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Python: Create a SQLite database connection to a database that resides in the memory

Python SQLite Database: Exercise-2 with Solution

Write a Python program to create a SQLite database connection to a database that resides in the memory.

Sample Solution:

Python Code :

import sqlite3
try:
   sqlite_Connection = sqlite3.connect('temp.db')
   conn = sqlite3.connect(':memory:')
   print("\nMemory database created and connected to SQLite.")
   sqlite_select_Query = "select sqlite_version();"
   conn.execute(sqlite_select_Query)
   print("\nSQLite Database Version is: ", sqlite3.version)
   conn.close()
except sqlite3.Error as error:
   print("\nError while connecting to sqlite", error)
finally:
   if (sqlite_Connection):
       sqlite_Connection.close()
       print("\nThe SQLite connection is closed.")

Sample Output:

Memory database created and connected to SQLite.

SQLite Database Version is:  2.6.0

The SQLite connection is closed.

Python Code Editor:

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Previous: Write a Python program to create a SQLite database and connect with the database and print the version of the SQLite database.
Next: Write a Python program to connect a database and create a SQLite table within the database.

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Python: Tips of the Day

How to make a chain of function decorators?

from functools import wraps

def makebold(fn):
    @wraps(fn)
    def wrapped(*args, **kwargs):
        return "<b>" + fn(*args, **kwargs) + "</b>"
    return wrapped

def makeitalic(fn):
    @wraps(fn)
    def wrapped(*args, **kwargs):
        return "<i>" + fn(*args, **kwargs) + "</i>"
    return wrapped

@makebold
@makeitalic
def hello():
    return "hello world"

@makebold
@makeitalic
def log(s):
    return s

print hello()        # returns "<b><i>hello world</i></b>"
print hello.__name__ # with functools.wraps() this returns "hello"
print log('hello')   # returns "<b><i>hello</i></b>"

Ref: https://bit.ly/3cVz5iw