# T-String Templates

URL: /docs/get-started/tstring-templates/
Section: get-started
Tags: tstrings, pep750

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T-String Templates Kida provides the k tag for Python 3.14's t-strings (PEP 750), giving you inline template rendering with automatic HTML escaping. Quick Example from kida import k name = "World" html = k(t"<h1>Hello, {name}!</h1>") print(html) # Output: <h1>Hello, World!</h1> Auto-Escaping The k tag escapes interpolated values by default, preventing XSS: from kida import k user_input = '<script>alert("xss")</script>' html = k(t"<p>Comment: {user_input}</p>") print(html) # Output: <p>Comment: <script>alert("xss")</script></p> Values that implement __html__() (like Kida's Markup class) are trusted and not double-escaped: from kida import k, Markup safe_html = Markup("<strong>bold</strong>") html = k(t"<p>{safe_html}</p>") print(html) # Output: <p><strong>bold</strong></p> When to Use Approach Best For k(t"...") Quick inline snippets, string building in Python code env.from_string(...) Dynamic templates with filters, control flow env.get_template(...) File-based templates, inheritance, caching T-strings are ideal when you need a few lines of safe HTML without loading a full template: from kida import k def render_badge(label: str, color: str) -> str: return k(t'<span class="badge badge-{color}">{label}</span>') def render_user_list(users: list[dict]) -> str: items = "".join( k(t"<li>{user['name']} ({user['email']})</li>") for user in users ) return k(t"<ul>{items}</ul>") Requirements T-strings require Python 3.14+ (PEP 750). On earlier Python versions, k is None and importing it will not raise an error, but calling it will. from kida import k if k is not None: html = k(t"Hello, {name}!") else: # Fallback for pre-3.14 from kida import Environment env = Environment() html = env.render_string("Hello, {{ name }}!", name=name) See Also Escaping — HTML escaping and the Markup class API Reference — Full k tag API

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