getpass.getpass not working with on windows when ctrl+v is used to enter the string

[AtulBagga]

BPO	37426
Nosy	@pfmoore, @tjguk, @zware, @eryksun, @zooba, @bhrutledge

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = None
closed_at = None
created_at = <Date 2019-06-27.09:49:37.372>
labels = ['3.11', 'type-bug', 'docs']
title = 'getpass.getpass not working with on windows when ctrl+v  is used to enter the string'
updated_at = <Date 2022-02-25.20:01:48.686>
user = 'https://bugs.python.org/AtulBagga'

bugs.python.org fields:

activity = <Date 2022-02-25.20:01:48.686>
actor = 'terry.reedy'
assignee = 'docs@python'
closed = False
closed_date = None
closer = None
components = ['Documentation']
creation = <Date 2019-06-27.09:49:37.372>
creator = 'Atul Bagga'
dependencies = []
files = []
hgrepos = []
issue_num = 37426
keywords = []
message_count = 8.0
messages = ['346721', '346727', '346867', '347126', '375819', '413993', '414012', '414024']
nosy_count = 9.0
nosy_names = ['paul.moore', 'tim.golden', 'docs@python', 'zach.ware', 'eryksun', 'steve.dower', 'Atul Bagga', 'brianhrutledge', 'W_M']
pr_nums = []
priority = 'normal'
resolution = None
stage = None
status = 'open'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue37426'
versions = ['Python 3.11']

[AtulBagga]

Detailed issue filed here - microsoft/knack#160

[eryksun]

getpass() reads from the console via msvcrt.getwch(). This is a raw console read, so Ctrl+V is read as the SYN (0x16) control character. Only the following keys are handled specially by getpass:

• Ctrl+C - raise KeyboardInterrupt
• Ctrl+H (backspace) - delete the previous character
• Ctrl+J (linefeed) and Ctrl+M (return) - return

getpass() behaves pretty much the same in a Linux terminal emulator, except Ctrl+H isn't backspace.

Recent versions of the console host in Windows 10 have an option to support pasting via Ctrl+Shift+V, regardless of the input mode. This is pretty common in Unix terminal emulators as well. You can change this setting in the Properties->Options dialog for a particular window or shortcut, or the default setting in the Defaults->Options dialog. In the "HKCU\Console" registry key, the DWORD value name is "InterceptCopyPaste".

[terryjreedy]

If anything, this seems to be a getpass doc issue.

[AtulBagga]

Suprisingly this works fine on ConEMU which I commonly use on windows though internally I still use powershell on conemu.
https://conemu.github.io/

It does not work on CMD and Powershell consoles.

[bhrutledge]

In addition to Ctrl+V, Shift+Insert also doesn't work. This behavior is the same Command Prompt and PowerShell on Windows 10.

Workarounds include:

• Clicking Edit > Paste from the window menu
• Enabling Properties > Options > Use Ctrl+Shift+C/V as Copy/Paste from the menu
• Use right-click to paste
• Using the new Windows Terminal: https://www.microsoft.com/en-us/p/windows-terminal/9n0dx20hk701

I stumbled upon this issue while investigating pypa/twine#671. Thanks for writing it up!