我在执行“时出错”；从lxml导入etree“；通过pip成功安装lxml后，在python命令行中 bash-3.2$pip安装lxml-2.3.5.tgz 拆包。/lxml-2.3.5.tgz 正在为来自的包运行setup.py egg\u infofile:///Users/apple/workspace/pythonhome/misc/lxml-2.3.5.tgz 构建lxml版本2.3.5。 使用Cython 0.17的建筑。 使用libxslt 1.1.27的构建配置 在以下目录中根据libxml2/libxslt生成：/usr/local/lib 警告：未找到与“*.py”匹配的以前包含的文件 安装收集的软件包：lxml 正在为lxml运行setup.py安装 构建lxml版本2.3.5。 使用Cython 0.17的建筑。 使用libxslt 1.1.27的构建配置 在以下目录中根据libxml2/libxslt生成：/usr/local/lib 正在跳过'src/lxml/lxml.etree.c'Cython扩展名（最新） 构建“lxml.etree”扩展 llvm-gcc-4.2-fno严格别名-fno公共-动态-arch i386-arch x86_64-g-O2-DNDEBUG-g-O3-I/usr/local/include-I/usr/local/include/libxml2-I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7-c src/lxml/lxml.etree.c-o build/temp.macosx-10.6-intel-2.7/src/lxml/lxml/netnamespace-etree.o-etree.o-w-flat llvm-gcc-4.2-bundle-未定义的动态查找-arch i386-arch x86_64-g build/temp.macosx-10.6-intel-2.7/src/lxml/lxml.etree.o-L/usr/local/lib-lxslt-lexslt-lxml2-lz-lm-o build/lib.macosx-10.6-intel-2.7/lxml/etree.so 正在跳过'src/lxml/lxml.objectify.c'Cython扩展名（最新） 构建“lxml.objectify”扩展 llvm-gcc-4.2-fno严格别名-fno公共-动态-arch i386-arch x86_64-g-O2-DNDEBUG-g-O3-I/usr/local/include-I/usr/local/include/libxml2-I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7-c src/lxml/lxml.objectify.c-o build/temp.macosx-10.6-intel-2.7/src/lxml/lxml.o objectify.o-w-flat\n llvm-gcc-4.2-bundle-未定义的动态查找-arch i386-arch x86_64-g build/temp.macosx-10.6-intel-2.7/src/lxml/lxml.objectify.o-L/usr/local/lib-lxslt-lexslt-lxml2-lz-lm-o build/lib.macosx-10.6-intel-2.7/lxml/objectify.so 已成功安装lxml 清理。。。 bash-3.2$python Python 2.7.3（v2.7.3:70274d53c1dd，2012年4月9日，20:52:43） [GCC 4.2.1（苹果公司建造5666）（dot 3）]关于达尔文 有关详细信息，请键入“帮助”、“版权”、“信用证”或“许可证”。 >>>导入lxml >>>导入html 回溯（最近一次呼叫最后一次）： 文件“”，第1行，在 ImportError:没有名为html的模块 >>>从lxml导入html 回溯（最近一次呼叫最后一次）： 文件“”，第1行，在 文件“/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site packages/lxml/html/_init__.py”，第12行，在 从lxml导入etree ImportError:dlopen（/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/lxml/etree.so，2）：找不到符号：_exsltDateXpathCtxtRegister 引用自：/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/lxml/etree.so 应为：平面命名空间 在/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/lxml/etree.so中

对于旧版本lxml2.3.4，再次出现相同错误

bash-3.2$ pip install lxml-2.3.5.tgz Unpacking ./lxml-2.3.5.tgz Running setup.py egg_info for package from file:///Users/apple/workspace/pythonhome/misc/lxml-2.3.5.tgz Building lxml version 2.3.5. Building with Cython 0.17. Using build configuration of libxslt 1.1.27 Building against libxml2/libxslt in the following directory: /usr/local/lib warning: no previously-included files found matching '*.py' Installing collected packages: lxml Running setup.py install for lxml Building lxml version 2.3.5. Building with Cython 0.17. Using build configuration of libxslt 1.1.27 Building against libxml2/libxslt in the following directory: /usr/local/lib skipping 'src/lxml/lxml.etree.c' Cython extension (up-to-date) building 'lxml.etree' extension llvm-gcc-4.2 -fno-strict-aliasing -fno-common -dynamic -arch i386 -arch x86_64 -g -O2 -DNDEBUG -g -O3 -I/usr/local/include -I/usr/local/include/libxml2 -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c src/lxml/lxml.etree.c -o build/temp.macosx-10.6-intel-2.7/src/lxml/lxml.etree.o -w -flat_namespace llvm-gcc-4.2 -bundle -undefined dynamic_lookup -arch i386 -arch x86_64 -g build/temp.macosx-10.6-intel-2.7/src/lxml/lxml.etree.o -L/usr/local/lib -lxslt -lexslt -lxml2 -lz -lm -o build/lib.macosx-10.6-intel-2.7/lxml/etree.so skipping 'src/lxml/lxml.objectify.c' Cython extension (up-to-date) building 'lxml.objectify' extension llvm-gcc-4.2 -fno-strict-aliasing -fno-common -dynamic -arch i386 -arch x86_64 -g -O2 -DNDEBUG -g -O3 -I/usr/local/include -I/usr/local/include/libxml2 -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c src/lxml/lxml.objectify.c -o build/temp.macosx-10.6-intel-2.7/src/lxml/lxml.objectify.o -w -flat_namespace llvm-gcc-4.2 -bundle -undefined dynamic_lookup -arch i386 -arch x86_64 -g build/temp.macosx-10.6-intel-2.7/src/lxml/lxml.objectify.o -L/usr/local/lib -lxslt -lexslt -lxml2 -lz -lm -o build/lib.macosx-10.6-intel-2.7/lxml/objectify.so Successfully installed lxml Cleaning up... bash-3.2$ python Python 2.7.3 (v2.7.3:70274d53c1dd, Apr 9 2012, 20:52:43) [GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> import lxml >>> import html Traceback (most recent call last): File "", line 1, in ImportError: No module named html >>> from lxml import html Traceback (most recent call last): File "", line 1, in File "/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/lxml/html/__init__.py", line 12, in from lxml import etree ImportError: dlopen(/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/lxml/etree.so, 2): Symbol not found: _exsltDateXpathCtxtRegister Referenced from: /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/lxml/etree.so Expected in: flat namespace in /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/lxml/etree.so bash-3.2$pip安装lxml-2.3.4.tgz 拆包。/lxml-2.3.4.tgz 正在为来自的包运行setup.py egg\u infofile:///Users/apple/workspace/pythonhome/misc/lxml-2.3.4.tgz 构建lxml版本2.3.4。 使用Cython 0.17的建筑。 使用libxslt 1.1.27的构建配置 在以下目录中根据libxml2/libxslt生成：/usr/local/lib 警告：未找到与“*.py”匹配的以前包含的文件 安装收集的软件包：lxml 正在为lxml运行setup.py安装 构建lxml版本2.3.4。 使用Cython 0.17的建筑。 使用libxslt 1.1.27的构建配置 在以下目录中根据libxml2/libxslt生成：/usr/local/lib 正在跳过'src/lxml/lxml.etree.c'Cython扩展名（最新） 构建“lxml.etree”扩展 llvm-gcc-4.2-fno严格别名-fno公共-动态-arch i386-arch x86_64-g-O2-DNDEBUG-g-O3-I/usr/local/include-I/usr/local/include/libxml2-I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7-c src/lxml/lxml.etree.c-o build/temp.macosx-10.6-intel-2.7/src/lxml/lxml/netnamespace-etree.o-etree.o-w-flat llvm-gcc-4.2-bundle-未定义的动态查找-arch i386-arch x86_64-g build/temp.macosx-10.6-intel-2.7/src/lxml/lxml.etree.o-L/usr/local/lib-lxslt-lexslt-lxml2-lz-lm-o build/lib.macosx-10.6-intel-2.7/lxml/etree.so 正在跳过'src/lxml/lxml.objectify.c'Cython扩展名（最新） 构建“lxml.objectify”扩展 llvm-gcc-4.2-fno严格别名-fno公共-动态-arch i386-arch x86_64-g-O2-DNDEBUG-g-O3-I/usr/local/include-I/usr/local/include/libxml2-I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7-c src/lxml/lxml.objectify.c-o build/temp.macosx-10.6-intel-2.7/src/lxml/lxml.o objectify.o-w-flat\n llvm-gcc-4.2-bundle-未定义的动态查找-arch i386-arch x86_64-g build/temp.macosx-10.6-intel-2.7/src/lxml/lxml.objectify.o-L/usr/local/lib-lxslt-lexslt-lxml2-lz-lm-o build/lib.macosx-10.6-intel-2.7/lxml/objectify.so 已成功安装lxml 清理。。。 bash-3.2$python Python 2.7.3（v2.7.3:70274d53c1dd，2012年4月9日，20:52:43） [GCC 4.2.1（苹果公司建造5666）（dot 3）]关于达尔文 有关详细信息，请键入“帮助”、“版权”、“信用证”或“许可证”。 >>>导入操作系统 >>>导入lxml >>>从lxml导入etree 回溯（最近一次呼叫最后一次）： 文件“”，第1行，在 ImportError:dlopen（/Library/Frameworks/Python.framework/Versions/2.7/lib/ bash-3.2$ pip install lxml-2.3.4.tgz Unpacking ./lxml-2.3.4.tgz Running setup.py egg_info for package from file:///Users/apple/workspace/pythonhome/misc/lxml-2.3.4.tgz Building lxml version 2.3.4. Building with Cython 0.17. Using build configuration of libxslt 1.1.27 Building against libxml2/libxslt in the following directory: /usr/local/lib warning: no previously-included files found matching '*.py' Installing collected packages: lxml Running setup.py install for lxml Building lxml version 2.3.4. Building with Cython 0.17. Using build configuration of libxslt 1.1.27 Building against libxml2/libxslt in the following directory: /usr/local/lib skipping 'src/lxml/lxml.etree.c' Cython extension (up-to-date) building 'lxml.etree' extension llvm-gcc-4.2 -fno-strict-aliasing -fno-common -dynamic -arch i386 -arch x86_64 -g -O2 -DNDEBUG -g -O3 -I/usr/local/include -I/usr/local/include/libxml2 -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c src/lxml/lxml.etree.c -o build/temp.macosx-10.6-intel-2.7/src/lxml/lxml.etree.o -w -flat_namespace llvm-gcc-4.2 -bundle -undefined dynamic_lookup -arch i386 -arch x86_64 -g build/temp.macosx-10.6-intel-2.7/src/lxml/lxml.etree.o -L/usr/local/lib -lxslt -lexslt -lxml2 -lz -lm -o build/lib.macosx-10.6-intel-2.7/lxml/etree.so skipping 'src/lxml/lxml.objectify.c' Cython extension (up-to-date) building 'lxml.objectify' extension llvm-gcc-4.2 -fno-strict-aliasing -fno-common -dynamic -arch i386 -arch x86_64 -g -O2 -DNDEBUG -g -O3 -I/usr/local/include -I/usr/local/include/libxml2 -I/Library/Frameworks/Python.framework/Versions/2.7/include/python2.7 -c src/lxml/lxml.objectify.c -o build/temp.macosx-10.6-intel-2.7/src/lxml/lxml.objectify.o -w -flat_namespace llvm-gcc-4.2 -bundle -undefined dynamic_lookup -arch i386 -arch x86_64 -g build/temp.macosx-10.6-intel-2.7/src/lxml/lxml.objectify.o -L/usr/local/lib -lxslt -lexslt -lxml2 -lz -lm -o build/lib.macosx-10.6-intel-2.7/lxml/objectify.so Successfully installed lxml Cleaning up... bash-3.2$ python Python 2.7.3 (v2.7.3:70274d53c1dd, Apr 9 2012, 20:52:43) [GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin Type "help", "copyright", "credits" or "license" for more information. >>> import os >>> import lxml >>> from lxml import etree Traceback (most recent call last): File "", line 1, in ImportError: dlopen(/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/lxml/etree.so, 2): Symbol not found: _exsltDateXpathCtxtRegister Referenced from: /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/lxml/etree.so Expected in: flat namespace in /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/lxml/etree.so

ImportError: dlopen(/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/lxml/etree.so, 2): Symbol not found: _exsltDateXpathCtxtRegister

ldd /Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/site-packages/lxml/etree.so