Skip to content

Internal error from py uninstall #354

Closed as duplicate of#283
Closed as duplicate of#283
Internal error from py uninstall#354

Description

@pfmoore
pfmoore
opened on May 29, 2026

Install source and version

  • Installed from the Windows Store
  • Installed with the MSIX from python.org
  • Installed with the MSI from python.org
  • Installed with winget install 9NQ7512CXL7T

Version: 26.2

Describe the bug
py uninstall 3.10 does the uninstall, but reports an INTERNAL ERROR.

To Reproduce
❯ py exec -3.10

The signature for https://www.python.org/ftp/python/index-windows.json was successfully verified.
The signature for https://www.python.org/ftp/python/index-windows-recent.json was successfully verified.
The signature for https://www.python.org/ftp/python/index-windows-legacy.json was successfully verified.
Installing Python 3.10.11.
Extracting: ...................................................................✅
To see all available commands, run 'py help'

Python 3.10.11 (tags/v3.10.11:7d4cc5a, Apr 5 2023, 00:38:17) [MSC v.1929 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.

^Z

❯ py list
Tag Name Managed By Version Alias
3.14[-64] * Python 3.14.5 PythonCore 3.14.5 python3[-64].exe, python3.14[-64].exe
3.14t[-64] Python 3.14.5 (free-threaded) PythonCore 3.14.5 python3.14t[-64].exe, python3t[-64].exe
3.10[-64] Python 3.10.11 PythonCore 3.10.11 python3.10.exe
❯ py uninstall 3.10
Uninstall Python 3.10.11? [Y/n] y
Removed Python 3.10.11
[ERROR] INTERNAL ERROR: AttributeError: 'UninstallCommand' object has no attribute 'enable_entrypoints'

Expected behavior
No internal error.

Additional context
The behaviour appears to be fine (the uninstall worked), so the error is not a major issue in practice.

Metadata

Metadata

Assignees

No one assigned

    Labels

    No labels
    No labels

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions

    , '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" + '
Internal error from `py uninstall` · Issue #354 · python/pymanager · GitHub
    Skip to content
    Internal error from py uninstall #354
    Closed as duplicate of#283
    Closed as duplicate of#283
    Internal error from py uninstall#354
    Description
    @pfmoore
    pfmoore
    opened on May 29, 2026
    Install source and version
    •  Installed from the Windows Store
    •  Installed with the MSIX from python.org
    •  Installed with the MSI from python.org
    •  Installed with winget install 9NQ7512CXL7T
    Version: 26.2
    Describe the bug
    py uninstall 3.10 does the uninstall, but reports an INTERNAL ERROR.
    To Reproduce
    
❯ py exec -3.10
    The signature for https://www.python.org/ftp/python/index-windows.json was successfully verified.
    
The signature for https://www.python.org/ftp/python/index-windows-recent.json was successfully verified.
    
The signature for https://www.python.org/ftp/python/index-windows-legacy.json was successfully verified.
    
Installing Python 3.10.11.
    
Extracting: ...................................................................✅
    
To see all available commands, run 'py help'
    Python 3.10.11 (tags/v3.10.11:7d4cc5a, Apr 5 2023, 00:38:17) [MSC v.1929 64 bit (AMD64)] on win32
    
Type "help", "copyright", "credits" or "license" for more information.
    ^Z
    ❯ py list
    
Tag Name Managed By Version Alias
    
3.14[-64] * Python 3.14.5 PythonCore 3.14.5 python3[-64].exe, python3.14[-64].exe
    
3.14t[-64] Python 3.14.5 (free-threaded) PythonCore 3.14.5 python3.14t[-64].exe, python3t[-64].exe
    
3.10[-64] Python 3.10.11 PythonCore 3.10.11 python3.10.exe
    
❯ py uninstall 3.10
    
Uninstall Python 3.10.11? [Y/n] y
    
Removed Python 3.10.11
    
[ERROR] INTERNAL ERROR: AttributeError: 'UninstallCommand' object has no attribute 'enable_entrypoints'
    Expected behavior
    
No internal error.
    Additional context
    
The behaviour appears to be fine (the uninstall worked), so the error is not a major issue in practice.
    Metadata
    Metadata
    Assignees
    No one assigned
      Labels
      No labels
      No labels
      Projects
      No projects
      Milestone
      No milestone
      Relationships
      None yet
      Development
      No branches or pull requests
      Issue actions
      
, '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('^' + ".*" + '
Internal error from `py uninstall` · Issue #354 · python/pymanager · GitHub
      Skip to content
      Internal error from py uninstall #354
      Closed as duplicate of#283
      Closed as duplicate of#283
      Internal error from py uninstall#354
      Description
      @pfmoore
      pfmoore
      opened on May 29, 2026
      Install source and version
      •  Installed from the Windows Store
      •  Installed with the MSIX from python.org
      •  Installed with the MSI from python.org
      •  Installed with winget install 9NQ7512CXL7T
      Version: 26.2
      Describe the bug
      py uninstall 3.10 does the uninstall, but reports an INTERNAL ERROR.
      To Reproduce
      
❯ py exec -3.10
      The signature for https://www.python.org/ftp/python/index-windows.json was successfully verified.
      
The signature for https://www.python.org/ftp/python/index-windows-recent.json was successfully verified.
      
The signature for https://www.python.org/ftp/python/index-windows-legacy.json was successfully verified.
      
Installing Python 3.10.11.
      
Extracting: ...................................................................✅
      
To see all available commands, run 'py help'
      Python 3.10.11 (tags/v3.10.11:7d4cc5a, Apr 5 2023, 00:38:17) [MSC v.1929 64 bit (AMD64)] on win32
      
Type "help", "copyright", "credits" or "license" for more information.
      ^Z
      ❯ py list
      
Tag Name Managed By Version Alias
      
3.14[-64] * Python 3.14.5 PythonCore 3.14.5 python3[-64].exe, python3.14[-64].exe
      
3.14t[-64] Python 3.14.5 (free-threaded) PythonCore 3.14.5 python3.14t[-64].exe, python3t[-64].exe
      
3.10[-64] Python 3.10.11 PythonCore 3.10.11 python3.10.exe
      
❯ py uninstall 3.10
      
Uninstall Python 3.10.11? [Y/n] y
      
Removed Python 3.10.11
      
[ERROR] INTERNAL ERROR: AttributeError: 'UninstallCommand' object has no attribute 'enable_entrypoints'
      Expected behavior
      
No internal error.
      Additional context
      
The behaviour appears to be fine (the uninstall worked), so the error is not a major issue in practice.
      Metadata
      Metadata
      Assignees
      No one assigned
        Labels
        No labels
        No labels
        Projects
        No projects
        Milestone
        No milestone
        Relationships
        None yet
        Development
        No branches or pull requests
        Issue actions
        
, '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('^' + ".*" + '
Internal error from `py uninstall` · Issue #354 · python/pymanager · GitHub
        Skip to content
        Internal error from py uninstall #354
        Closed as duplicate of#283
        Closed as duplicate of#283
        Internal error from py uninstall#354
        Description
        @pfmoore
        pfmoore
        opened on May 29, 2026
        Install source and version
        •  Installed from the Windows Store
        •  Installed with the MSIX from python.org
        •  Installed with the MSI from python.org
        •  Installed with winget install 9NQ7512CXL7T
        Version: 26.2
        Describe the bug
        py uninstall 3.10 does the uninstall, but reports an INTERNAL ERROR.
        To Reproduce
        
❯ py exec -3.10
        The signature for https://www.python.org/ftp/python/index-windows.json was successfully verified.
        
The signature for https://www.python.org/ftp/python/index-windows-recent.json was successfully verified.
        
The signature for https://www.python.org/ftp/python/index-windows-legacy.json was successfully verified.
        
Installing Python 3.10.11.
        
Extracting: ...................................................................✅
        
To see all available commands, run 'py help'
        Python 3.10.11 (tags/v3.10.11:7d4cc5a, Apr 5 2023, 00:38:17) [MSC v.1929 64 bit (AMD64)] on win32
        
Type "help", "copyright", "credits" or "license" for more information.
        ^Z
        ❯ py list
        
Tag Name Managed By Version Alias
        
3.14[-64] * Python 3.14.5 PythonCore 3.14.5 python3[-64].exe, python3.14[-64].exe
        
3.14t[-64] Python 3.14.5 (free-threaded) PythonCore 3.14.5 python3.14t[-64].exe, python3t[-64].exe
        
3.10[-64] Python 3.10.11 PythonCore 3.10.11 python3.10.exe
        
❯ py uninstall 3.10
        
Uninstall Python 3.10.11? [Y/n] y
        
Removed Python 3.10.11
        
[ERROR] INTERNAL ERROR: AttributeError: 'UninstallCommand' object has no attribute 'enable_entrypoints'
        Expected behavior
        
No internal error.
        Additional context
        
The behaviour appears to be fine (the uninstall worked), so the error is not a major issue in practice.
        Metadata
        Metadata
        Assignees
        No one assigned
          Labels
          No labels
          No labels
          Projects
          No projects
          Milestone
          No milestone
          Relationships
          None yet
          Development
          No branches or pull requests
          Issue actions
          
, '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" + '
Internal error from `py uninstall` · Issue #354 · python/pymanager · GitHub
          Skip to content
          Internal error from py uninstall #354
          Closed as duplicate of#283
          Closed as duplicate of#283
          Internal error from py uninstall#354
          Description
          @pfmoore
          pfmoore
          opened on May 29, 2026
          Install source and version
          •  Installed from the Windows Store
          •  Installed with the MSIX from python.org
          •  Installed with the MSI from python.org
          •  Installed with winget install 9NQ7512CXL7T
          Version: 26.2
          Describe the bug
          py uninstall 3.10 does the uninstall, but reports an INTERNAL ERROR.
          To Reproduce
          
❯ py exec -3.10
          The signature for https://www.python.org/ftp/python/index-windows.json was successfully verified.
          
The signature for https://www.python.org/ftp/python/index-windows-recent.json was successfully verified.
          
The signature for https://www.python.org/ftp/python/index-windows-legacy.json was successfully verified.
          
Installing Python 3.10.11.
          
Extracting: ...................................................................✅
          
To see all available commands, run 'py help'
          Python 3.10.11 (tags/v3.10.11:7d4cc5a, Apr 5 2023, 00:38:17) [MSC v.1929 64 bit (AMD64)] on win32
          
Type "help", "copyright", "credits" or "license" for more information.
          ^Z
          ❯ py list
          
Tag Name Managed By Version Alias
          
3.14[-64] * Python 3.14.5 PythonCore 3.14.5 python3[-64].exe, python3.14[-64].exe
          
3.14t[-64] Python 3.14.5 (free-threaded) PythonCore 3.14.5 python3.14t[-64].exe, python3t[-64].exe
          
3.10[-64] Python 3.10.11 PythonCore 3.10.11 python3.10.exe
          
❯ py uninstall 3.10
          
Uninstall Python 3.10.11? [Y/n] y
          
Removed Python 3.10.11
          
[ERROR] INTERNAL ERROR: AttributeError: 'UninstallCommand' object has no attribute 'enable_entrypoints'
          Expected behavior
          
No internal error.
          Additional context
          
The behaviour appears to be fine (the uninstall worked), so the error is not a major issue in practice.
          Metadata
          Metadata
          Assignees
          No one assigned
            Labels
            No labels
            No labels
            Projects
            No projects
            Milestone
            No milestone
            Relationships
            None yet
            Development
            No branches or pull requests
            Issue actions
            
, '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('^' + ".*" + '
Internal error from `py uninstall` · Issue #354 · python/pymanager · GitHub
            Skip to content
            Internal error from py uninstall #354
            Closed as duplicate of#283
            Closed as duplicate of#283
            Internal error from py uninstall#354
            Description
            @pfmoore
            pfmoore
            opened on May 29, 2026
            Install source and version
            •  Installed from the Windows Store
            •  Installed with the MSIX from python.org
            •  Installed with the MSI from python.org
            •  Installed with winget install 9NQ7512CXL7T
            Version: 26.2
            Describe the bug
            py uninstall 3.10 does the uninstall, but reports an INTERNAL ERROR.
            To Reproduce
            
❯ py exec -3.10
            The signature for https://www.python.org/ftp/python/index-windows.json was successfully verified.
            
The signature for https://www.python.org/ftp/python/index-windows-recent.json was successfully verified.
            
The signature for https://www.python.org/ftp/python/index-windows-legacy.json was successfully verified.
            
Installing Python 3.10.11.
            
Extracting: ...................................................................✅
            
To see all available commands, run 'py help'
            Python 3.10.11 (tags/v3.10.11:7d4cc5a, Apr 5 2023, 00:38:17) [MSC v.1929 64 bit (AMD64)] on win32
            
Type "help", "copyright", "credits" or "license" for more information.
            ^Z
            ❯ py list
            
Tag Name Managed By Version Alias
            
3.14[-64] * Python 3.14.5 PythonCore 3.14.5 python3[-64].exe, python3.14[-64].exe
            
3.14t[-64] Python 3.14.5 (free-threaded) PythonCore 3.14.5 python3.14t[-64].exe, python3t[-64].exe
            
3.10[-64] Python 3.10.11 PythonCore 3.10.11 python3.10.exe
            
❯ py uninstall 3.10
            
Uninstall Python 3.10.11? [Y/n] y
            
Removed Python 3.10.11
            
[ERROR] INTERNAL ERROR: AttributeError: 'UninstallCommand' object has no attribute 'enable_entrypoints'
            Expected behavior
            
No internal error.
            Additional context
            
The behaviour appears to be fine (the uninstall worked), so the error is not a major issue in practice.
            Metadata
            Metadata
            Assignees
            No one assigned
              Labels
              No labels
              No labels
              Projects
              No projects
              Milestone
              No milestone
              Relationships
              None yet
              Development
              No branches or pull requests
              Issue actions
              
, '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); }
})();
})();
Internal error from `py uninstall` · Issue #354 · python/pymanager · GitHub
              Skip to content
              Internal error from py uninstall #354
              Closed as duplicate of#283
              Closed as duplicate of#283
              Internal error from py uninstall#354
              Description
              @pfmoore
              pfmoore
              opened on May 29, 2026
              Install source and version
              •  Installed from the Windows Store
              •  Installed with the MSIX from python.org
              •  Installed with the MSI from python.org
              •  Installed with winget install 9NQ7512CXL7T
              Version: 26.2
              Describe the bug
              py uninstall 3.10 does the uninstall, but reports an INTERNAL ERROR.
              To Reproduce
              
❯ py exec -3.10
              The signature for https://www.python.org/ftp/python/index-windows.json was successfully verified.
              
The signature for https://www.python.org/ftp/python/index-windows-recent.json was successfully verified.
              
The signature for https://www.python.org/ftp/python/index-windows-legacy.json was successfully verified.
              
Installing Python 3.10.11.
              
Extracting: ...................................................................✅
              
To see all available commands, run 'py help'
              Python 3.10.11 (tags/v3.10.11:7d4cc5a, Apr 5 2023, 00:38:17) [MSC v.1929 64 bit (AMD64)] on win32
              
Type "help", "copyright", "credits" or "license" for more information.
              ^Z
              ❯ py list
              
Tag Name Managed By Version Alias
              
3.14[-64] * Python 3.14.5 PythonCore 3.14.5 python3[-64].exe, python3.14[-64].exe
              
3.14t[-64] Python 3.14.5 (free-threaded) PythonCore 3.14.5 python3.14t[-64].exe, python3t[-64].exe
              
3.10[-64] Python 3.10.11 PythonCore 3.10.11 python3.10.exe
              
❯ py uninstall 3.10
              
Uninstall Python 3.10.11? [Y/n] y
              
Removed Python 3.10.11
              
[ERROR] INTERNAL ERROR: AttributeError: 'UninstallCommand' object has no attribute 'enable_entrypoints'
              Expected behavior
              
No internal error.
              Additional context
              
The behaviour appears to be fine (the uninstall worked), so the error is not a major issue in practice.
              Metadata
              Metadata
              Assignees
              No one assigned
                Labels
                No labels
                No labels
                Projects
                No projects
                Milestone
                No milestone
                Relationships
                None yet
                Development
                No branches or pull requests
                Issue actions