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README.md

Datastar Python SDK Examples

Running Examples with uv

All examples (except Django) include Inline Script Metadata (PEP 723), allowing them to be run with uv without first installing dependencies.

General Instructions

Navigate to the specific example directory and run:

uv run <script-name>

For example:

  • cd examples/fastapi && uv run app.py
  • cd examples/fasthtml && uv run simple.py
  • cd examples/sanic && uv run app.py

Django

The Django example has its own pyproject.toml with dependencies. Navigate to the Django directory and run:

uv run manage.py runserver

Alternative: Running with pip

If you prefer using pip, you can create a virtual environment and install the dependencies listed in each script's metadata comments manually:

python -m venv .venv
source .venv/bin/activate # On Windows: .venv\Scripts\activate
pip install datastar-py <other-dependencies-from-script>
python <script-name>

Refer to the # dependencies = [...] section at the top of each example script to see what packages to install.

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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README.md
Datastar Python SDK Examples
Running Examples with uv
All examples (except Django) include Inline Script Metadata (PEP 723), allowing them to be run with uv without first installing dependencies.
General Instructions
Navigate to the specific example directory and run:
uv run <script-name>
For example:
  • cd examples/fastapi && uv run app.py
  • cd examples/fasthtml && uv run simple.py
  • cd examples/sanic && uv run app.py
Django
The Django example has its own pyproject.toml with dependencies. Navigate to the Django directory and run:
uv run manage.py runserver
Alternative: Running with pip
If you prefer using pip, you can create a virtual environment and install the dependencies listed in each script's metadata comments manually:
python -m venv .venv
source .venv/bin/activate # On Windows: .venv\Scripts\activate
pip install datastar-py <other-dependencies-from-script>
python <script-name>
Refer to the # dependencies = [...] section at the top of each example script to see what packages to install.

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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README.md
README.md
Datastar Python SDK Examples
Running Examples with uv
All examples (except Django) include Inline Script Metadata (PEP 723), allowing them to be run with uv without first installing dependencies.
General Instructions
Navigate to the specific example directory and run:
uv run <script-name>
For example:
  • cd examples/fastapi && uv run app.py
  • cd examples/fasthtml && uv run simple.py
  • cd examples/sanic && uv run app.py
Django
The Django example has its own pyproject.toml with dependencies. Navigate to the Django directory and run:
uv run manage.py runserver
Alternative: Running with pip
If you prefer using pip, you can create a virtual environment and install the dependencies listed in each script's metadata comments manually:
python -m venv .venv
source .venv/bin/activate # On Windows: .venv\Scripts\activate
pip install datastar-py <other-dependencies-from-script>
python <script-name>
Refer to the # dependencies = [...] section at the top of each example script to see what packages to install.

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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README.md
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README.md
Datastar Python SDK Examples
Running Examples with uv
All examples (except Django) include Inline Script Metadata (PEP 723), allowing them to be run with uv without first installing dependencies.
General Instructions
Navigate to the specific example directory and run:
uv run <script-name>
For example:
  • cd examples/fastapi && uv run app.py
  • cd examples/fasthtml && uv run simple.py
  • cd examples/sanic && uv run app.py
Django
The Django example has its own pyproject.toml with dependencies. Navigate to the Django directory and run:
uv run manage.py runserver
Alternative: Running with pip
If you prefer using pip, you can create a virtual environment and install the dependencies listed in each script's metadata comments manually:
python -m venv .venv
source .venv/bin/activate # On Windows: .venv\Scripts\activate
pip install datastar-py <other-dependencies-from-script>
python <script-name>
Refer to the # dependencies = [...] section at the top of each example script to see what packages to install.

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

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examples
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litestar
quart
quart
sanic
sanic
README.md
README.md
README.md
Datastar Python SDK Examples
Running Examples with uv
All examples (except Django) include Inline Script Metadata (PEP 723), allowing them to be run with uv without first installing dependencies.
General Instructions
Navigate to the specific example directory and run:
uv run <script-name>
For example:
  • cd examples/fastapi && uv run app.py
  • cd examples/fasthtml && uv run simple.py
  • cd examples/sanic && uv run app.py
Django
The Django example has its own pyproject.toml with dependencies. Navigate to the Django directory and run:
uv run manage.py runserver
Alternative: Running with pip
If you prefer using pip, you can create a virtual environment and install the dependencies listed in each script's metadata comments manually:
python -m venv .venv
source .venv/bin/activate # On Windows: .venv\Scripts\activate
pip install datastar-py <other-dependencies-from-script>
python <script-name>
Refer to the # dependencies = [...] section at the top of each example script to see what packages to install.

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
examples
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examples
Folders and files
NameName
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..
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fasthtml
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litestar
litestar
quart
quart
sanic
sanic
README.md
README.md
README.md
Datastar Python SDK Examples
Running Examples with uv
All examples (except Django) include Inline Script Metadata (PEP 723), allowing them to be run with uv without first installing dependencies.
General Instructions
Navigate to the specific example directory and run:
uv run <script-name>
For example:
  • cd examples/fastapi && uv run app.py
  • cd examples/fasthtml && uv run simple.py
  • cd examples/sanic && uv run app.py
Django
The Django example has its own pyproject.toml with dependencies. Navigate to the Django directory and run:
uv run manage.py runserver
Alternative: Running with pip
If you prefer using pip, you can create a virtual environment and install the dependencies listed in each script's metadata comments manually:
python -m venv .venv
source .venv/bin/activate # On Windows: .venv\Scripts\activate
pip install datastar-py <other-dependencies-from-script>
python <script-name>
Refer to the # dependencies = [...] section at the top of each example script to see what packages to install.

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
examples
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examples
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sanic
README.md
README.md
README.md
Datastar Python SDK Examples
Running Examples with uv
All examples (except Django) include Inline Script Metadata (PEP 723), allowing them to be run with uv without first installing dependencies.
General Instructions
Navigate to the specific example directory and run:
uv run <script-name>
For example:
  • cd examples/fastapi && uv run app.py
  • cd examples/fasthtml && uv run simple.py
  • cd examples/sanic && uv run app.py
Django
The Django example has its own pyproject.toml with dependencies. Navigate to the Django directory and run:
uv run manage.py runserver
Alternative: Running with pip
If you prefer using pip, you can create a virtual environment and install the dependencies listed in each script's metadata comments manually:
python -m venv .venv
source .venv/bin/activate # On Windows: .venv\Scripts\activate
pip install datastar-py <other-dependencies-from-script>
python <script-name>
Refer to the # dependencies = [...] section at the top of each example script to see what packages to install.

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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examples
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examples
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litestar
litestar
quart
quart
sanic
sanic
README.md
README.md
README.md
Datastar Python SDK Examples
Running Examples with uv
All examples (except Django) include Inline Script Metadata (PEP 723), allowing them to be run with uv without first installing dependencies.
General Instructions
Navigate to the specific example directory and run:
uv run <script-name>
For example:
  • cd examples/fastapi && uv run app.py
  • cd examples/fasthtml && uv run simple.py
  • cd examples/sanic && uv run app.py
Django
The Django example has its own pyproject.toml with dependencies. Navigate to the Django directory and run:
uv run manage.py runserver
Alternative: Running with pip
If you prefer using pip, you can create a virtual environment and install the dependencies listed in each script's metadata comments manually:
python -m venv .venv
source .venv/bin/activate # On Windows: .venv\Scripts\activate
pip install datastar-py <other-dependencies-from-script>
python <script-name>
Refer to the # dependencies = [...] section at the top of each example script to see what packages to install.