最近，我决定在我的 Windows 8 笔记本电脑上将 Python 2.7 升级到 Python 3.4。因此，我卸载了 Py2.7，从 Python 的站点下载了 .msi 文件并运行它。我发现，我尝试的每个 3.4.1 和 3.4.0 安装程序都会给我一个错误，提示安装程序的一部分不起作用。确切的错误消息是“此 Windows 安装程序包存在问题。作为安装的一部分运行的程序未按预期完成。请联系您的支持人员或软件包供应商。”我以前从未遇到过这种问题，当然在使用 Python 时也没有遇到过。有人知道尝试调试此问题的好方法吗？它在如此多的安装程序中都存在，我确信它一定是我的系统上的问题。
编辑：感谢您提供有关日志文件的提示。它非常大（比我被允许在此网站上发布的大约 320k 个字符）。这是在显示“致命错误”之后的部分。这是在 3.4.1 64 位安装程序上运行建议的代码的结果。
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Property(S): UpgradeCode = {65E6DE48-A358-434D-AA4F-4AF72DB4718F}
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Property(S): ProductCode = {DF32BB9E-3ED8-36B5-A649-E8C845C5F3A2}
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Property(S): Progress2 = installs
Property(S): MaintenanceForm_Action = Repair
Property(S): DLLDIR = C:\Windows\SysWOW64\
Property(S): LAUNCHERDIR = C:\Windows\
Property(S): SourceDir = C:\Users\Jesse\Downloads\
Property(S): DLLs = C:\Python34\DLLs\
Property(S): Lib = C:\Python34\Lib\
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Property(S): asyncio = C:\Python34\Lib\asyncio\
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Property(S): venv = C:\Python34\Lib\venv\
Property(S): venv_pycache = C:\Python34\Lib\venv\__pycache__\
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Property(S): test2_pycache = C:\Python34\Lib\ctypes\test\__pycache__\
Property(S): macholib = C:\Python34\Lib\ctypes\macholib\
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Property(S): support_pycache = C:\Python34\Lib\test\support\__pycache__\
Property(S): capath = C:\Python34\Lib\test\capath\
Property(S): encoded_modules = C:\Python34\Lib\test\encoded_modules\
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Property(S): cjkencodings = C:\Python34\Lib\test\cjkencodings\
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Property(S): xmltestdata = C:\Python34\Lib\test\xmltestdata\
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Property(S): audiodata = C:\Python34\Lib\test\audiodata\
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Property(S): project3 = C:\Python34\Lib\test\test_importlib\namespace_pkgs\project3\
Property(S): parent = C:\Python34\Lib\test\test_importlib\namespace_pkgs\project3\parent\
Property(S): child = C:\Python34\Lib\test\test_importlib\namespace_pkgs\project3\parent\child\
Property(S): child_pycache = C:\Python34\Lib\test\test_importlib\namespace_pkgs\project3\parent\child\__pycache__\
Property(S): project1 = C:\Python34\Lib\test\test_importlib\namespace_pkgs\project1\
Property(S): parent1 = C:\Python34\Lib\test\test_importlib\namespace_pkgs\project1\parent\
Property(S): child1 = C:\Python34\Lib\test\test_importlib\namespace_pkgs\project1\parent\child\
Property(S): child1_pycache = C:\Python34\Lib\test\test_importlib\namespace_pkgs\project1\parent\child\__pycache__\
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Property(S): parent2 = C:\Python34\Lib\test\test_importlib\namespace_pkgs\project2\parent\
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Property(S): foo3 = C:\Python34\Lib\test\test_importlib\namespace_pkgs\portion2\foo\
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Property(S): mime_pycache = C:\Python34\Lib\email\mime\__pycache__\
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Property(S): Argentina = C:\Python34\tcl\tcl8.6\tzdata\America\Argentina\
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Property(S): tdbc = C:\Python34\tcl\tcl8\8.6\tdbc\
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Property(S): itcl4.0.0 = C:\Python34\tcl\itcl4.0.0\
Property(S): dde1.4 = C:\Python34\tcl\dde1.4\
Property(S): i18n = C:\Python34\Tools\i18n\
Property(S): i18n_pycache = C:\Python34\Tools\i18n\__pycache__\
Property(S): pynche = C:\Python34\Tools\pynche\
Property(S): pynche_pycache = C:\Python34\Tools\pynche\__pycache__\
Property(S): Scripts = C:\Python34\Tools\Scripts\
Property(S): Scripts_pycache = C:\Python34\Tools\Scripts\__pycache__\
Property(S): Doc = C:\Python34\Doc\
Property(S): ProgramMenuFolder = C:\ProgramData\Microsoft\Windows\Start Menu\Programs\
Property(S): MenuDir = C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Python 3.4\
Property(S): SecureCustomProperties = REMOVEOLDSNAPSHOT;REMOVEOLDVERSION;TARGETDIR;DLLDIR;LAUNCHERDIR
Property(S): WindowsFolder_x86_VC.AFA96EB4_FA9F_335C_A7CB_36079407553D = C:\Windows\
Property(S): SystemFolder_x86_VC.AFA96EB4_FA9F_335C_A7CB_36079407553D = C:\Windows\SysWOW64\
Property(S): DirectoryTable100_x86.AFA96EB4_FA9F_335C_A7CB_36079407553D = DirectoryTable
Property(S): MsiLogFileLocation = C:\Users\Jesse\Downloads\log.txt
Property(S): PackageCode = {32A3290B-8A39-4C7C-83A9-90DFDF2A7FAD}
Property(S): ProductState = -1
Property(S): ALLUSERS = 1
Property(S): PackagecodeChanging = 1
Property(S): RestrictedUserControl = 1
Property(S): CURRENTDIRECTORY = C:\Users\Jesse\Downloads
Property(S): CLIENTUILEVEL = 0
Property(S): CLIENTPROCESSID = 5572
Property(S): ACTION = INSTALL
Property(S): EXECUTEACTION = INSTALL
Property(S): INSTALLLEVEL = 1
Property(S): SECONDSEQUENCE = 1
Property(S): ADDLOCAL = DefaultFeature,SharedCRT,Extensions,TclTk,Documentation,Tools,pip_feature,Testsuite,PrependPath
Property(S): VersionDatabase = 200
Property(S): VersionMsi = 5.00
Property(S): VersionNT64 = 602
Property(S): WindowsBuild = 9200
Property(S): ServicePackLevel = 0
Property(S): ServicePackLevelMinor = 0
Property(S): MsiNTProductType = 1
Property(S): MsiNTSuitePersonal = 1
Property(S): WindowsFolder = C:\Windows\
Property(S): WindowsVolume = C:\
Property(S): System64Folder = C:\Windows\system32\
Property(S): SystemFolder = C:\Windows\SysWOW64\
Property(S): RemoteAdminTS = 1
Property(S): TempFolder = C:\Users\Jesse\AppData\Local\Temp\
Property(S): ProgramFilesFolder = C:\Program Files (x86)\
Property(S): CommonFilesFolder = C:\Program Files (x86)\Common Files\
Property(S): ProgramFiles64Folder = C:\Program Files\
Property(S): CommonFiles64Folder = C:\Program Files\Common Files\
Property(S): AppDataFolder = C:\Users\Jesse\AppData\Roaming\
Property(S): FavoritesFolder = C:\Users\Jesse\Favorites\
Property(S): NetHoodFolder = C:\Users\Jesse\AppData\Roaming\Microsoft\Windows\Network Shortcuts\
Property(S): PersonalFolder = C:\Users\Jesse\Documents\
Property(S): PrintHoodFolder = C:\Users\Jesse\AppData\Roaming\Microsoft\Windows\Printer Shortcuts\
Property(S): RecentFolder = C:\Users\Jesse\AppData\Roaming\Microsoft\Windows\Recent\
Property(S): SendToFolder = C:\Users\Jesse\AppData\Roaming\Microsoft\Windows\SendTo\
Property(S): TemplateFolder = C:\ProgramData\Microsoft\Windows\Templates\
Property(S): CommonAppDataFolder = C:\ProgramData\
Property(S): LocalAppDataFolder = C:\Users\Jesse\AppData\Local\
Property(S): MyPicturesFolder = C:\Users\Jesse\Pictures\
Property(S): AdminToolsFolder = C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Administrative Tools\
Property(S): StartupFolder = C:\ProgramData\Microsoft\Windows\Start Menu\Programs\Startup\
Property(S): StartMenuFolder = C:\ProgramData\Microsoft\Windows\Start Menu\
Property(S): DesktopFolder = C:\Users\Public\Desktop\
Property(S): FontsFolder = C:\Windows\Fonts\
Property(S): GPTSupport = 1
Property(S): OLEAdvtSupport = 1
Property(S): ShellAdvtSupport = 1
Property(S): MsiAMD64 = 6
Property(S): Msix64 = 6
Property(S): Intel = 6
Property(S): PhysicalMemory = 4043
Property(S): VirtualMemory = 5839
Property(S): LogonUser = Jesse
Property(S): UserSID = S-1-5-21-1182483876-2045043420-405903354-1001
Property(S): UserLanguageID = 1033
Property(S): ComputerName = MINICHROME
Property(S): SystemLanguageID = 1033
Property(S): ScreenX = 1024
Property(S): ScreenY = 768
Property(S): CaptionHeight = 23
Property(S): BorderTop = 1
Property(S): BorderSide = 1
Property(S): TextHeight = 16
Property(S): TextInternalLeading = 3
Property(S): ColorBits = 32
Property(S): TTCSupport = 1
Property(S): Time = 12:14:36
Property(S): Date = 6/19/2014
Property(S): MsiNetAssemblySupport = 4.0.30319.17929
Property(S): MsiWin32AssemblySupport = 6.2.9200.16384
Property(S): RedirectedDllSupport = 2
Property(S): MsiRunningElevated = 1
Property(S): Privileged = 1
Property(S): USERNAME = Jesse
Property(S): DATABASE = C:\Windows\Installer\522b8.msi
Property(S): OriginalDatabase = C:\Users\Jesse\Downloads\python-3.4.1.msi
Property(S): UILevel = 5
Property(S): Preselected = 1
Property(S): ROOTDRIVE = C:\
Property(S): CostingComplete = 1
Property(S): OutOfDiskSpace = 0
Property(S): OutOfNoRbDiskSpace = 0
Property(S): PrimaryVolumeSpaceAvailable = 0
Property(S): PrimaryVolumeSpaceRequired = 0
Property(S): PrimaryVolumeSpaceRemaining = 0
Property(S): SOURCEDIR = C:\Users\Jesse\Downloads\
Property(S): SourcedirProduct = {DF32BB9E-3ED8-36B5-A649-E8C845C5F3A2}
Property(S): ProductToBeRegistered = 1
MSI (s) (60:80) [12:14:36:539]: MainEngineThread is returning 1603
MSI (s) (60:64) [12:14:36:539]: RESTART MANAGER: Session closed.
MSI (s) (60:64) [12:14:36:539]: No System Restore sequence number for this installation.
MSI (s) (60:64) [12:14:36:554]: User policy value 'DisableRollback' is 0
MSI (s) (60:64) [12:14:36:554]: Machine policy value 'DisableRollback' is 0
MSI (s) (60:64) [12:14:36:554]: Incrementing counter to disable shutdown. Counter after increment: 0
MSI (s) (60:64) [12:14:36:554]: Note: 1: 1402 2: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Installer\Rollback\Scripts 3: 2
MSI (s) (60:64) [12:14:36:554]: Note: 1: 1402 2: HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Installer\Rollback\Scripts 3: 2
MSI (s) (60:64) [12:14:36:554]: Decrementing counter to disable shutdown. If counter >= 0, shutdown will be denied. Counter after decrement: -1
MSI (s) (60:64) [12:14:36:554]: Destroying RemoteAPI object.
MSI (s) (60:F0) [12:14:36:554]: Custom Action Manager thread ending.
MSI (c) (C4:E8) [12:14:36:554]: Back from server. Return value: 1603
MSI (c) (C4:E8) [12:14:36:554]: Decrementing counter to disable shutdown. If counter >= 0, shutdown will be denied. Counter after decrement: -1
MSI (c) (C4:E8) [12:14:36:554]: PROPERTY CHANGE: Deleting SECONDSEQUENCE property. Its current value is '1'.
Action ended 12:14:36: ExecuteAction. Return value 3.
MSI (c) (C4:E8) [12:14:36:554]: Doing action: FatalError
Action 12:14:36: FatalError.
Action start 12:14:36: FatalError.
Action 12:14:36: FatalError. Dialog created
Action ended 12:14:37: FatalError. Return value 2.
答案1
由于该问题是由于 pip 附带 python 3.4 安装程序而引起的，因此您可以简单地取消选中安装程序中的 pip 安装选项，然后稍后尝试手动安装 pip。
答案2
我遇到了相同或至少类似的错误，但我找不到解决方案。我刚刚卸载了 Python 3.4.1，并尝试安装 Python 3.4.2。
我在我的环境中发现了三个不同的问题，但问题 #3 才是真正解决了我的问题。前两个问题对我的情况没有太大影响，我只是将它们作为其他人的附加选项/想法（特别是在安装第二个 Python 版本等时）。
剩余的环境变量。 我有 3.4.1 安装集的环境变量。安装多个版本时，这可能会导致安装过程中出错。您可能需要删除这些环境变量。
系统路径。 Python 仍在系统 PATH 中。同样，安装多个版本时，这可能会导致安装过程中出错。您可能需要从 PATH 中删除这些条目。
实际问题：
open/command注册表中的自定义。 我在这里有这个注册表项（加上添加.PY到PATHEXTenvar），所以我可以仅使用 来运行 Python 程序app.py，而不必输入PYTHON app.py。
问题在于，新版本的 Python 只进行了部分安装，然后它在安装过程中尝试运行一些 Python 命令。由于我的自定义注册，它尝试使用旧的 python.exe 路径运行 Python 代码，而 python.exe 当然已被卸载。所以，每次都会失败。
因此，删除自定义的 open/command 可使安装成功。安装完成后，我将其重新添加。
需要注意几件事。如果我没有更改安装位置，就不会遇到这个问题。而且，我本可以更新 open/command 条目以指向新位置，而不是将其删除并随后重新添加。
答案3
好极了，经过多次调查，我终于找到了解决方案，转到系统路径并删除指向 python27 或任何其他版本的任何路径地址，然后运行 msi 安装程序。