#19953 Native client interferes with console for goals like `pants run ..` and `pants repl ...` Issue created by huonw Describe the bug The native client seems to interact poorly with the console, with symptoms like

getpass()

not squashing input, and Python repl `>>>`'s being buffered. Reproducer: 1. create the files (script below) 2. run

pants run example.py

, and type in a password. BUG:

getpass()

cannot control the terminal and emits warnings (below). As the warnings suggest, typing anything (e.g.

here's what I typed

) is echoed.

python3.11/getpass.py:91: GetPassWarning: Can not control echo on the terminal.
      passwd = fallback_getpass(prompt, stream)
    Warning: Password input may be echoed.
    Password: here's what I typed

3. run

pants repl example.py

, and type anything, e.g.

here's what I typed

. BUG: the prompt `>>>`s don't appear until quitting.

Python 3.11.4 (main, Jun 15 2023, 07:52:47) [Clang 14.0.0 (clang-1400.0.29.202)] on darwin
    Type "help", "copyright", "credits" or "license" for more information.
    (InteractiveConsole)
    here's what I typed
      File "<console>", line 1
        here's what I typed
            ^
    SyntaxError: incomplete input
    ^D
    now exiting InteractiveConsole...
    >>> >>> %

4. (run those comments with

PANTS_NO_NATIVE_CLIENT=1

and observe the behaviour is better: no warnings and

getpass()

can squash the input, and the repl prints

>>>

in the right places)

cat > pants.toml <<EOF
[GLOBAL]
pants_version = "2.17.0"

backend_packages = ["pants.backend.python"]

[python]
interpreter_constraints = ["==3.11.*"]
EOF
echo 'python_sources(name="src")' > BUILD
echo 'import getpass; getpass.getpass()' > example.py

Pants version 2.17.0, with the native client. OS macOS Additional info #16680 is kinda sorta related. pantsbuild/pants