Create a function in Python which creates a mySQL database
I've created a program in python and mySQL which creates a database and imports the data from text files and puts them into 4 different columns. The code works but I want to change the code and create functions.
Can anyone please help me create a function that creates a mySQL database? Here is the code I have at the moment. Thanks in advance!
import MySQLdb
# Create connection to the MySQL database - Make sure host, user,
# passwd are consistent with the database you are trying to conect to
def create_database():
db_connection = MySQLdb.connect(host='localhost', user='root', passwd='password')
# Variable that exacutes Database calls with MySQL
cursor = db_connection.cursor()
# Create databse with MYSQL query - databasename
cursor.execute('CREATE DATABASE inb104')
# Select which database to use with MYSQL query - databasename
cursor.execute('USE inb104')
# Create database with MYSQL query - tablename & fields
cursor.execute('''CREATE TABLE popularity (
PersonNumber INT,
Value VARCHAR(70),
Category VARCHAR(25),
PRIMARY KEY (PersonNumber, Value, Category)
)
''')
cursor.execute("LOAD DATA LOCAL INFILE 'tv.txt' INTO TABLE popularity FIELDS TERMINATED BY '\\t' LINES TERMINATED BY '\\n' (PersonNumber, Value, Category) SET Category='TV'")
cursor.execute("LOAD DATA LOCAL INFILE 'actors.txt' INTO TABLE popularity FIELDS TERMINATED BY '\\t' LINES TERMINATED BY '\\n' (PersonNumber, Value, Category) SET Category='Actors'")
cursor.execute("LOAD DATA LOCAL INFILE 'movies.txt' INTO TABLE popularity FIELDS TERMINATED BY '\\t' LINES TERMINATED BY '\\n' (PersonNumber, Value, Category) SET Category='Movies'")
cursor.execute("LOAD DATA LOCAL INFILE 'sports.txt' INTO TABLE popularity FIELDS TERMINATED BY '\\t' LINES TERMINATED BY '\\n' (PersonNumber, Value, Category) SET Category='Sports'")
cursor.execute("LOAD DATA LOCAL INFILE 'activi开发者_Go百科ties.txt' INTO TABLE popularity FIELDS TERMINATED BY '\\t' LINES TERMINATED BY '\\n' (PersonNumber, Value, Category) SET Category='Activities'")
cursor.execute("LOAD DATA LOCAL INFILE 'musicians.txt' INTO TABLE popularity FIELDS TERMINATED BY '\\t' LINES TERMINATED BY '\\n' (PersonNumber, Value, Category) SET Category='Musicians'")
cursor.execute("LOAD DATA LOCAL INFILE 'games.txt' INTO TABLE popularity FIELDS TERMINATED BY '\\t' LINES TERMINATED BY '\\n' (PersonNumber, Value, Category) SET Category='Games'")
cursor.execute("LOAD DATA LOCAL INFILE 'books.txt' INTO TABLE popularity FIELDS TERMINATED BY '\\t' LINES TERMINATED BY '\\n' (PersonNumber, Value, Category) SET Category='Books'")
# commit the changes to the database
db_connection.commit()
# close the cursor and connection
cursor.close()
db_connection.close()
Okay, this is what I have so far.
I'm getting this error: TypeError: data_entry() takes no arguments (1 given)
And, the data also isn't being inserted into the table from the text files. Any help would be greatly appreciated!!
import MySQLdb
def connect_to_database(user, password):
return MySQLdb.connect(host='localhost', user=user, passwd=password)
def create_database(cursor):
cursor.execute('CREATE DATABASE inb104')
cursor.execute('USE inb104')
cursor.execute('''CREATE TABLE popularity (
PersonNumber INT,
Value VARCHAR(70),
Category VARCHAR(25),
PRIMARY KEY (PersonNumber, Value, Category)
)
''')
def load_file(cursor, *files):
"""Load the files given in (filename, category) format."""
sql = '''LOAD DATA LOCAL INFILE '%s' INTO TABLE popularity
FIELDS TERMINATED BY '\\t'
LINES TERMINATED BY '\\n'
(PersonNumber, Value, Category)
SET Category='%s'")
'''
for filename, category in files:
cursor.execute(sql, (filename, category))
def data_entry():
"""Connect to the DB server, create the DB and table and load the table with records
"""
db = connect_to_database('root', 'password')
cursor = db.cursor()
create_database(cursor)
load_files(cursor,('tv.txt', 'TV'), ('actors.txt', 'Actors'),
('movies.txt', 'Movies'))
db.commit()
cursor.close()
db.close()
Your sql for loading data should be
sql = '''LOAD DATA LOCAL INFILE %s INTO TABLE popularity
FIELDS TERMINATED BY ';'
LINES TERMINATED BY '\\n'
(PersonNumber, Value, Category)
SET Category=%s
'''
+ %s --> '%s'
+ remove " at the end
It should work. Besides, load_files --> load_file
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