Python: Create Terminal Doesn't Use Activate.ps1 in Powershell

[rafaci]

Environment data

• VS Code version: 1.37
• Extension version (available under the Extensions sidebar): 2019.8.29288
• OS and version: Windows 10 1903
• Python version (& distribution if applicable, e.g. Anaconda): Python 3.7.3 64-bit
• Type of virtual environment used (N/A | venv | virtualenv | conda | ...): venv
• Relevant/affected Python packages and their versions: N/A
• Jedi or Language Server? (i.e. what is "python.jediEnabled" set to; more info How to update the language server to the latest stable version #3977): Jedi

Expected behaviour

Running the Python: Create Terminal command should properly activate my terminal using Activate.ps1

I expect to see this

Windows PowerShell
Copyright (C) Microsoft Corporation. All rights reserved.

Try the new cross-platform PowerShell https://aka.ms/pscore6

Loading personal and system profiles took 1881ms.
D:\MyProject [master ≡ +1 ~7 -0 !]> d:/MyProject/venv/Scripts/Activate.ps1
D:\MyProject [master ≡ +1 ~7 -0 !]>

Actual behaviour

The command activates my terminal with activate.bat

This is what I see

Windows PowerShell
Copyright (C) Microsoft Corporation. All rights reserved.

Try the new cross-platform PowerShell https://aka.ms/pscore6

Loading personal and system profiles took 1881ms.
D:\MyProject [master ≡ +1 ~7 -0 !]> d:/MyProject/venv/Scripts/activate.bat
D:\MyProject [master ≡ +1 ~7 -0 !]>

Steps to reproduce:

1. Run the Python: Create Terminal command.

[PhilMacKay]

Hi! I confirm I have the same issue, but with small differences in the environment:
Environment data

• VS Code version: 1.36.1
• Extension version (available under the Extensions sidebar): 2019.8.29288
• OS and version: Windows 10 Pro 1903
• Python version (& distribution if applicable, e.g. Anaconda): Python 3.7.3 64-bit
• Type of virtual environment used (N/A | venv | virtualenv | conda | ...): venv
• Relevant/affected Python packages and their versions: N/A
• Jedi or Language Server? (i.e. what is "python.jediEnabled" set to; more info How to update the language server to the latest stable version #3977): affects both

It affects Powershell Core 6 as well as Powershell. One possible workaround is to switch default shell to cmd, but I prefer the flexibility of Powershell.
The other option is to stay on version 2019.6.24221, which is not affected by this bug.

[DonJayamanne]

@rafaci @PhilMacKay

• How did you create your virtual environment?
• Please could you open the developer tools window (Help-> Toggle Developer Tools)
  • Go back to VS Code
  • Open a Python file
  • GO back to developer tools window
  • Go to the Console tab
  • Clear everything out (there's a Clear Console icon on the top left)
  • Go back to VS Code
  • Select the command Python: Create Terminal
  • Go to the developer tools window and into the Console tab
  • Copy everything from the console output window
  • Paste it into this issue.

The information helps us identify the type of the shell being detected by the extension.

[PhilMacKay]

@DonJayamanne

I created the environment with this line inside a batch script:
py -3.7-64 -m venv --clear --copies ..\\envMyProject

By following your instructions, I have the following output. Seems like the core of the problem comes from the following: [Error: [ms-python.python]: Proposed API is only available when running out of dev or with the following command line switch: --enable-proposed-api ms-python.python

console.ts:134 [Extension Host] Info Python Extension: 2019-08-12 17:16:18: [object Object]. Shell identified as undefined 
console.ts:134 [Extension Host] Error Python Extension: 2019-08-12 17:16:18: Unable to determine shell using VS Code API. [Error: [ms-python.python]: Proposed API is only available when running out of dev or with the following command line switch: --enable-proposed-api ms-python.python	at a (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:472:367)	at Object.t.checkProposedApiEnabled (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:473:343)	at Object.get shell [as shell] (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:726:799)	at p.get shell [as shell] (C:\Users\PhilMacKay\.vscode\extensions\ms-python.python-2019.8.29288\out\client\extension.js:75:305726)	at u.identify (C:\Users\PhilMacKay\.vscode\extensions\ms-python.python-2019.8.29288\out\client\extension.js:75:445660)	at p.identifyTerminalShell (C:\Users\PhilMacKay\.vscode\extensions\ms-python.python-2019.8.29288\out\client\extension.js:75:440845)	at m.identifyTerminalShell (C:\Users\PhilMacKay\.vscode\extensions\ms-python.python-2019.8.29288\out\client\extension.js:75:437149)	at f.ensureTerminal (C:\Users\PhilMacKay\.vscode\extensions\ms-python.python-2019.8.29288\out\client\extension.js:75:435275)	at f.show (C:\Users\PhilMacKay\.vscode\extensions\ms-python.python-2019.8.29288\out\client\extension.js:75:435149)	at l.onCreateTerminal (C:\Users\PhilMacKay\.vscode\extensions\ms-python.python-2019.8.29288\out\client\extension.js:75:898642)	at l.module.exports.t.captureTelemetry.o.value (C:\Users\PhilMacKay\.vscode\extensions\ms-python.python-2019.8.29288\out\client\extension.js:1:8867)	at f._executeContributedCommand (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:503:621)	at f.$executeContributedCommand (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:504:6)	at d._doInvokeHandler (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:653:1006)	at d._invokeHandler (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:653:698)	at d._receiveRequest (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:652:346)	at d._receiveOneMessage (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:651:141)	at define.constructor._protocol.onMessage.e (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:649:400)	at u.fire (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:48:468)	at a (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:177:627)	at e (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:177:673)	at u.fire (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:48:468)	at n.constructor.e.onMessage.e (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:758:621)	at u.fire (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:48:468)	at a (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:177:627)	at e (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:177:673)	at u.fire (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:48:468)	at y._receiveMessage (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:186:545)	at define.constructor._socketDisposables.push._socketReader.onMessage.e (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:183:860)	at u.fire (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:48:468)	at f.acceptChunk (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:180:393)	at define.constructor._register._socket.onData.e (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:179:731)	at Socket.t (c:\Program Files\Microsoft VS Code\resources\app\out\vs\workbench\services\extensions\node\extensionHostProcess.js:188:22)	at Socket.emit (events.js:182:13)	at addChunk (_stream_readable.js:283:12)	at readableAddChunk (_stream_readable.js:264:11)	at Socket.Readable.push (_stream_readable.js:219:10)	at Pipe.onStreamRead [as onread] (internal/stream_base_commons.js:94:17)]
t.log @ console.ts:134
$logExtensionHostMessage @ mainThreadConsole.ts:38
_doInvokeHandler @ rpcProtocol.ts:394
_invokeHandler @ rpcProtocol.ts:379
_receiveRequest @ rpcProtocol.ts:299
_receiveOneMessage @ rpcProtocol.ts:226
_protocol.onMessage.e @ rpcProtocol.ts:101
fire @ event.ts:558
a @ ipc.net.ts:421
e @ ipc.net.ts:428
fire @ event.ts:558
_receiveMessage @ ipc.net.ts:715
S._socketDisposables.push._socketReader.onMessage.e @ ipc.net.ts:578
fire @ event.ts:558
acceptChunk @ ipc.net.ts:236
_register._socket.onData.e @ ipc.net.ts:197
t @ ipc.net.ts:28
emit @ events.js:182
addChunk @ _stream_readable.js:283
readableAddChunk @ _stream_readable.js:264
Readable.push @ _stream_readable.js:219
onStreamRead @ internal/stream_base_commons.js:94
console.ts:134 [Extension Host] Info Python Extension: 2019-08-12 17:16:18: [object Object]. Shell identified as undefined 
console.ts:134 [Extension Host] Info Python Extension: 2019-08-12 17:16:18: Shell path 'C:\Program Files\PowerShell\6\pwsh.exe'
console.ts:134 [Extension Host] Info Python Extension: 2019-08-12 17:16:18: Shell path identified as shell 'powershellCore'
console.ts:134 [Extension Host] Info Python Extension: 2019-08-12 17:16:18: Shell path from user settings 'C:\Program Files\PowerShell\6\pwsh.exe'
console.ts:134 [Extension Host] Info Python Extension: 2019-08-12 17:16:18: [object Object]. Shell identified as powershellCore 
console.ts:134 [Extension Host] Info Python Extension: 2019-08-12 17:16:18: Shell identified as 'powershellCore'
c:\Program Files\Microsoft VS Code\resources\app\node_modules.asar\xterm\lib\xterm.js:1 [Violation] Added non-passive event listener to a scroll-blocking 'wheel' event. Consider marking event handler as 'passive' to make the page more responsive. See https://www.chromestatus.com/feature/5745543795965952
t.addDisposableDomListener @ c:\Program Files\Microsoft VS Code\resources\app\node_modules.asar\xterm\lib\xterm.js:1
t.bindMouse @ c:\Program Files\Microsoft VS Code\resources\app\node_modules.asar\xterm\lib\xterm.js:1
t.open @ c:\Program Files\Microsoft VS Code\resources\app\node_modules.asar\xterm\lib\xterm.js:1
e.open @ c:\Program Files\Microsoft VS Code\resources\app\node_modules.asar\xterm\lib\xterm.js:1
_xtermReadyPromise.then @ terminalInstance.ts:548
_tickCallback @ internal/process/next_tick.js:68
c:\Program Files\Microsoft VS Code\resources\app\node_modules.asar\xterm\lib\xterm.js:1 [Violation] Added non-passive event listener to a scroll-blocking 'wheel' event. Consider marking event handler as 'passive' to make the page more responsive. See https://www.chromestatus.com/feature/5745543795965952
t.addDisposableDomListener @ c:\Program Files\Microsoft VS Code\resources\app\node_modules.asar\xterm\lib\xterm.js:1
t.bindMouse @ c:\Program Files\Microsoft VS Code\resources\app\node_modules.asar\xterm\lib\xterm.js:1
t.open @ c:\Program Files\Microsoft VS Code\resources\app\node_modules.asar\xterm\lib\xterm.js:1
e.open @ c:\Program Files\Microsoft VS Code\resources\app\node_modules.asar\xterm\lib\xterm.js:1
_xtermReadyPromise.then @ terminalInstance.ts:548
_tickCallback @ internal/process/next_tick.js:68
c:\Program Files\Microsoft VS Code\resources\app\node_modules.asar\xterm\lib\xterm.js:1 [Violation] Added non-passive event listener to a scroll-blocking 'touchstart' event. Consider marking event handler as 'passive' to make the page more responsive. See https://www.chromestatus.com/feature/5745543795965952
t.addDisposableDomListener @ c:\Program Files\Microsoft VS Code\resources\app\node_modules.asar\xterm\lib\xterm.js:1
t.bindMouse @ c:\Program Files\Microsoft VS Code\resources\app\node_modules.asar\xterm\lib\xterm.js:1
t.open @ c:\Program Files\Microsoft VS Code\resources\app\node_modules.asar\xterm\lib\xterm.js:1
e.open @ c:\Program Files\Microsoft VS Code\resources\app\node_modules.asar\xterm\lib\xterm.js:1
_xtermReadyPromise.then @ terminalInstance.ts:548
_tickCallback @ internal/process/next_tick.js:68
c:\Program Files\Microsoft VS Code\resources\app\node_modules.asar\xterm\lib\xterm.js:1 [Violation] Added non-passive event listener to a scroll-blocking 'touchmove' event. Consider marking event handler as 'passive' to make the page more responsive. See https://www.chromestatus.com/feature/5745543795965952
t.addDisposableDomListener @ c:\Program Files\Microsoft VS Code\resources\app\node_modules.asar\xterm\lib\xterm.js:1
t.bindMouse @ c:\Program Files\Microsoft VS Code\resources\app\node_modules.asar\xterm\lib\xterm.js:1
t.open @ c:\Program Files\Microsoft VS Code\resources\app\node_modules.asar\xterm\lib\xterm.js:1
e.open @ c:\Program Files\Microsoft VS Code\resources\app\node_modules.asar\xterm\lib\xterm.js:1
_xtermReadyPromise.then @ terminalInstance.ts:548
_tickCallback @ internal/process/next_tick.js:68
console.ts:134 [Extension Host] Info Python Extension: 2019-08-12 17:16:18: Shell path 'Python'
console.ts:134 [Extension Host] Info Python Extension: 2019-08-12 17:16:18: Shell path identified as shell 'other'
console.ts:134 [Extension Host] Info Python Extension: 2019-08-12 17:16:18: Terminal name 'Python' identified as shell 'other'
console.ts:134 [Extension Host] Info Python Extension: 2019-08-12 17:16:18: [object Object]. Shell identified as other (Terminal name is Python)
console.ts:134 [Extension Host] Info Python Extension: 2019-08-12 17:16:18: Shell identified as 'other'
console.ts:134 [Extension Host] Info Python Extension: 2019-08-12 17:16:18: Using default OS shell
2console.ts:134 [Extension Host] Info Python Extension: 2019-08-12 17:16:18: Cached data exists getEnvironmentVariables, c:\Sources\MyProject

Notice, however, that when using the command Terminal: Create New Integrated Terminal, the virtual environment is correctly activated using the .ps1 script.

[rafaci]

Here's the output I get for version 2019.8.30787 (broken)

console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: [object Object]. Shell identified as undefined 
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: Shell path 'C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: Shell path identified as shell 'powershell'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: Terminal shell path 'C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe' identified as shell 'powershell'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: [object Object]. Shell identified as powershell 
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: Shell identified as 'powershell'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: Shell path 'Python'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: Shell path identified as shell 'other'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: Terminal name 'Python' identified as shell 'other'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: [object Object]. Shell identified as other (Terminal name is Python)
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: Shell identified as 'other'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: Using default OS shell
2console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: Cached data exists getEnvironmentVariables, d:\VSCodeSandbox\test.py
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: Shell path 'Python'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: Shell path identified as shell 'other'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: Terminal name 'Python' identified as shell 'other'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: [object Object]. Shell identified as other (Terminal name is Python)
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: Shell identified as 'other'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: Using default OS shell
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: Shell path 'Python'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: Shell path identified as shell 'other'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: Terminal name 'Python' identified as shell 'other'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: [object Object]. Shell identified as other (Terminal name is Python)
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: Shell identified as 'other'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:23:42: Using default OS shell

Here's the output I get with version 2019.6.24221 (working)

[Extension Host] Info Python Extension: 2019-08-15 13:25:46: Shell path from user settings 'null'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Shell path 'C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Shell path identified as shell 'powershell'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Shell path from user env 'C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Shell identified as 'powershell'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Terminal name 'Python' identified as shell 'other'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Shell path from user settings 'null'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Shell path 'C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Shell path identified as shell 'powershell'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Shell path from user env 'C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Shell identified as 'powershell'
2console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Cached data exists getEnvironmentVariables, d:\VSCodeSandbox\test.py
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Terminal name 'Python' identified as shell 'other'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Shell path from user settings 'null'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Shell path 'C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Shell path identified as shell 'powershell'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Shell path from user env 'C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Shell identified as 'powershell'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Cached data exists getEnvironmentVariables, d:\VSCodeSandbox\test.py
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Terminal name 'Python' identified as shell 'other'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Shell path from user settings 'null'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Shell path 'C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Shell path identified as shell 'powershell'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Shell path from user env 'C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Shell identified as 'powershell'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Cached data exists getEnvironmentVariables, d:\VSCodeSandbox
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Cached data exists getEnvironmentVariables, d:\VSCodeSandbox\test.py
console.ts:137 [Extension Host] Info Python Extension: 2019-08-15 13:25:46: Cached data exists getEnvironmentVariables, d:\VSCodeSandbox

[marsfan]

Just want to add to this I have been having the same issue.

Perhaps the best way to fix this would be to call venv/Scripts/activate as opposed to activate.ps1 or activate.bat, as this file will be present irregardless of what terminal is being used to activate the venv, and always works (in my experience) I have looked at the source for this extension as I have considered changing this myself, but I do not know typescript, and cannot figure out how I would do this myself.

[DonJayamanne]

@PhilMacKay Please could you try upgrading your version of VS Code to the latest version (1.37)

[PhilMacKay]

Gladly! Here is the log using

• VSCode version 1.37.1
• Python extension version 2019.8.30787
• Python version 3.7.3 x64
• Windows 10 Pro version 1903
• Using venv for virtual environment
• Using Powershell: "terminal.integrated.shell.windows": "C:\\WINDOWS\\System32\\WindowsPowerShell\\v1.0\\powershell.exe":

[Extension Host] Info Python Extension: 2019-08-19 18:27:57: [object Object]. Shell identified as undefined 
console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:27:57: Shell path 'C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:27:57: Shell path identified as shell 'powershell'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:27:57: Terminal shell path 'C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe' identified as shell 'powershell'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:27:57: [object Object]. Shell identified as powershell 
console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:27:57: Shell identified as 'powershell'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:27:57: Shell path 'Python'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:27:57: Shell path identified as shell 'other'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:27:57: Terminal name 'Python' identified as shell 'other'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:27:57: [object Object]. Shell identified as other (Terminal name is Python)
console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:27:57: Shell identified as 'other'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:27:57: Using default OS shell
2console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:27:57: Cached data exists getEnvironmentVariables, c:\sources\MyProject    

Same thing but with PowerShell Core 6 ("terminal.integrated.shell.windows": "C:\\Program Files\\PowerShell\\6\\pwsh.exe")

[Extension Host] Info Python Extension: 2019-08-19 18:36:55: [object Object]. Shell identified as undefined 
console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:36:55: Shell path 'C:\Program Files\PowerShell\6\pwsh.exe'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:36:55: Shell path identified as shell 'powershellCore'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:36:55: Terminal shell path 'C:\Program Files\PowerShell\6\pwsh.exe' identified as shell 'powershellCore'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:36:55: [object Object]. Shell identified as powershellCore 
console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:36:55: Shell identified as 'powershellCore'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:36:55: Shell path 'Python'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:36:55: Shell path identified as shell 'other'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:36:55: Terminal name 'Python' identified as shell 'other'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:36:55: [object Object]. Shell identified as other (Terminal name is Python)
console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:36:55: Shell identified as 'other'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:36:55: Using default OS shell
2console.ts:137 [Extension Host] Info Python Extension: 2019-08-19 18:36:55: Cached data exists getEnvironmentVariables, c:\sources\MyProject

[silverches]

I seem to be having the same issue

Environment data

• VS Code version: 1.37.1
• Extension version (available under the Extensions sidebar): 2019.8.30787
• OS and version: Windows 10 Pro 10.0.18362 Build 18362
• Python version (& distribution if applicable, e.g. Anaconda): Python 3.7.2 32 bit
• Type of virtual environment used (N/A | venv | virtualenv | conda | ...): venv

[Extension Host] Info Python Extension: 2019-08-20 13:30:23: [object Object]. Shell identified as undefined 
console.ts:137 [Extension Host] Info Python Extension: 2019-08-20 13:30:23: Shell path 'C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-20 13:30:23: Shell path identified as shell 'powershell'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-20 13:30:23: Terminal shell path 'C:\WINDOWS\System32\WindowsPowerShell\v1.0\powershell.exe' identified as shell 'powershell'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-20 13:30:23: [object Object]. Shell identified as powershell 
console.ts:137 [Extension Host] Info Python Extension: 2019-08-20 13:30:23: Shell identified as 'powershell'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-20 13:30:23: Shell path 'Python'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-20 13:30:23: Shell path identified as shell 'other'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-20 13:30:23: Terminal name 'Python' identified as shell 'other'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-20 13:30:23: [object Object]. Shell identified as other (Terminal name is Python)
console.ts:137 [Extension Host] Info Python Extension: 2019-08-20 13:30:23: Shell identified as 'other'
console.ts:137 [Extension Host] Info Python Extension: 2019-08-20 13:30:23: Using default OS shell
2console.ts:137 [Extension Host] Info Python Extension: 2019-08-20 13:30:23: Cached data exists getEnvironmentVariables, c:\Users\rick\Documents\Online authoring\webapp\models\entity.py

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PS C:\Users\rick\Documents\Online authoring> "c:/Users/rick/Documents/Online authoring/venv/Scripts/activate.bat"
c:/Users/rick/Documents/Online authoring/venv/Scripts/activate.bat
PS C:\Users\rick\Documents\Online authoring>