Python itself does not directly handle SQL injection vulnerabilities; it's up to the developer to use safe coding practices. SQL injection is a security flaw where an attacker can manipulate a SQL query by injecting malicious SQL code through user inputs. This can compromise the database and potentially the entire system.

To prevent SQL injection in Python, developers should use parameterized queries or prepared statements, which allow the database to distinguish between code and data. This approach ensures that user inputs are treated as data and not executable SQL commands. For example, when using SQLite3 in Python, you can safely execute a query by using placeholders:

import sqlite3

connection = sqlite3.connect('example.db')
cursor = connection.cursor()

Safe way to include user input in SQL query

userid = 1
cursor.execute('SELECT * FROM users WHERE id = ?', (userid,))
results = cursor.fetchall()
```

In the example above, the ? placeholder is used, and the user input is passed as a tuple, preventing any potential SQL injection.

Additionally, using Object-Relational Mapping (ORM) libraries like SQLAlchemy or Django ORM can further reduce the risk, as they abstract the database interactions and inherently handle SQL injections by design.

Understanding these practices and implementing them correctly is crucial for secure application development. For a comprehensive understanding and to become proficient, consider enrolling in a python certification course.