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Reification (Python library)

Unit Tests

Reified generics in Python to get type parameters at runtime

fromreificationimportReifiedclassReifiedList[T](Reified, list[T]):
passxs=ReifiedList[int](range(10))
print(xs) # [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]print(xs.targ) # <class 'int'>

See the detailed documentation at https://curegit.github.io/reification/.

Requirements

  • Python >= 3.12

This library is written in pure Python and does not require any external modules.

Installation

pip install reification

Example Usage: Type-Checked Generic Stack

fromreificationimportReifiedclassReifiedStack[T](Reified):
def__init__(self) ->None:
super().__init__()
self.items: list[T] = []
defpush(self, item: T) ->None:
# We can do runtime checkifisinstance(item, self.targ):
self.items.append(item)
else:
raiseTypeError()
defpop(self) ->T:
ifself.items:
returnself.items.pop()
else:
raiseIndexError("pop from empty stack")
stack=ReifiedStack[str]()
stack.push("spam") # OKstack.push(42) # raises TypeError

The ReifiedStack class created here is generic and derived from the Reified base class, and implements a simple stack with push and pop methods.

In the push method, we are checking at runtime if the item being pushed is of the specified generic type (this type is accessible via the targ attribute inherited from Reified). If the type of the item does not match, a TypeError is raised.

In the example usage, we create an instance of the ReifiedStack class with str as the type argument. When we try to push a string "spam", the item is accepted since it matches the stack's specified type argument. However, when we try to push an integer 42, a TypeError is raised because the type of the item does not match the stack's type argument.

This demonstrates the use of reified generics in Python where we can have runtime access to the type parameters, enabling us to type check dynamically at runtime. This is useful in situations where we need to enforce type safety in our code or use type information at runtime.

API

See the full API reference at https://curegit.github.io/reification/reference/.

License

WTFPL

Copyright (C) 2023 curegit

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Reified generics in Python to get type parameters at runtime

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, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all
 blocks
(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
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;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
GitHub - curegit/reification: Reified generics in Python to get type parameters at runtime · GitHub
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Reification (Python library)

Unit Tests

Reified generics in Python to get type parameters at runtime

fromreificationimportReifiedclassReifiedList[T](Reified, list[T]):
passxs=ReifiedList[int](range(10))
print(xs) # [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]print(xs.targ) # <class 'int'>

See the detailed documentation at https://curegit.github.io/reification/.

Requirements

  • Python >= 3.12

This library is written in pure Python and does not require any external modules.

Installation

pip install reification

Example Usage: Type-Checked Generic Stack

fromreificationimportReifiedclassReifiedStack[T](Reified):
def__init__(self) ->None:
super().__init__()
self.items: list[T] = []
defpush(self, item: T) ->None:
# We can do runtime checkifisinstance(item, self.targ):
self.items.append(item)
else:
raiseTypeError()
defpop(self) ->T:
ifself.items:
returnself.items.pop()
else:
raiseIndexError("pop from empty stack")
stack=ReifiedStack[str]()
stack.push("spam") # OKstack.push(42) # raises TypeError

The ReifiedStack class created here is generic and derived from the Reified base class, and implements a simple stack with push and pop methods.

In the push method, we are checking at runtime if the item being pushed is of the specified generic type (this type is accessible via the targ attribute inherited from Reified). If the type of the item does not match, a TypeError is raised.

In the example usage, we create an instance of the ReifiedStack class with str as the type argument. When we try to push a string "spam", the item is accepted since it matches the stack's specified type argument. However, when we try to push an integer 42, a TypeError is raised because the type of the item does not match the stack's type argument.

This demonstrates the use of reified generics in Python where we can have runtime access to the type parameters, enabling us to type check dynamically at runtime. This is useful in situations where we need to enforce type safety in our code or use type information at runtime.

API

See the full API reference at https://curegit.github.io/reification/reference/.

License

WTFPL

Copyright (C) 2023 curegit

About

Reified generics in Python to get type parameters at runtime

Topics

Resources

Stars

3 stars

Watchers

1 watching

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Languages

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

Unit Tests

Reified generics in Python to get type parameters at runtime

fromreificationimportReifiedclassReifiedList[T](Reified, list[T]):
passxs=ReifiedList[int](range(10))
print(xs) # [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]print(xs.targ) # <class 'int'>

See the detailed documentation at https://curegit.github.io/reification/.

Requirements

  • Python >= 3.12

This library is written in pure Python and does not require any external modules.

Installation

pip install reification

Example Usage: Type-Checked Generic Stack

fromreificationimportReifiedclassReifiedStack[T](Reified):
def__init__(self) ->None:
super().__init__()
self.items: list[T] = []
defpush(self, item: T) ->None:
# We can do runtime checkifisinstance(item, self.targ):
self.items.append(item)
else:
raiseTypeError()
defpop(self) ->T:
ifself.items:
returnself.items.pop()
else:
raiseIndexError("pop from empty stack")
stack=ReifiedStack[str]()
stack.push("spam") # OKstack.push(42) # raises TypeError

The ReifiedStack class created here is generic and derived from the Reified base class, and implements a simple stack with push and pop methods.

In the push method, we are checking at runtime if the item being pushed is of the specified generic type (this type is accessible via the targ attribute inherited from Reified). If the type of the item does not match, a TypeError is raised.

In the example usage, we create an instance of the ReifiedStack class with str as the type argument. When we try to push a string "spam", the item is accepted since it matches the stack's specified type argument. However, when we try to push an integer 42, a TypeError is raised because the type of the item does not match the stack's type argument.

This demonstrates the use of reified generics in Python where we can have runtime access to the type parameters, enabling us to type check dynamically at runtime. This is useful in situations where we need to enforce type safety in our code or use type information at runtime.

API

See the full API reference at https://curegit.github.io/reification/reference/.

License

WTFPL

Copyright (C) 2023 curegit

About

Reified generics in Python to get type parameters at runtime

Topics

Resources

Stars

3 stars

Watchers

1 watching

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Used by

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Languages

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

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Reification (Python library)

Unit Tests

Reified generics in Python to get type parameters at runtime

fromreificationimportReifiedclassReifiedList[T](Reified, list[T]):
passxs=ReifiedList[int](range(10))
print(xs) # [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]print(xs.targ) # <class 'int'>

See the detailed documentation at https://curegit.github.io/reification/.

Requirements

  • Python >= 3.12

This library is written in pure Python and does not require any external modules.

Installation

pip install reification

Example Usage: Type-Checked Generic Stack

fromreificationimportReifiedclassReifiedStack[T](Reified):
def__init__(self) ->None:
super().__init__()
self.items: list[T] = []
defpush(self, item: T) ->None:
# We can do runtime checkifisinstance(item, self.targ):
self.items.append(item)
else:
raiseTypeError()
defpop(self) ->T:
ifself.items:
returnself.items.pop()
else:
raiseIndexError("pop from empty stack")
stack=ReifiedStack[str]()
stack.push("spam") # OKstack.push(42) # raises TypeError

The ReifiedStack class created here is generic and derived from the Reified base class, and implements a simple stack with push and pop methods.

In the push method, we are checking at runtime if the item being pushed is of the specified generic type (this type is accessible via the targ attribute inherited from Reified). If the type of the item does not match, a TypeError is raised.

In the example usage, we create an instance of the ReifiedStack class with str as the type argument. When we try to push a string "spam", the item is accepted since it matches the stack's specified type argument. However, when we try to push an integer 42, a TypeError is raised because the type of the item does not match the stack's type argument.

This demonstrates the use of reified generics in Python where we can have runtime access to the type parameters, enabling us to type check dynamically at runtime. This is useful in situations where we need to enforce type safety in our code or use type information at runtime.

API

See the full API reference at https://curegit.github.io/reification/reference/.

License

WTFPL

Copyright (C) 2023 curegit

About

Reified generics in Python to get type parameters at runtime

Topics

Resources

Stars

3 stars

Watchers

1 watching

Forks

Releases

Used by

Contributors

Languages

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

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Reification (Python library)

Unit Tests

Reified generics in Python to get type parameters at runtime

fromreificationimportReifiedclassReifiedList[T](Reified, list[T]):
passxs=ReifiedList[int](range(10))
print(xs) # [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]print(xs.targ) # <class 'int'>

See the detailed documentation at https://curegit.github.io/reification/.

Requirements

  • Python >= 3.12

This library is written in pure Python and does not require any external modules.

Installation

pip install reification

Example Usage: Type-Checked Generic Stack

fromreificationimportReifiedclassReifiedStack[T](Reified):
def__init__(self) ->None:
super().__init__()
self.items: list[T] = []
defpush(self, item: T) ->None:
# We can do runtime checkifisinstance(item, self.targ):
self.items.append(item)
else:
raiseTypeError()
defpop(self) ->T:
ifself.items:
returnself.items.pop()
else:
raiseIndexError("pop from empty stack")
stack=ReifiedStack[str]()
stack.push("spam") # OKstack.push(42) # raises TypeError

The ReifiedStack class created here is generic and derived from the Reified base class, and implements a simple stack with push and pop methods.

In the push method, we are checking at runtime if the item being pushed is of the specified generic type (this type is accessible via the targ attribute inherited from Reified). If the type of the item does not match, a TypeError is raised.

In the example usage, we create an instance of the ReifiedStack class with str as the type argument. When we try to push a string "spam", the item is accepted since it matches the stack's specified type argument. However, when we try to push an integer 42, a TypeError is raised because the type of the item does not match the stack's type argument.

This demonstrates the use of reified generics in Python where we can have runtime access to the type parameters, enabling us to type check dynamically at runtime. This is useful in situations where we need to enforce type safety in our code or use type information at runtime.

API

See the full API reference at https://curegit.github.io/reification/reference/.

License

WTFPL

Copyright (C) 2023 curegit

About

Reified generics in Python to get type parameters at runtime

Topics

Resources

Stars

3 stars

Watchers

1 watching

Forks

Releases

Used by

Contributors

Languages

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

Unit Tests

Reified generics in Python to get type parameters at runtime

fromreificationimportReifiedclassReifiedList[T](Reified, list[T]):
passxs=ReifiedList[int](range(10))
print(xs) # [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]print(xs.targ) # <class 'int'>

See the detailed documentation at https://curegit.github.io/reification/.

Requirements

  • Python >= 3.12

This library is written in pure Python and does not require any external modules.

Installation

pip install reification

Example Usage: Type-Checked Generic Stack

fromreificationimportReifiedclassReifiedStack[T](Reified):
def__init__(self) ->None:
super().__init__()
self.items: list[T] = []
defpush(self, item: T) ->None:
# We can do runtime checkifisinstance(item, self.targ):
self.items.append(item)
else:
raiseTypeError()
defpop(self) ->T:
ifself.items:
returnself.items.pop()
else:
raiseIndexError("pop from empty stack")
stack=ReifiedStack[str]()
stack.push("spam") # OKstack.push(42) # raises TypeError

The ReifiedStack class created here is generic and derived from the Reified base class, and implements a simple stack with push and pop methods.

In the push method, we are checking at runtime if the item being pushed is of the specified generic type (this type is accessible via the targ attribute inherited from Reified). If the type of the item does not match, a TypeError is raised.

In the example usage, we create an instance of the ReifiedStack class with str as the type argument. When we try to push a string "spam", the item is accepted since it matches the stack's specified type argument. However, when we try to push an integer 42, a TypeError is raised because the type of the item does not match the stack's type argument.

This demonstrates the use of reified generics in Python where we can have runtime access to the type parameters, enabling us to type check dynamically at runtime. This is useful in situations where we need to enforce type safety in our code or use type information at runtime.

API

See the full API reference at https://curegit.github.io/reification/reference/.

License

WTFPL

Copyright (C) 2023 curegit

About

Reified generics in Python to get type parameters at runtime

Topics

Resources

Stars

3 stars

Watchers

1 watching

Forks

Releases

Used by

Contributors

Languages

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

Repository files navigation

Reification (Python library)

Unit Tests

Reified generics in Python to get type parameters at runtime

fromreificationimportReifiedclassReifiedList[T](Reified, list[T]):
passxs=ReifiedList[int](range(10))
print(xs) # [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]print(xs.targ) # <class 'int'>

See the detailed documentation at https://curegit.github.io/reification/.

Requirements

  • Python >= 3.12

This library is written in pure Python and does not require any external modules.

Installation

pip install reification

Example Usage: Type-Checked Generic Stack

fromreificationimportReifiedclassReifiedStack[T](Reified):
def__init__(self) ->None:
super().__init__()
self.items: list[T] = []
defpush(self, item: T) ->None:
# We can do runtime checkifisinstance(item, self.targ):
self.items.append(item)
else:
raiseTypeError()
defpop(self) ->T:
ifself.items:
returnself.items.pop()
else:
raiseIndexError("pop from empty stack")
stack=ReifiedStack[str]()
stack.push("spam") # OKstack.push(42) # raises TypeError

The ReifiedStack class created here is generic and derived from the Reified base class, and implements a simple stack with push and pop methods.

In the push method, we are checking at runtime if the item being pushed is of the specified generic type (this type is accessible via the targ attribute inherited from Reified). If the type of the item does not match, a TypeError is raised.

In the example usage, we create an instance of the ReifiedStack class with str as the type argument. When we try to push a string "spam", the item is accepted since it matches the stack's specified type argument. However, when we try to push an integer 42, a TypeError is raised because the type of the item does not match the stack's type argument.

This demonstrates the use of reified generics in Python where we can have runtime access to the type parameters, enabling us to type check dynamically at runtime. This is useful in situations where we need to enforce type safety in our code or use type information at runtime.

API

See the full API reference at https://curegit.github.io/reification/reference/.

License

WTFPL

Copyright (C) 2023 curegit

About

Reified generics in Python to get type parameters at runtime

Topics

Resources

Stars

3 stars

Watchers

1 watching

Forks

Releases

Used by

Contributors

Languages

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

Unit Tests

Reified generics in Python to get type parameters at runtime

fromreificationimportReifiedclassReifiedList[T](Reified, list[T]):
passxs=ReifiedList[int](range(10))
print(xs) # [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]print(xs.targ) # <class 'int'>

See the detailed documentation at https://curegit.github.io/reification/.

Requirements

  • Python >= 3.12

This library is written in pure Python and does not require any external modules.

Installation

pip install reification

Example Usage: Type-Checked Generic Stack

fromreificationimportReifiedclassReifiedStack[T](Reified):
def__init__(self) ->None:
super().__init__()
self.items: list[T] = []
defpush(self, item: T) ->None:
# We can do runtime checkifisinstance(item, self.targ):
self.items.append(item)
else:
raiseTypeError()
defpop(self) ->T:
ifself.items:
returnself.items.pop()
else:
raiseIndexError("pop from empty stack")
stack=ReifiedStack[str]()
stack.push("spam") # OKstack.push(42) # raises TypeError

The ReifiedStack class created here is generic and derived from the Reified base class, and implements a simple stack with push and pop methods.

In the push method, we are checking at runtime if the item being pushed is of the specified generic type (this type is accessible via the targ attribute inherited from Reified). If the type of the item does not match, a TypeError is raised.

In the example usage, we create an instance of the ReifiedStack class with str as the type argument. When we try to push a string "spam", the item is accepted since it matches the stack's specified type argument. However, when we try to push an integer 42, a TypeError is raised because the type of the item does not match the stack's type argument.

This demonstrates the use of reified generics in Python where we can have runtime access to the type parameters, enabling us to type check dynamically at runtime. This is useful in situations where we need to enforce type safety in our code or use type information at runtime.

API

See the full API reference at https://curegit.github.io/reification/reference/.

License

WTFPL

Copyright (C) 2023 curegit

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Reified generics in Python to get type parameters at runtime

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