import copy import ntpath import pathlib import posixpath import sys import unittest from test.support import verbose try: # If we are in a source tree, use the original source file for tests SOURCE = (pathlib.Path(__file__).absolute().parent.parent.parent / "Modules/getpath.py").read_bytes() except FileNotFoundError: # Try from _testcapimodule instead from _testinternalcapi import get_getpath_codeobject SOURCE = get_getpath_codeobject() class MockGetPathTests(unittest.TestCase): def __init__(self, *a, **kw): super().__init__(*a, **kw) self.maxDiff = None def test_normal_win32(self): "Test a 'standard' install layout on Windows." ns = MockNTNamespace( argv0=r"C:\Python\python.exe", real_executable=r"C:\Python\python.exe", ) ns.add_known_xfile(r"C:\Python\python.exe") ns.add_known_file(r"C:\Python\Lib\os.py") ns.add_known_dir(r"C:\Python\DLLs") expected = dict( executable=r"C:\Python\python.exe", base_executable=r"C:\Python\python.exe", prefix=r"C:\Python", exec_prefix=r"C:\Python", module_search_paths_set=1, module_search_paths=[ r"C:\Python\python98.zip", r"C:\Python\Lib", r"C:\Python\DLLs", ], ) actual = getpath(ns, expected) self.assertEqual(expected, actual) def test_buildtree_win32(self): "Test an in-build-tree layout on Windows." ns = MockNTNamespace( argv0=r"C:\CPython\PCbuild\amd64\python.exe", real_executable=r"C:\CPython\PCbuild\amd64\python.exe", ) ns.add_known_xfile(r"C:\CPython\PCbuild\amd64\python.exe") ns.add_known_file(r"C:\CPython\Lib\os.py") ns.add_known_file(r"C:\CPython\PCbuild\amd64\pybuilddir.txt", [""]) expected = dict( executable=r"C:\CPython\PCbuild\amd64\python.exe", base_executable=r"C:\CPython\PCbuild\amd64\python.exe", prefix=r"C:\CPython", exec_prefix=r"C:\CPython", build_prefix=r"C:\CPython", _is_python_build=1, module_search_paths_set=1, module_search_paths=[ r"C:\CPython\PCbuild\amd64\python98.zip", r"C:\CPython\Lib", r"C:\CPython\PCbuild\amd64", ], ) actual = getpath(ns, expected) self.assertEqual(expected, actual) def test_venv_win32(self): """Test a venv layout on Windows. This layout is discovered by the presence of %__PYVENV_LAUNCHER__%, specifying the original launcher executable. site.py is responsible for updating prefix and exec_prefix. """ ns = MockNTNamespace( argv0=r"C:\Python\python.exe", ENV___PYVENV_LAUNCHER__=r"C:\venv\Scripts\python.exe", real_executable=r"C:\Python\python.exe", ) ns.add_known_xfile(r"C:\Python\python.exe") ns.add_known_xfile(r"C:\venv\Scripts\python.exe") ns.add_known_file(r"C:\Python\Lib\os.py") ns.add_known_dir(r"C:\Python\DLLs") ns.add_known_file(r"C:\venv\pyvenv.cfg", [ r"home = C:\Python" ]) expected = dict( executable=r"C:\venv\Scripts\python.exe", prefix=r"C:\Python", exec_prefix=r"C:\Python", base_executable=r"C:\Python\python.exe", base_prefix=r"C:\Python", base_exec_prefix=r"C:\Python", module_search_paths_set=1, module_search_paths=[ r"C:\Python\python98.zip", r"C:\Python\DLLs", r"C:\Python\Lib", r"C:\Python", ], ) actual = getpath(ns, expected) self.assertEqual(expected, actual) def test_registry_win32(self): """Test registry lookup on Windows. On Windows there are registry entries that are intended for other applications to register search paths. """ hkey = rf"HKLM\Software\Python\PythonCore\9.8-XY\PythonPath" winreg = MockWinreg({ hkey: None, f"{hkey}\\Path1": "path1-dir", f"{hkey}\\Path1\\Subdir": "not-subdirs", }) ns = MockNTNamespace( argv0=r"C:\Python\python.exe", real_executable=r"C:\Python\python.exe", winreg=winreg, ) ns.add_known_xfile(r"C:\Python\python.exe") ns.add_known_file(r"C:\Python\Lib\os.py") ns.add_known_dir(r"C:\Python\DLLs") expected = dict( module_search_paths_set=1, module_search_paths=[ r"C:\Python\python98.zip", "path1-dir", # should not contain not-subdirs r"C:\Python\Lib", r"C:\Python\DLLs", ], ) actual = getpath(ns, expected) self.assertEqual(expected, actual) ns["config"]["use_environment"] = 0 ns["config"]["module_search_paths_set"] = 0 ns["config"]["module_search_paths"] = None expected = dict( module_search_paths_set=1, module_search_paths=[ r"C:\Python\python98.zip", r"C:\Python\Lib", r"C:\Python\DLLs", ], ) actual = getpath(ns, expected) self.assertEqual(expected, actual) def test_symlink_normal_win32(self): "Test a 'standard' install layout via symlink on Windows." ns = MockNTNamespace( argv0=r"C:\LinkedFrom\python.exe", real_executable=r"C:\Python\python.exe", ) ns.add_known_xfile(r"C:\LinkedFrom\python.exe") ns.add_known_xfile(r"C:\Python\python.exe") ns.add_known_link(r"C:\LinkedFrom\python.exe", r"C:\Python\python.exe") ns.add_known_file(r"C:\Python\Lib\os.py") ns.add_known_dir(r"C:\Python\DLLs") expected = dict( executable=r"C:\LinkedFrom\python.exe", base_executable=r"C:\LinkedFrom\python.exe", prefix=r"C:\Python", exec_prefix=r"C:\Python", module_search_paths_set=1, module_search_paths=[ r"C:\Python\python98.zip", r"C:\Python\Lib", r"C:\Python\DLLs", ], ) actual = getpath(ns, expected) self.assertEqual(expected, actual) def test_symlink_buildtree_win32(self): "Test an in-build-tree layout via symlink on Windows." ns = MockNTNamespace( argv0=r"C:\LinkedFrom\python.exe", real_executable=r"C:\CPython\PCbuild\amd64\python.exe", ) ns.add_known_xfile(r"C:\LinkedFrom\python.exe") ns.add_known_xfile(r"C:\CPython\PCbuild\amd64\python.exe") ns.add_known_link(r"C:\LinkedFrom\python.exe", r"C:\CPython\PCbuild\amd64\python.exe") ns.add_known_file(r"C:\CPython\Lib\os.py") ns.add_known_file(r"C:\CPython\PCbuild\amd64\pybuilddir.txt", [""]) expected = dict( executable=r"C:\LinkedFrom\python.exe", base_executable=r"C:\LinkedFrom\python.exe", prefix=r"C:\CPython", exec_prefix=r"C:\CPython", build_prefix=r"C:\CPython", _is_python_build=1, module_search_paths_set=1, module_search_paths=[ r"C:\CPython\PCbuild\amd64\python98.zip", r"C:\CPython\Lib", r"C:\CPython\PCbuild\amd64", ], ) actual = getpath(ns, expected) self.assertEqual(expected, actual) def test_buildtree_pythonhome_win32(self): "Test an out-of-build-tree layout on Windows with PYTHONHOME override." ns = MockNTNamespace( argv0=r"C:\Out\python.exe", real_executable=r"C:\Out\python.exe", ENV_PYTHONHOME=r"C:\CPython", ) ns.add_known_xfile(r"C:\Out\python.exe") ns.add_known_file(r"C:\CPython\Lib\os.py") ns.add_known_file(r"C:\Out\pybuilddir.txt", [""]) expected = dict( executable=r"C:\Out\python.exe", base_executable=r"C:\Out\python.exe", prefix=r"C:\CPython", exec_prefix=r"C:\CPython", # This build_prefix is a miscalculation, because we have # moved the output direction out of the prefix. # Specify PYTHONHOME to get the correct prefix/exec_prefix build_prefix="C:\\", _is_python_build=1, module_search_paths_set=1, module_search_paths=[ r"C:\Out\python98.zip", r"C:\CPython\Lib", r"C:\Out", ], ) actual = getpath(ns, expected) self.assertEqual(expected, actual) def test_normal_posix(self): "Test a 'standard' install layout on *nix" ns = MockPosixNamespace( PREFIX="/usr", argv0="python", ENV_PATH="/usr/bin", ) ns.add_known_xfile("/usr/bin/python") ns.add_known_file("/usr/lib/python9.8/os.py") ns.add_known_dir("/usr/lib/python9.8/lib-dynload") expected = dict( executable="/usr/bin/python", base_executable="/usr/bin/python", prefix="/usr", exec_prefix="/usr", module_search_paths_set=1, module_search_paths=[ "/usr/lib/python98.zip", "/usr/lib/python9.8", "/usr/lib/python9.8/lib-dynload", ], ) actual = getpath(ns, expected) self.assertEqual(expected, actual) def test_buildpath_posix(self): """Test an in-build-tree layout on POSIX. This layout is discovered from the presence of pybuilddir.txt, which contains the relative path from the executable's directory to the platstdlib path. """ ns = MockPosixNamespace( argv0=r"/home/cpython/python", PREFIX="/usr/local", ) ns.add_known_xfile("/home/cpython/python") ns.add_known_xfile("/usr/local/bin/python") ns.add_known_file("/home/cpython/pybuilddir.txt", ["build/lib.linux-x86_64-9.8"]) ns.add_known_file("/home/cpython/Lib/os.py") ns.add_known_dir("/home/cpython/lib-dynload") expected = dict( executable="/home/cpython/python", prefix="/usr/local", exec_prefix="/usr/local", base_executable="/home/cpython/python", build_prefix="/home/cpython", _is_python_build=1, module_search_paths_set=1, module_search_paths=[ "/usr/local/lib/python98.zip", "/home/cpython/Lib", "/home/cpython/build/lib.linux-x86_64-9.8", ], ) actual = getpath(ns, expected) self.assertEqual(expected, actual) def test_venv_posix(self): "Test a venv layout on *nix." ns = MockPosixNamespace( argv0="python", PREFIX="/usr", ENV_PATH="/venv/bin:/usr/bin", ) ns.add_known_xfile("/usr/bin/python") ns.add_known_xfile("/venv/bin/python") ns.add_known_file("/usr/lib/python9.8/os.py") ns.add_known_dir("/usr/lib/python9.8/lib-dynload") ns.add_known_file("/venv/pyvenv.cfg", [ r"home = /usr/bin" ]) expected = dict( executable="/venv/bin/python", prefix="/usr", exec_prefix="/usr", base_executable="/usr/bin/python", base_prefix="/usr", base_exec_prefix="/usr", module_search_paths_set=1, module_search_paths=[ "/usr/lib/python98.zip", "/usr/lib/python9.8", "/usr/lib/python9.8/lib-dynload", ], ) actual = getpath(ns, expected) self.assertEqual(expected, actual) def test_symlink_normal_posix(self): "Test a 'standard' install layout via symlink on *nix" ns = MockPosixNamespace( PREFIX="/usr", argv0="/linkfrom/python", ) ns.add_known_xfile("/linkfrom/python") ns.add_known_xfile("/usr/bin/python") ns.add_known_link("/linkfrom/python", "/usr/bin/python") ns.add_known_file("/usr/lib/python9.8/os.py") ns.add_known_dir("/usr/lib/python9.8/lib-dynload") expected = dict( executable="/linkfrom/python", base_executable="/linkfrom/python", prefix="/usr", exec_prefix="/usr", module_search_paths_set=1, module_search_paths=[ "/usr/lib/python98.zip", "/usr/lib/python9.8", "/usr/lib/python9.8/lib-dynload", ], ) actual = getpath(ns, expected) self.assertEqual(expected, actual) def test_symlink_buildpath_posix(self): """Test an in-build-tree layout on POSIX. This layout is discovered from the presence of pybuilddir.txt, which contains the relative path from the executable's directory to the platstdlib path. """ ns = MockPosixNamespace( argv0=r"/linkfrom/python", PREFIX="/usr/local", ) ns.add_known_xfile("/linkfrom/python") ns.add_known_xfile("/home/cpython/python") ns.add_known_link("/linkfrom/python", "/home/cpython/python") ns.add_known_xfile("/usr/local/bin/python") ns.add_known_file("/home/cpython/pybuilddir.txt", ["build/lib.linux-x86_64-9.8"]) ns.add_known_file("/home/cpython/Lib/os.py") ns.add_known_dir("/home/cpython/lib-dynload") expected = dict( executable="/linkfrom/python", prefix="/usr/local", exec_prefix="/usr/local", base_executable="/linkfrom/python", build_prefix="/home/cpython", _is_python_build=1, module_search_paths_set=1, module_search_paths=[ "/usr/local/lib/python98.zip", "/home/cpython/Lib", "/home/cpython/build/lib.linux-x86_64-9.8", ], ) actual = getpath(ns, expected) self.assertEqual(expected, actual) def test_custom_platlibdir_posix(self): "Test an install with custom platlibdir on *nix" ns = MockPosixNamespace( PREFIX="/usr", argv0="/linkfrom/python", PLATLIBDIR="lib64", ) ns.add_known_xfile("/usr/bin/python") ns.add_known_file("/usr/lib64/python9.8/os.py") ns.add_known_dir("/usr/lib64/python9.8/lib-dynload") expected = dict( executable="/linkfrom/python", base_executable="/linkfrom/python", prefix="/usr", exec_prefix="/usr", module_search_paths_set=1, module_search_paths=[ "/usr/lib64/python98.zip", "/usr/lib64/python9.8", "/usr/lib64/python9.8/lib-dynload", ], ) actual = getpath(ns, expected) self.assertEqual(expected, actual) def test_venv_macos(self): """Test a venv layout on macOS. This layout is discovered when 'executable' and 'real_executable' match, but $__PYVENV_LAUNCHER__ has been set to the original process. """ ns = MockPosixNamespace( os_name="darwin", argv0="/usr/bin/python", PREFIX="/usr", ENV___PYVENV_LAUNCHER__="/framework/Python9.8/python", real_executable="/usr/bin/python", ) ns.add_known_xfile("/usr/bin/python") ns.add_known_xfile("/framework/Python9.8/python") ns.add_known_file("/usr/lib/python9.8/os.py") ns.add_known_dir("/usr/lib/python9.8/lib-dynload") ns.add_known_file("/framework/Python9.8/pyvenv.cfg", [ "home = /usr/bin" ]) expected = dict( executable="/framework/Python9.8/python", prefix="/usr", exec_prefix="/usr", base_executable="/usr/bin/python", base_prefix="/usr", base_exec_prefix="/usr", module_search_paths_set=1, module_search_paths=[ "/usr/lib/python98.zip", "/usr/lib/python9.8", "/usr/lib/python9.8/lib-dynload", ], ) actual = getpath(ns, expected) self.assertEqual(expected, actual) def test_symlink_normal_macos(self): "Test a 'standard' install layout via symlink on macOS" ns = MockPosixNamespace( os_name="darwin", PREFIX="/usr", argv0="python", ENV_PATH="/linkfrom:/usr/bin", # real_executable on macOS matches the invocation path real_executable="/linkfrom/python", ) ns.add_known_xfile("/linkfrom/python") ns.add_known_xfile("/usr/bin/python") ns.add_known_link("/linkfrom/python", "/usr/bin/python") ns.add_known_file("/usr/lib/python9.8/os.py") ns.add_known_dir("/usr/lib/python9.8/lib-dynload") expected = dict( executable="/linkfrom/python", base_executable="/linkfrom/python", prefix="/usr", exec_prefix="/usr", module_search_paths_set=1, module_search_paths=[ "/usr/lib/python98.zip", "/usr/lib/python9.8", "/usr/lib/python9.8/lib-dynload", ], ) actual = getpath(ns, expected) self.assertEqual(expected, actual) def test_symlink_buildpath_macos(self): """Test an in-build-tree layout via symlink on macOS. This layout is discovered from the presence of pybuilddir.txt, which contains the relative path from the executable's directory to the platstdlib path. """ ns = MockPosixNamespace( os_name="darwin", argv0=r"python", ENV_PATH="/linkfrom:/usr/bin", PREFIX="/usr/local", # real_executable on macOS matches the invocation path real_executable="/linkfrom/python", ) ns.add_known_xfile("/linkfrom/python") ns.add_known_xfile("/home/cpython/python") ns.add_known_link("/linkfrom/python", "/home/cpython/python") ns.add_known_xfile("/usr/local/bin/python") ns.add_known_file("/home/cpython/pybuilddir.txt", ["build/lib.macos-9.8"]) ns.add_known_file("/home/cpython/Lib/os.py") ns.add_known_dir("/home/cpython/lib-dynload") expected = dict( executable="/linkfrom/python", prefix="/usr/local", exec_prefix="/usr/local", base_executable="/linkfrom/python", build_prefix="/home/cpython", _is_python_build=1, module_search_paths_set=1, module_search_paths=[ "/usr/local/lib/python98.zip", "/home/cpython/Lib", "/home/cpython/build/lib.macos-9.8", ], ) actual = getpath(ns, expected) self.assertEqual(expected, actual) # ****************************************************************************** DEFAULT_NAMESPACE = dict( PREFIX="", EXEC_PREFIX="", PYTHONPATH="", VPATH="", PLATLIBDIR="", PYDEBUGEXT="", VERSION_MAJOR=9, # fixed version number for ease VERSION_MINOR=8, # of testing PYWINVER=None, EXE_SUFFIX=None, ENV_PATH="", ENV_PYTHONHOME="", ENV_PYTHONEXECUTABLE="", ENV___PYVENV_LAUNCHER__="", argv0="", py_setpath="", real_executable="", executable_dir="", library="", winreg=None, build_prefix=None, venv_prefix=None, ) DEFAULT_CONFIG = dict( home=None, platlibdir=None, pythonpath=None, program_name=None, prefix=None, exec_prefix=None, base_prefix=None, base_exec_prefix=None, executable=None, base_executable="", stdlib_dir=None, platstdlib_dir=None, module_search_paths=None, module_search_paths_set=0, pythonpath_env=None, argv=None, orig_argv=None, isolated=0, use_environment=1, use_site=1, ) class MockNTNamespace(dict): def __init__(self, *a, argv0=None, config=None, **kw): self.update(DEFAULT_NAMESPACE) self["config"] = DEFAULT_CONFIG.copy() self["os_name"] = "nt" self["PLATLIBDIR"] = "DLLs" self["PYWINVER"] = "9.8-XY" self["VPATH"] = r"..\.." super().__init__(*a, **kw) if argv0: self["config"]["orig_argv"] = [argv0] if config: self["config"].update(config) self._files = {} self._links = {} self._dirs = set() self._warnings = [] def add_known_file(self, path, lines=None): self._files[path.casefold()] = list(lines or ()) self.add_known_dir(path.rpartition("\\")[0]) def add_known_xfile(self, path): self.add_known_file(path) def add_known_link(self, path, target): self._links[path.casefold()] = target def add_known_dir(self, path): p = path.rstrip("\\").casefold() while p: self._dirs.add(p) p = p.rpartition("\\")[0] def __missing__(self, key): try: return getattr(self, key) except AttributeError: raise KeyError(key) from None def abspath(self, path): if self.isabs(path): return path return self.joinpath("C:\\Absolute", path) def basename(self, path): return path.rpartition("\\")[2] def dirname(self, path): name = path.rstrip("\\").rpartition("\\")[0] if name[1:] == ":": return name + "\\" return name def hassuffix(self, path, suffix): return path.casefold().endswith(suffix.casefold()) def isabs(self, path): return path[1:3] == ":\\" def isdir(self, path): if verbose: print("Check if", path, "is a dir") return path.casefold() in self._dirs def isfile(self, path): if verbose: print("Check if", path, "is a file") return path.casefold() in self._files def ismodule(self, path): if verbose: print("Check if", path, "is a module") path = path.casefold() return path in self._files and path.rpartition(".")[2] == "py".casefold() def isxfile(self, path): if verbose: print("Check if", path, "is a executable") path = path.casefold() return path in self._files and path.rpartition(".")[2] == "exe".casefold() def joinpath(self, *path): return ntpath.normpath(ntpath.join(*path)) def readlines(self, path): try: return self._files[path.casefold()] except KeyError: raise FileNotFoundError(path) from None def realpath(self, path, _trail=None): if verbose: print("Read link from", path) try: link = self._links[path.casefold()] except KeyError: return path if _trail is None: _trail = set() elif link.casefold() in _trail: raise OSError("circular link") _trail.add(link.casefold()) return self.realpath(link, _trail) def warn(self, message): self._warnings.append(message) if verbose: print(message) class MockWinreg: HKEY_LOCAL_MACHINE = "HKLM" HKEY_CURRENT_USER = "HKCU" def __init__(self, keys): self.keys = {k.casefold(): v for k, v in keys.items()} self.open = {} def __repr__(self): return "" def __eq__(self, other): return isinstance(other, type(self)) def open_keys(self): return list(self.open) def OpenKeyEx(self, hkey, subkey): if verbose: print(f"OpenKeyEx({hkey}, {subkey})") key = f"{hkey}\\{subkey}".casefold() if key in self.keys: self.open[key] = self.open.get(key, 0) + 1 return key raise FileNotFoundError() def CloseKey(self, hkey): if verbose: print(f"CloseKey({hkey})") hkey = hkey.casefold() if hkey not in self.open: raise RuntimeError("key is not open") self.open[hkey] -= 1 if not self.open[hkey]: del self.open[hkey] def EnumKey(self, hkey, i): if verbose: print(f"EnumKey({hkey}, {i})") hkey = hkey.casefold() if hkey not in self.open: raise RuntimeError("key is not open") prefix = f'{hkey}\\' subkeys = [k[len(prefix):] for k in sorted(self.keys) if k.startswith(prefix)] subkeys[:] = [k for k in subkeys if '\\' not in k] for j, n in enumerate(subkeys): if j == i: return n.removeprefix(prefix) raise OSError("end of enumeration") def QueryValue(self, hkey): if verbose: print(f"QueryValue({hkey})") hkey = hkey.casefold() if hkey not in self.open: raise RuntimeError("key is not open") try: return self.keys[hkey] except KeyError: raise OSError() class MockPosixNamespace(dict): def __init__(self, *a, argv0=None, config=None, **kw): self.update(DEFAULT_NAMESPACE) self["config"] = DEFAULT_CONFIG.copy() self["os_name"] = "posix" self["PLATLIBDIR"] = "lib" super().__init__(*a, **kw) if argv0: self["config"]["orig_argv"] = [argv0] if config: self["config"].update(config) self._files = {} self._xfiles = set() self._links = {} self._dirs = set() self._warnings = [] def add_known_file(self, path, lines=None): self._files[path] = list(lines or ()) self.add_known_dir(path.rpartition("/")[0]) def add_known_xfile(self, path): self.add_known_file(path) self._xfiles.add(path) def add_known_link(self, path, target): self._links[path] = target def add_known_dir(self, path): p = path.rstrip("/") while p: self._dirs.add(p) p = p.rpartition("/")[0] def __missing__(self, key): try: return getattr(self, key) except AttributeError: raise KeyError(key) from None def abspath(self, path): if self.isabs(path): return path return self.joinpath("/Absolute", path) def basename(self, path): return path.rpartition("/")[2] def dirname(self, path): return path.rstrip("/").rpartition("/")[0] def hassuffix(self, path, suffix): return path.endswith(suffix) def isabs(self, path): return path[0:1] == "/" def isdir(self, path): if verbose: print("Check if", path, "is a dir") return path in self._dirs def isfile(self, path): if verbose: print("Check if", path, "is a file") return path in self._files def ismodule(self, path): if verbose: print("Check if", path, "is a module") return path in self._files and path.rpartition(".")[2] == "py" def isxfile(self, path): if verbose: print("Check if", path, "is an xfile") return path in self._xfiles def joinpath(self, *path): return posixpath.normpath(posixpath.join(*path)) def readlines(self, path): try: return self._files[path] except KeyError: raise FileNotFoundError(path) from None def realpath(self, path, _trail=None): if verbose: print("Read link from", path) try: link = self._links[path] except KeyError: return path if _trail is None: _trail = set() elif link in _trail: raise OSError("circular link") _trail.add(link) return self.realpath(link, _trail) def warn(self, message): self._warnings.append(message) if verbose: print(message) def diff_dict(before, after, prefix="global"): diff = [] for k in sorted(before): if k[:2] == "__": continue if k == "config": diff_dict(before[k], after[k], prefix="config") continue if k in after and after[k] != before[k]: diff.append((k, before[k], after[k])) if not diff: return max_k = max(len(k) for k, _, _ in diff) indent = " " * (len(prefix) + 1 + max_k) if verbose: for k, b, a in diff: if b: print("{}.{} -{!r}\n{} +{!r}".format(prefix, k.ljust(max_k), b, indent, a)) else: print("{}.{} +{!r}".format(prefix, k.ljust(max_k), a)) def dump_dict(before, after, prefix="global"): if not verbose or not after: return max_k = max(len(k) for k in after) for k, v in sorted(after.items(), key=lambda i: i[0]): if k[:2] == "__": continue if k == "config": dump_dict(before[k], after[k], prefix="config") continue try: if v != before[k]: print("{}.{} {!r} (was {!r})".format(prefix, k.ljust(max_k), v, before[k])) continue except KeyError: pass print("{}.{} {!r}".format(prefix, k.ljust(max_k), v)) def getpath(ns, keys): before = copy.deepcopy(ns) failed = True try: exec(SOURCE, ns) failed = False finally: if failed: dump_dict(before, ns) else: diff_dict(before, ns) return { k: ns['config'].get(k, ns.get(k, ...)) for k in keys }