pyperclip induces strange shell behavior

[ryneches]

Invoking pyperclip.copy() inside a script breaks the script's STDOUT redirection on the command line.

Create a file called copy.py :

#!/usr/bin/env python

import pyperclip
pyperclip.copy( 'hello world!' )
print( 'foo' )

Run the script from the terminal :

$ ./copy.py
foo
$

The paste buffer now contains the text "hello world!" However, if you try to capture STDOUT, the script hangs :

$ ./copy.py | grep bar
<<hangs>>

[zhaowb]

@ryneches I tried in a fresh virtualenv, can't repeat the problem. Versions tried: 3.7.13, 3.8.13, 3.9.13, 3.10.4, with pyenv. macOS 13.0.1 GNU bash, version 5.0.17(1)-release (x86_64-apple-darwin19.4.0)