'NA'; " 16 # execute the statement . 17 the cursor.execute (SQL) 18 is # Get query data . 19 #RET = cursor.fetchone () 20 is #RET cursor.fetchmany = ( . 3 ) 21 is RET = cursor.fetchall () 22 is # close the object, connection 23 is cursor.close () 24 conn.Close () 25 # print the results 26 for i in ret: 27 print(i)
increase
1 #增：insert 2 def insert(): 3 #创建connection连接 4 conn = pymysql.connect( 5 host = 'localhost', 6 port = 3306, 7 user = 'root', 8 password = 'mysql_123456', 9 database = 'testpy', 10 charset = 'utf8' 11 ) 12 # Obtain a cursor object 13 cursor = conn.cursor () 14 #sql statement 15 SQL = " INSERT INTO MOVIE1 values ( '0', 'Luke', 'HTTP: //www.luke.com', 'your sister') ; " 16 # execute the statement . 17 the cursor.execute (SQL) 18 is # commit the transaction . 19 conn.commit () 20 is last_id = cursor.lastrowid 21 is # id number returned insert 22 is Print (last_id) 23 is # close the object, connection 24 Cursor. use Close () 25 conn.Close ()
delete
1 #删：delete 2 def delete(): 3 #创建connection连接 4 conn = pymysql.connect( 5 host = 'localhost', 6 port = 3306, 7 user = 'root', 8 password = 'mysql_123456', 9 database = 'testpy', 10 charset = 'utf8' 11 ) 12 # Obtain cursor object 13 is cursor = conn.cursor () 14 #sql statement 15 SQL = " Delete from MOVIE1 WHERE ID = 149; " 16 # execute the statement . 17 the cursor.execute (SQL) 18 is # commit the transaction . 19 conn.commit () 20 # close objects, the connection 21 is cursor.close () 22 is conn.Close ()
change
1 #改：update 2 def update(): 3 #创建connection连接 4 conn = pymysql.connect( 5 host = 'localhost', 6 port = 3306, 7 user = 'root', 8 password = 'mysql_123456', 9 database = 'testpy', 10 charset = 'utf8' 11 ) 12 # Obtain cursor object 13 is cursor = conn.cursor () 14 #sql statement 15 SQL = " Update MOVIE1 SET daoyan = 'Luke' WHERE ID = 2; " 16 # execute the statement . 17 the cursor.execute (SQL) 18 is # commit the transaction 19 conn.commit () 20 is # close the object, connection 21 is cursor.close () 22 is conn.Close ()
The above four functions written in a py in, you can call the function, it uses its own backup.