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Python 3.14 Introduces Template Strings: Safer String Processing Beyond f-strings

2025-04-10

Python 3.14 introduces template strings (t-strings), extending f-strings to allow developers to access and transform values before string interpolation. This prevents security vulnerabilities like SQL injection and XSS. T-strings resolve to a new `Template` object containing string parts and interpolation expressions, enabling custom processing such as HTML sanitization and structured logging. This enhancement provides Python with more flexible and secure string handling and opens new possibilities for building sophisticated DSLs and templating engines.

Python Launcher Gains Virtual Environment Support

2025-02-22

The Windows installer for Python includes a launcher to locate the correct Python interpreter. However, it previously lacked virtual environment support. PEP 486 proposes making the launcher 'virtualenv aware'. This means that when no specific interpreter is given, the launcher will prioritize the currently active virtualenv, falling back to the default Python if none is active. This simplifies running Python commands within virtual environments, avoiding the need for different commands in different contexts.

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