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Title: gh-90092: Support multiple terminals in the curses module by serhiy-storchaka · Pull Request #151748 · python/cpython · GitHub

Open Graph Title: gh-90092: Support multiple terminals in the curses module by serhiy-storchaka · Pull Request #151748 · python/cpython

X Title: gh-90092: Support multiple terminals in the curses module by serhiy-storchaka · Pull Request #151748 · python/cpython

Description: Add the X/Open Curses SCREEN API for driving more than one terminal: curses.newterm() and curses.set_term(), plus the ncurses extension curses.new_prescr(). A new screen object wraps the C SCREEN and exposes the terminal's standard window as screen.stdscr. Each window keeps a reference to its screen (like a subwindow does to its parent window), so a screen is freed automatically once it and all of its windows are unreferenced. delscreen() is deferred to the screen object's deallocation rather than its tp_clear, so it runs only after the screen's windows — and any panels built on them — are gone. The ncurses use_screen()/use_window() locking helpers are exposed as the screen.use() and window.use() methods, forwarding *args and **kwargs to the callable. ScreenTests now run in-process over pseudo-terminals instead of subprocesses, and TestCurses drives a newterm() screen, so the new API is exercised without needing a second real terminal. 🤖 Generated with Claude Code Issue: gh-90092

Open Graph Description: Add the X/Open Curses SCREEN API for driving more than one terminal: curses.newterm() and curses.set_term(), plus the ncurses extension curses.new_prescr(). A new screen object wraps the C SCREEN a...

X Description: Add the X/Open Curses SCREEN API for driving more than one terminal: curses.newterm() and curses.set_term(), plus the ncurses extension curses.new_prescr(). A new screen object wraps the C SCREEN a...

Opengraph URL: https://github.com/python/cpython/pull/151748

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0028058 gh-90092: Support multiple terminals in the curses module serhiy-storchaka Jun 19, 2026 https://github.com/python/cpython/pull/151748/commits/00280581e4423f77e01ca23d471783cde4a7dfbc
d27487e Drain the pty masters in ScreenTests and release the GIL in endwin() serhiy-storchaka Jun 19, 2026 https://github.com/python/cpython/pull/151748/commits/d27487e2f39e34b9572c17e2bfdd65a93c0e91c5
6d48237 Drain the pty masters continuously from a background thread serhiy-storchaka Jun 20, 2026 https://github.com/python/cpython/pull/151748/commits/6d4823707cd5642830a61990fd9595612a0c3bc3
228f977 Close the pty master before the slave in ScreenTests serhiy-storchaka Jun 20, 2026 https://github.com/python/cpython/pull/151748/commits/228f9771d6bf52a42bd6273b3215ef5a4c96b8a8
2165c49 Stop the pty reader thread before closing the fds in ScreenTests serhiy-storchaka Jun 20, 2026 https://github.com/python/cpython/pull/151748/commits/2165c4962356540202bcbc0c6a40ab3ee72de854
03f0d8c Collect each test's screen reference cycle in TestCurses serhiy-storchaka Jun 20, 2026 https://github.com/python/cpython/pull/151748/commits/03f0d8c9835e796f5108f524aee9f21296d79c87
6fb6465 Add screen.close() to break the screen/window reference cycle serhiy-storchaka Jun 20, 2026 https://github.com/python/cpython/pull/151748/commits/6fb6465daf6c296defcfd390a07e2dc0552e51b8
b3792c3 Clean up the panel created by test_userptr_segfault serhiy-storchaka Jun 20, 2026 https://github.com/python/cpython/pull/151748/commits/b3792c3e7e3b6ced28a8c2072ab9cadfbdad5867
fd73570 Merge branch 'main' into curses-newterm serhiy-storchaka Jun 24, 2026 https://github.com/python/cpython/pull/151748/commits/fd73570524770cc097816de889dbe2745b24d496
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