Python equivalent of PHP mysql_fetch_array

Question

I would like to fetch an array in MySQL. Can someone please tell me how to use Python using MySQLdb to do so?

For example, this is what I would like to do in Python:

<?php
 require_once('Config.php'); 
 $q = mysql_query("SELECT * FROM users WHERE firstname = 'namehere'");
 $data = mysql_fetch_array($q);
 echo $data['lastname'];
?>

Thanks.

Answer 1

In python you have dictionary=True, I have tested in python3. This returns directory which is much similar to associative array in php. eg.

import mysql.connector
cnx = mysql.connector.connect(user='root', password='',host='127.0.0.1',database='test1')
cursor = cnx.cursor(dictionary=True)
sql= ("SELECT * FROM `users` WHERE id>0")
cursor.execute(sql)
results = cursor.fetchall()
print(results)

• Jingshao Chen: dev.mysql.com/doc/connector-python/en/…

Answer 2

You can use this (dictionary=True):

import mysql.connector
db = mysql.connector.connect(user='root', password='',host='127.0.0.1', database='test1')
cursor = db.cursor(dictionary=True)
cursor.execute("SELECT * FROM table")
for row in cursor:
 print(row['column'])

Answer 3

1. Install MySQLdb (the drivers for MySQL for Python). Type pip install mysql-python
2. Read up on the Python DB API, which is the standard way to access databases in Python.

Then, try this:

>>> import MySQLdb
>>> connection = MySQLdb.connect(database='test')
>>> cursor = connection.cursor()
>>> cursor.execute('SELECT * FROM users WHERE firstname = %s',('somename',))
>>> results = cursor.fetchall()
>>> for i in results:
 print i

• tadman: It is worrying this is the only answer with some form of SQL escaping.
• Austin K: Thank you for your help! I just have one more question. When I use this, data is returned in this format: (('dave',), ('jake',)). How can I edit the format of this data, so it is like this ('dave', 'jake'). I am looping through the data that is returned and using each as a variable. This would be much easier to manipulate for my purpose. Thanks again.
• Burhan Khalid: names = [i[0] for i in cursor.fetchall()]

Answer 4

I would use SQLAlchemy. Something like this would do the trick:

engine = create_engine('mysql://username:password@host:port/database')
connection = engine.connect()
result = connection.execute("select username from users")
for row in result:
 print "username:", row['username']
connection.close()

Answer 5

Try:

import MySQLdb
connection = MySQLdb.connect(host="localhost", # your host
 user="root", # username
 passwd="password", # password
 db="frateData") # name of the database)
cursor = connection.cursor(MySQLdb.cursors.DictCursor)
cursor.execute('SELECT * FROM users WHERE firstname = %s',['namehere'])
data = cursor.fetchall()
print data['lastname']

Please note that by initiating your cursor by passing the following parameter: "MySQLdb.cursors.DictCursor" a list instead of an array is returned so you can reference the data with their key name, which in your case in lastname.