无法导入名称 ContextualZipFile答案

【问题标题】：Cannot import name ContextualZipFile无法导入名称 ContextualZipFile
【发布时间】：2018-06-11 14:00:25
【问题描述】：

这是我尝试安装 sqalchemy 时得到的结果

Traceback (most recent call last):
  File "/usr/bin/easy_install", line 11, in <module>
    load_entry_point('setuptools==33.1.1', 'console_scripts', 'easy_install')()
  File "/home/j/.local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 572, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/home/j/.local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2755, in load_entry_point
    return ep.load()
  File "/home/j/.local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2408, in load
    return self.resolve()
  File "/home/j/.local/lib/python2.7/site-packages/pkg_resources/__init__.py", line 2414, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
  File "/usr/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 51, in <module>
    from setuptools.archive_util import unpack_archive
  File "/usr/lib/python2.7/dist-packages/setuptools/archive_util.py", line 12, in <module>
    from pkg_resources import ContextualZipFile
ImportError: cannot import name ContextualZipFile

我已尝试安装和卸载 setuptools。

我还尝试在我的 usr/local/lib/python2.7/dist-packages/setuptools/archive_util.py 中将“from pkg_resources import ensure_directory, ContextualZipFile”更改为“from pkg_resources import ensure_directory”。但是我得到了错误

Best match: MySQL-python 1.2.5
Processing MySQL-python-1.2.5.zip
Traceback (most recent call last):
  File "/usr/bin/easy_install", line 11, in <module>
    load_entry_point('setuptools==33.1.1', 'console_scripts', 'easy_install')()
  File "/usr/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 2325, in main
    **kw
  File "/usr/lib/python2.7/distutils/core.py", line 151, in setup
    dist.run_commands()
  File "/usr/lib/python2.7/distutils/dist.py", line 953, in run_commands
    self.run_command(cmd)
  File "/usr/lib/python2.7/distutils/dist.py", line 972, in run_command
    cmd_obj.run()
  File "/usr/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 436, in run
    self.easy_install(spec, not self.no_deps)
  File "/usr/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 699, in easy_install
    return self.install_item(spec, dist.location, tmpdir, deps)
  File "/usr/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 725, in install_item
    dists = self.install_eggs(spec, download, tmpdir)
  File "/usr/lib/python2.7/dist-packages/setuptools/command/easy_install.py", line 876, in install_eggs
    unpack_archive(dist_filename, tmpdir, self.unpack_progress)
  File "/usr/lib/python2.7/dist-packages/setuptools/archive_util.py", line 53, in unpack_archive
    driver(filename, extract_dir, progress_filter)
  File "/usr/lib/python2.7/dist-packages/setuptools/archive_util.py", line 102, in unpack_zipfile
    with ContextualZipFile(filename) as z:
NameError: global name 'ContextualZipFile' is not defined

我也试过直接导入 pkg_resources 但还是找不到 ContextualZipFile。我得到了错误：

NameError: global name 'ContextualZipFile' is not defined

我用 python版本= 2.7.13和 pip 版本 = 9.0.1

我也在虚拟环境中这样做

【问题讨论】：

标签： python

【解决方案1】：

这似乎是一个常见的错误 https://github.com/pypa/setuptools/issues/252

最简单的方法是使用替代方法，例如： yum -y 安装 python-pip

【讨论】：

【解决方案2】：

这是一个非常讨厌的 hack，但我刚刚注释掉了导入，easy_install 似乎工作正常。将对应的行改为：

from pkg_resources import ensure_directory#, ContextualZipFile

注意：这是一个系统文件，因此您必须使用 sudo 权限来更改它。您可以使用：sudo vim filename。

这不是一个很好的解决方法，但如果您需要让它快速工作，这应该可以解决问题。希望这会有所帮助！

【讨论】：