Unable to insert values to mysql using python

Question

I am trying to insert values to mysql using python but the code is not working, its returning a blank page & no values written in database table, Please help me

import MySQLdb as mdb

con = mdb.connect('localhost', 'python', '123456', 'python');

cur = con.cursor()

cur.execute("INSERT INTO test VALUES('234','566789','rohan','rajesh','78979','Maths','25','50','75','P')")
cur.commit()

cur.close()
con.close()

Answer 1

Try this instead:

import MySQLdb as mdb

con = mdb.connect(host='localhost', user='python', passwd='123456', db='python');

cur = con.cursor()
cur.execute("INSERT INTO test(ecode) VALUES('Manoj')")
cur.execute("INSERT INTO test(htno) VALUES('Manoj')")
cur.execute("INSERT INTO test(name) VALUES('Manoj')")
cur.execute("INSERT INTO test(fathername) VALUES('Manoj')")
cur.execute("INSERT INTO test(subcode) VALUES('Manoj')")
cur.execute("INSERT INTO test(subject) VALUES('Manoj')")
cur.execute("INSERT INTO test(internals) VALUES('Manoj')")
cur.execute("INSERT INTO test(externals) VALUES('Manoj')")
cur.execute("INSERT INTO test(total) VALUES('Manoj')")
cur.execute("INSERT INTO test(result) VALUES('Manoj')")

cur.commit()

cursor.close()
con.close()

There were several problems:

• undefined python variable
• undefined success variable
• context managers are not supported by MySQLdb

Though, I don't understand why do you need to insert rows with Manoj value in different fields.

UPD, you have an error in your sql syntax (missing quote char before 566789 ):

cur.execute("INSERT INTO test VALUES('234','566789','rohan','rajesh','78979','Maths','25','50','75','P')")

Hope that helps.

Answer 2

Your Python string must be exactly as in a normal MySQL statement, so a good idea is to try executing it at the MySQL prompt to see what it returns. Without specifying the fields eg

INSERT INTO FOO VALUES (4, 5, 6)

instead of

INSERT INTO FOO (X, Y, Z) VALUES (4, 5, 6)

will insert values in the order they are defined in the table (as shown using the DESCRIBE command) but is generally not a good idea in case for example the layout of the table changes.

You need to ensure that all your strings have opening and closing quotes - your 566789 string doesn't in the example you have given. Also you are passing what appear to be integers as strings. If they are defined as integers in the table you will need to remove the quotes.

Hope this helps.