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python-brotherprint

Brother networked label printers library for Python

This was developed for the QL-580N but I've heard it also works for the following:

  • QL-720NW

Installation

The easiest way to install this package is with pip.

pip install brotherprint

Usage

This library supports two printing modes. ESC/P commands, and templates. I highly recommend using templates, because it is easier to manage, and offers more features. I will, however, go over both. You should review the official Brother documentation here (ESCP Docs) and here (Template Command Docs), to know what is available.

Setup

Regardless of which mode you are using, you need to intialize and connect a socket object, and pass the resulting socket object to the BrotherLabel object instantiator.

from brotherprint import BrotherPrint
f_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
f_socket.connect((<ip_address>,<port (9100 by default for QL580N)>))
printjob = BrotherPrint(f_socket)

ESC/P Printing

Invoke escp commands through certain BrotherLabel object methods (see actual file for method descriptions) Make sure to end with the print page command, signifying the end of a label.

printjob.command_mode()
printjob.initialize()
printjob.bold('on')
printjob.send(<text>)
printjob.print_page(<cut_setting>)

Template Printing

Create your template and upload it to the printer. After creating a BrotherLabel object, call template_mode() to set the printer to template mode, and then use the template commands to fill in your label.

printjob.template_mode()
printjob.template_init()
printjob.choose_template(<template_number>)
printjob.select_and_insert(<field_name>, <data>)
printjob.select_and_insert(<field_name2>, <data2>)
printjob.select_and_insert(<field_name3>, <data3>)
printjob.template_print()

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Brother QL-580N networked printers library for Python

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, '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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Repository files navigation
python-brotherprint
Brother networked label printers library for Python
This was developed for the QL-580N but I've heard it also works for the following:
  • QL-720NW
Installation
The easiest way to install this package is with pip.
pip install brotherprint

Usage
This library supports two printing modes. ESC/P commands, and templates. I highly recommend using templates, because it is easier to manage, and offers more features. I will, however, go over both.
You should review the official Brother documentation here (ESCP Docs) and here (Template Command Docs), to know what is available.
Setup
Regardless of which mode you are using, you need to intialize and connect a socket object, and pass the resulting socket object to the BrotherLabel object instantiator.
from brotherprint import BrotherPrint
f_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
f_socket.connect((<ip_address>,<port (9100 by default for QL580N)>))
printjob = BrotherPrint(f_socket)

ESC/P Printing
Invoke escp commands through certain BrotherLabel object methods (see actual file for method descriptions)
Make sure to end with the print page command, signifying the end of a label.
printjob.command_mode()
printjob.initialize()
printjob.bold('on')
printjob.send(<text>)
printjob.print_page(<cut_setting>)

Template Printing
Create your template and upload it to the printer. After creating a BrotherLabel object, call template_mode() to set the printer to template mode, and then use the template commands to fill in your label.
printjob.template_mode()
printjob.template_init()
printjob.choose_template(<template_number>)
printjob.select_and_insert(<field_name>, <data>)
printjob.select_and_insert(<field_name2>, <data2>)
printjob.select_and_insert(<field_name3>, <data3>)
printjob.template_print()

About
Brother QL-580N networked printers library for Python
Resources
Readme
MIT license
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1 watching
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, '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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Repository files navigation
python-brotherprint
Brother networked label printers library for Python
This was developed for the QL-580N but I've heard it also works for the following:
  • QL-720NW
Installation
The easiest way to install this package is with pip.
pip install brotherprint

Usage
This library supports two printing modes. ESC/P commands, and templates. I highly recommend using templates, because it is easier to manage, and offers more features. I will, however, go over both.
You should review the official Brother documentation here (ESCP Docs) and here (Template Command Docs), to know what is available.
Setup
Regardless of which mode you are using, you need to intialize and connect a socket object, and pass the resulting socket object to the BrotherLabel object instantiator.
from brotherprint import BrotherPrint
f_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
f_socket.connect((<ip_address>,<port (9100 by default for QL580N)>))
printjob = BrotherPrint(f_socket)

ESC/P Printing
Invoke escp commands through certain BrotherLabel object methods (see actual file for method descriptions)
Make sure to end with the print page command, signifying the end of a label.
printjob.command_mode()
printjob.initialize()
printjob.bold('on')
printjob.send(<text>)
printjob.print_page(<cut_setting>)

Template Printing
Create your template and upload it to the printer. After creating a BrotherLabel object, call template_mode() to set the printer to template mode, and then use the template commands to fill in your label.
printjob.template_mode()
printjob.template_init()
printjob.choose_template(<template_number>)
printjob.select_and_insert(<field_name>, <data>)
printjob.select_and_insert(<field_name2>, <data2>)
printjob.select_and_insert(<field_name3>, <data3>)
printjob.template_print()

About
Brother QL-580N networked printers library for Python
Resources
Readme
MIT license
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1 watching
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, '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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Repository files navigation
python-brotherprint
Brother networked label printers library for Python
This was developed for the QL-580N but I've heard it also works for the following:
  • QL-720NW
Installation
The easiest way to install this package is with pip.
pip install brotherprint

Usage
This library supports two printing modes. ESC/P commands, and templates. I highly recommend using templates, because it is easier to manage, and offers more features. I will, however, go over both.
You should review the official Brother documentation here (ESCP Docs) and here (Template Command Docs), to know what is available.
Setup
Regardless of which mode you are using, you need to intialize and connect a socket object, and pass the resulting socket object to the BrotherLabel object instantiator.
from brotherprint import BrotherPrint
f_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
f_socket.connect((<ip_address>,<port (9100 by default for QL580N)>))
printjob = BrotherPrint(f_socket)

ESC/P Printing
Invoke escp commands through certain BrotherLabel object methods (see actual file for method descriptions)
Make sure to end with the print page command, signifying the end of a label.
printjob.command_mode()
printjob.initialize()
printjob.bold('on')
printjob.send(<text>)
printjob.print_page(<cut_setting>)

Template Printing
Create your template and upload it to the printer. After creating a BrotherLabel object, call template_mode() to set the printer to template mode, and then use the template commands to fill in your label.
printjob.template_mode()
printjob.template_init()
printjob.choose_template(<template_number>)
printjob.select_and_insert(<field_name>, <data>)
printjob.select_and_insert(<field_name2>, <data2>)
printjob.select_and_insert(<field_name3>, <data3>)
printjob.template_print()

About
Brother QL-580N networked printers library for Python
Resources
Readme
MIT license
Activity
Stars
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Watchers
1 watching
Forks
0 forks
Report repository
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, '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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setup.py
setup.py
Repository files navigation
python-brotherprint
Brother networked label printers library for Python
This was developed for the QL-580N but I've heard it also works for the following:
  • QL-720NW
Installation
The easiest way to install this package is with pip.
pip install brotherprint

Usage
This library supports two printing modes. ESC/P commands, and templates. I highly recommend using templates, because it is easier to manage, and offers more features. I will, however, go over both.
You should review the official Brother documentation here (ESCP Docs) and here (Template Command Docs), to know what is available.
Setup
Regardless of which mode you are using, you need to intialize and connect a socket object, and pass the resulting socket object to the BrotherLabel object instantiator.
from brotherprint import BrotherPrint
f_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
f_socket.connect((<ip_address>,<port (9100 by default for QL580N)>))
printjob = BrotherPrint(f_socket)

ESC/P Printing
Invoke escp commands through certain BrotherLabel object methods (see actual file for method descriptions)
Make sure to end with the print page command, signifying the end of a label.
printjob.command_mode()
printjob.initialize()
printjob.bold('on')
printjob.send(<text>)
printjob.print_page(<cut_setting>)

Template Printing
Create your template and upload it to the printer. After creating a BrotherLabel object, call template_mode() to set the printer to template mode, and then use the template commands to fill in your label.
printjob.template_mode()
printjob.template_init()
printjob.choose_template(<template_number>)
printjob.select_and_insert(<field_name>, <data>)
printjob.select_and_insert(<field_name2>, <data2>)
printjob.select_and_insert(<field_name3>, <data3>)
printjob.template_print()

About
Brother QL-580N networked printers library for Python
Resources
Readme
MIT license
Activity
Stars
0 stars
Watchers
1 watching
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0 forks
Report repository
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, '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('^' + ".*" + '

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Repository files navigation
python-brotherprint
Brother networked label printers library for Python
This was developed for the QL-580N but I've heard it also works for the following:
  • QL-720NW
Installation
The easiest way to install this package is with pip.
pip install brotherprint

Usage
This library supports two printing modes. ESC/P commands, and templates. I highly recommend using templates, because it is easier to manage, and offers more features. I will, however, go over both.
You should review the official Brother documentation here (ESCP Docs) and here (Template Command Docs), to know what is available.
Setup
Regardless of which mode you are using, you need to intialize and connect a socket object, and pass the resulting socket object to the BrotherLabel object instantiator.
from brotherprint import BrotherPrint
f_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
f_socket.connect((<ip_address>,<port (9100 by default for QL580N)>))
printjob = BrotherPrint(f_socket)

ESC/P Printing
Invoke escp commands through certain BrotherLabel object methods (see actual file for method descriptions)
Make sure to end with the print page command, signifying the end of a label.
printjob.command_mode()
printjob.initialize()
printjob.bold('on')
printjob.send(<text>)
printjob.print_page(<cut_setting>)

Template Printing
Create your template and upload it to the printer. After creating a BrotherLabel object, call template_mode() to set the printer to template mode, and then use the template commands to fill in your label.
printjob.template_mode()
printjob.template_init()
printjob.choose_template(<template_number>)
printjob.select_and_insert(<field_name>, <data>)
printjob.select_and_insert(<field_name2>, <data2>)
printjob.select_and_insert(<field_name3>, <data3>)
printjob.template_print()

About
Brother QL-580N networked printers library for Python
Resources
Readme
MIT license
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
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, '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('^' + ".*" + '

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setup.py
Repository files navigation
python-brotherprint
Brother networked label printers library for Python
This was developed for the QL-580N but I've heard it also works for the following:
  • QL-720NW
Installation
The easiest way to install this package is with pip.
pip install brotherprint

Usage
This library supports two printing modes. ESC/P commands, and templates. I highly recommend using templates, because it is easier to manage, and offers more features. I will, however, go over both.
You should review the official Brother documentation here (ESCP Docs) and here (Template Command Docs), to know what is available.
Setup
Regardless of which mode you are using, you need to intialize and connect a socket object, and pass the resulting socket object to the BrotherLabel object instantiator.
from brotherprint import BrotherPrint
f_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
f_socket.connect((<ip_address>,<port (9100 by default for QL580N)>))
printjob = BrotherPrint(f_socket)

ESC/P Printing
Invoke escp commands through certain BrotherLabel object methods (see actual file for method descriptions)
Make sure to end with the print page command, signifying the end of a label.
printjob.command_mode()
printjob.initialize()
printjob.bold('on')
printjob.send(<text>)
printjob.print_page(<cut_setting>)

Template Printing
Create your template and upload it to the printer. After creating a BrotherLabel object, call template_mode() to set the printer to template mode, and then use the template commands to fill in your label.
printjob.template_mode()
printjob.template_init()
printjob.choose_template(<template_number>)
printjob.select_and_insert(<field_name>, <data>)
printjob.select_and_insert(<field_name2>, <data2>)
printjob.select_and_insert(<field_name3>, <data3>)
printjob.template_print()

About
Brother QL-580N networked printers library for Python
Resources
Readme
MIT license
Activity
Stars
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Watchers
1 watching
Forks
0 forks
Report repository
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, '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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python-brotherprint
Brother networked label printers library for Python
This was developed for the QL-580N but I've heard it also works for the following:
  • QL-720NW
Installation
The easiest way to install this package is with pip.
pip install brotherprint

Usage
This library supports two printing modes. ESC/P commands, and templates. I highly recommend using templates, because it is easier to manage, and offers more features. I will, however, go over both.
You should review the official Brother documentation here (ESCP Docs) and here (Template Command Docs), to know what is available.
Setup
Regardless of which mode you are using, you need to intialize and connect a socket object, and pass the resulting socket object to the BrotherLabel object instantiator.
from brotherprint import BrotherPrint
f_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
f_socket.connect((<ip_address>,<port (9100 by default for QL580N)>))
printjob = BrotherPrint(f_socket)

ESC/P Printing
Invoke escp commands through certain BrotherLabel object methods (see actual file for method descriptions)
Make sure to end with the print page command, signifying the end of a label.
printjob.command_mode()
printjob.initialize()
printjob.bold('on')
printjob.send(<text>)
printjob.print_page(<cut_setting>)

Template Printing
Create your template and upload it to the printer. After creating a BrotherLabel object, call template_mode() to set the printer to template mode, and then use the template commands to fill in your label.
printjob.template_mode()
printjob.template_init()
printjob.choose_template(<template_number>)
printjob.select_and_insert(<field_name>, <data>)
printjob.select_and_insert(<field_name2>, <data2>)
printjob.select_and_insert(<field_name3>, <data3>)
printjob.template_print()

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Brother QL-580N networked printers library for Python
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