Jan 29, 2025 · Jan 29, 2025 · Jan 29, 2025
diff --git a/Lib/subprocess.py b/Lib/subprocess.py
 import builtins
 import errno
 import io
 import locale
 import os
 import time
 import signal
 import sys
 import threading
 import warnings

    def __str__(self):
        if self.returncode and self.returncode < 0:
            # Lazy import to improve module import time
            import signal
            try:
                return "Command '%s' died with %r." % (
                        self.cmd, signal.Signals(-self.returncode))
    if sys.flags.utf8_mode:
        return "utf-8"
    else:
        # Lazy import to improve module import time
        import locale
        return locale.getencoding()


            # Don't signal a process that we know has already died.
            if self.returncode is not None:
                return

            # Lazy import to improve module import time
            import signal
            if sig == signal.SIGTERM:
                self.terminate()
            elif sig == signal.CTRL_C_EVENT:
            """Execute program using os.posix_spawn()."""
            kwargs = {}
            if restore_signals:
                # Lazy import to improve module import time
                import signal

                # See _Py_RestoreSignals() in Python/pylifecycle.c
                sigset = []
                for signame in ('SIGPIPE', 'SIGXFZ', 'SIGXFSZ'):
        def terminate(self):
            """Terminate the process with SIGTERM
            """
            # Lazy import to improve module import time
            import signal
            self.send_signal(signal.SIGTERM)

        def kill(self):
            """Kill the process with SIGKILL
            """
            # Lazy import to improve module import time
            import signal
            self.send_signal(signal.SIGKILL)
diff --git a/Misc/NEWS.d/next/Library/2025-01-29-10-53-32.gh-issue-118761.i8wjpV.rst b/Misc/NEWS.d/next/Library/2025-01-29-10-53-32.gh-issue-118761.i8wjpV.rst
 Improve import time of :mod:`subprocess` by lazy importing ``locale`` and
 ``signal``. Patch by Taneli Hukkinen.
Original file line number	Diff line number	Diff line change
Expand Up		@@ -43,10 +43,8 @@
		import builtins
		import errno
		import io
		import locale
		import os
		import time
		import signal
		import sys
		import threading
		import warnings
Expand DownExpand Up		@@ -144,6 +142,8 @@ def __init__(self, returncode, cmd, output=None, stderr=None):

		def __str__(self):
		if self.returncode and self.returncode < 0:
		# Lazy import to improve module import time
		import signal
		try:
		return "Command '%s' died with %r." % (
		self.cmd, signal.Signals(-self.returncode))
Expand DownExpand Up		@@ -381,6 +381,8 @@ def _text_encoding():
		if sys.flags.utf8_mode:
		return "utf-8"
		else:
		# Lazy import to improve module import time
		import locale
		return locale.getencoding()


Expand DownExpand Up		@@ -1664,6 +1666,9 @@ def send_signal(self, sig):
		# Don't signal a process that we know has already died.
		if self.returncode is not None:
		return

		# Lazy import to improve module import time
		import signal
		if sig == signal.SIGTERM:
		self.terminate()
		elif sig == signal.CTRL_C_EVENT:
Expand DownExpand Up		@@ -1765,6 +1770,9 @@ def _posix_spawn(self, args, executable, env, restore_signals, close_fds,
		"""Execute program using os.posix_spawn()."""
		kwargs = {}
		if restore_signals:
		# Lazy import to improve module import time
		import signal

		# See _Py_RestoreSignals() in Python/pylifecycle.c
		sigset = []
		for signame in ('SIGPIPE', 'SIGXFZ', 'SIGXFSZ'):
Expand DownExpand Up		@@ -2214,9 +2222,13 @@ def send_signal(self, sig):
		def terminate(self):
		"""Terminate the process with SIGTERM
		"""
		# Lazy import to improve module import time
		import signal
		self.send_signal(signal.SIGTERM)

		def kill(self):
		"""Kill the process with SIGKILL
		"""
		# Lazy import to improve module import time
		import signal
		self.send_signal(signal.SIGKILL)
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,2 @@
		Improve import time of :mod:`subprocess` by lazy importing ``locale`` and
		``signal``. Patch by Taneli Hukkinen.