diff -r b2297669c065 -r 1f9bafeff96c src/eric7/SystemUtilities/PythonUtilities.py
--- a/src/eric7/SystemUtilities/PythonUtilities.py Wed Nov 29 11:33:32 2023 +0100
+++ b/src/eric7/SystemUtilities/PythonUtilities.py Wed Nov 29 14:27:25 2023 +0100
@@ -7,10 +7,14 @@
Module implementing Python related utility functions.
"""
+import contextlib
import os
+import platform
import sys
import sysconfig
+from .OSUtilities import isWindowsPlatform
+
def getPythonExecutable():
"""
@@ -135,3 +139,135 @@
pyVer = 3
return pyVer
+
+
+def searchInterpreters(environments=None):
+ """
+ Function to determine a list of all Python interpreters available via the
+ executable search path (i.e. PATH) (Windows variant).
+
+ @param environments list of environment directories to scan for Python interpreters
+ (defaults to None)
+ @type list of str (optional)
+ @return list of found interpreter executables
+ @rtype list of str
+ """
+ if isWindowsPlatform():
+ return __searchInterpreters_Windows(environments=environments)
+ else:
+ return __searchInterpreters_Linux(environments=environments)
+
+
+def __searchInterpreters_Windows(environments=None):
+ """
+ Function to determine a list of all Python interpreters available via the
+ executable search path (i.e. PATH) (Windows variant).
+
+ @param environments list of environment directories to scan for Python interpreters
+ (defaults to None)
+ @type list of str (optional)
+ @return list of found interpreter executables
+ @rtype list of str
+ """
+ try:
+ import winreg
+ except ImportError:
+ import _winreg as winreg # __IGNORE_WARNING__
+
+ def getExePath(branch, access, versionStr):
+ with contextlib.suppress(WindowsError, OSError):
+ software = winreg.OpenKey(branch, "Software", 0, access)
+ python = winreg.OpenKey(software, "Python", 0, access)
+ pcore = winreg.OpenKey(python, "PythonCore", 0, access)
+ version = winreg.OpenKey(pcore, versionStr, 0, access)
+ installpath = winreg.QueryValue(version, "InstallPath")
+ exe = os.path.join(installpath, "python.exe")
+ if os.access(exe, os.X_OK):
+ return exe
+
+ return None
+
+ minorVersions = range(8, 16) # Py 3.8 until Py 3.15
+ interpreters = set()
+
+ if environments:
+ for directory in [os.path.join(d, "Scripts") for d in environments]:
+ exe = os.path.join(directory, "python.exe")
+ if os.access(exe, os.X_OK):
+ interpreters.add(exe)
+
+ else:
+ versionSuffixes = ["", "-32", "-64"]
+ for minorVersion in minorVersions:
+ for versionSuffix in versionSuffixes:
+ versionStr = "{0}.{1}{2}".format(
+ "3", minorVersion, versionSuffix
+ )
+ exePath = getExePath(
+ winreg.HKEY_CURRENT_USER,
+ winreg.KEY_WOW64_32KEY | winreg.KEY_READ,
+ versionStr,
+ )
+ if exePath:
+ interpreters.add(exePath)
+
+ exePath = getExePath(
+ winreg.HKEY_LOCAL_MACHINE,
+ winreg.KEY_WOW64_32KEY | winreg.KEY_READ,
+ versionStr,
+ )
+ if exePath:
+ interpreters.add(exePath)
+
+ # Even on Intel 64-bit machines it's 'AMD64'
+ if platform.machine() == "AMD64":
+ exePath = getExePath(
+ winreg.HKEY_CURRENT_USER,
+ winreg.KEY_WOW64_64KEY | winreg.KEY_READ,
+ versionStr,
+ )
+ if exePath:
+ interpreters.add(exePath)
+
+ exePath = getExePath(
+ winreg.HKEY_LOCAL_MACHINE,
+ winreg.KEY_WOW64_64KEY | winreg.KEY_READ,
+ versionStr,
+ )
+ if exePath:
+ interpreters.add(exePath)
+
+ return list(interpreters)
+
+
+def __searchInterpreters_Linux(environments=None):
+ """
+ Function to determine a list of all Python interpreters available via the
+ executable search path (i.e. PATH) (non Windows variant).
+
+ @param environments list of environment directories to scan for Python interpreters
+ (defaults to None)
+ @type list of str (optional)
+ @return list of found interpreter executables
+ @rtype list of str
+ """
+ from eric7.SystemUtilities import OSUtilities
+
+ minorVersions = range(8, 16) # Py 3.8 until Py 3.15
+ interpreters = []
+
+ if environments:
+ directories = [os.path.join(d, "bin") for d in environments]
+ else:
+ searchpath = OSUtilities.getEnvironmentEntry("PATH")
+ directories = searchpath.split(os.pathsep) if searchpath else []
+
+ if directories:
+ pythonNames = ["python3.{0}".format(v) for v in minorVersions]
+ for directory in directories:
+ for interpreter in pythonNames:
+ exe = os.path.join(directory, interpreter)
+ if os.access(exe, os.X_OK):
+ interpreters.append(exe)
+
+ return interpreters
