Install jupyterlab in pip3 throws 'TypeError: expected string or bytes-like object'
背景
我试图用
pip3 install jupyterlab 安装jupyter实验室，但它却犯了同样的错误。我没弄明白。找到了一个使用
pip2 install jupyterlab 的解决方案——它起作用了，但显然是一个创可贴的解决方案。尝试在python3笔记本(Jupyter实验室内)中运行
import pandas as pd ；未找到模块。我在PC上使用cygwin作为Linux仿真器。
我喜欢python3.x而不是python 2.7。
我试图解决这个问题
类似的Jupyterlab帖子——我在这里发现：Jupyteripython笔记本上的导入熊猫失败了，但我相信作者使用的是Python(我不是)，并且类型错误是不同的。
我找到了一篇与我的typeerror相关的文章，但这是他写的代码：获取typeerror:预期的字符串或类似于object的字节。
我很难解释回溯，但下面是：
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 | $ pip install --upgrade pip Exception: Traceback (most recent call last): File"/usr/lib/python3.6/site-packages/pip/basecommand.py", line 215, in main status = self.run(options, args) File"/usr/lib/python3.6/site-packages/pip/commands/install.py", line 335, in run wb.build(autobuilding=True) File"/usr/lib/python3.6/site-packages/pip/wheel.py", line 749, in build self.requirement_set.prepare_files(self.finder) File"/usr/lib/python3.6/site-packages/pip/req/req_set.py", line 380, in prepare_files ignore_dependencies=self.ignore_dependencies)) File"/usr/lib/python3.6/site-packages/pip/req/req_set.py", line 487, in _prepare_file req_to_install, finder) File"/usr/lib/python3.6/site-packages/pip/req/req_set.py", line 428, in _check_skip_installed req_to_install, upgrade_allowed) File"/usr/lib/python3.6/site-packages/pip/index.py", line 465, in find_requirement all_candidates = self.find_all_candidates(req.name) File"/usr/lib/python3.6/site-packages/pip/index.py", line 427, in find_all_candidates self._package_versions(page.links, search) File"/usr/lib/python3.6/site-packages/pip/index.py", line 595, in _package_versions v = self._link_package_versions(link, search) File"/usr/lib/python3.6/site-packages/pip/index.py", line 667, in _link_package_versions support_this_python = check_requires_python(link.requires_python) File"/usr/lib/python3.6/site-packages/pip/utils/packaging.py", line 34, in check_requires_python return python_version in requires_python_specifier File"/usr/lib/python3.6/site-packages/packaging/specifiers.py", line 698, in __contains__ return self.contains(item) File"/usr/lib/python3.6/site-packages/packaging/specifiers.py", line 703, in contains item = parse(item) File"/usr/lib/python3.6/site-packages/packaging/version.py", line 31, in parse return Version(version) File"/usr/lib/python3.6/site-packages/packaging/version.py", line 200, in __init__ match = self._regex.search(version) TypeError: expected string or bytes-like object |
为什么版本返回的不是字符串或字节？我的python 3.6包本身有缺陷吗？我正在考虑打开这些文件的追溯，看看我是否可以调试它，但我认为我应该寻求帮助之前，尝试一些听起来有点荒谬的事情，我说。
我试过的其他东西
pip2 install --upgrade pip -返回一条消息，说明python2.7中的pip是最新的。
回溯(pip2)：
1 2 | $ pip2 install --upgrade pip Requirement already up-to-date: pip in /usr/lib/python2.7/site-packages |
号
pip3 install --upgrade pip —返回上面相同的类型错误
回溯(pip3)：见第一个回溯
pip版本和python站点输出
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 | $ pip2 --version pip 9.0.1 from /usr/lib/python2.7/site-packages (python 2.7) $ python -m site sys.path = [ '/home/jennings/Documents/hpv/hpv_missed_clinics', '/usr/lib/python2.7/site-packages/logilab_common-1.3.0-py2.7.egg', '/usr/lib/python2.7/site-packages/six-1.9.0-py2.7.egg', '/usr/lib/python27.zip', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-cygwin', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/lib/python2.7/site-packages', '/usr/lib/python2.7/site-packages/gtk-2.0', '/usr/lib/python2.7/site-packages/wx-3.0-gtk3', ] USER_BASE: '/home/jennings/.local' (exists) USER_SITE: '/home/jennings/.local/lib/python2.7/site-packages' (doesn't exist) ENABLE_USER_SITE: True $ pip --version pip 9.0.1 from /usr/lib/python3.6/site-packages (python 3.6) $ python3 -m site sys.path = [ '/home/jennings/Documents/hpv/hpv_missed_clinics', '/usr/lib/python36.zip', '/usr/lib/python3.6', '/usr/lib/python3.6/lib-dynload', '/usr/lib/python3.6/site-packages', '/home/jennings/Documents/kaggle/SQL_scavenger/src/bq-helper', '/usr/lib/python3.6/site-packages/linkgrammar', ] USER_BASE: '/home/jennings/.local' (exists) USER_SITE: '/home/jennings/.local/lib/python3.6/site-packages' (doesn't exist) ENABLE_USER_SITE: True |
真正的解决方法就是咬紧牙关，使用虚拟环境来确保软件包的工作，无论是使用水蟒还是直接通过命令行。
我当时正处于时间危机中，下面的答案是W？？？？？？？？？？？？？？？？？？？3000给了我创可贴来完成我需要做的事情。我要把它留在这里存档。
每？？？？？？？？？？？？？？？？？？？？在评论中有3000个答案被删除，这就修正了它。如果你是？？？？？？？？？？？？？？？？？？？3000，看这篇编辑，请随意发表评论，我可以将其标记为"接受的答案"。根据格雷格·施密特的建议，我也将答案移到了本节。我刚接触StackExchange，所以如果你知道如何联系？？？？？？？？？？？？？？？？？？？？3000，请帮忙。这是目前的答案，除非有人能提供更多的洞察力。不确定这种并发症是否与赛格温有关。
打开文件"/usr/lib/python3.6/site packages/packaging/version.py"
将第200行的代码从
match = self._regex.search(version) 改为match = self._regex.search(str(version)) 。重新运行代码
pip3 install jupyterlab
现在，当我运行