Pip3无法为python3.8.6安装"empy“(没有为empy找到匹配的发行版)
Pip3无法为python3.8.6安装"empy“(没有为empy找到匹配的发行版)
提问于 2022-01-26 22:20:18
我试图在我的ubuntu18.04PC上使用python3.8.6创建的虚拟环境中安装带有pip3 install empy命令的pip3 install empy，但得到了以下主要错误：
ERROR: Could not find a version that satisfies the requirement empy (from versions: 3.3.2, 3.3.4)
ERROR: No matching distribution found for empy 我还使用sudo apt-get install libffi-dev安装了“libffi”，以防止错误ModuleNotFoundError: No module named '_ctypes'，但错误仍然存在，并且保持不变。
完全错误，如终端中的：
(py3venv) expert-bot@expert-nx:~/python3_ws$ pip3 install empy
Collecting empy
Using cached empy-3.3.4.tar.gz (62 kB)
Preparing metadata (setup.py) ... error
ERROR: Command errored out with exit status 1:
command: /home/expert-bot/python3_ws/py3venv/bin/python -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-04mt1wt_/empy_f5b8490ded264bce82e92de860ffaccf/setup.py'"'"'; file__='"'"'/tmp/pip-install-04mt1wt_/empy_f5b8490ded264bce82e92de860ffaccf/setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-pip-egg-info-vx6cf784
cwd: /tmp/pip-install-04mt1wt_/empy_f5b8490ded264bce82e92de860ffaccf/
Complete output (13 lines):
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/home/expert-bot/python3_ws/py3venv/lib/python3.8/site-packages/setuptools/__init__.py", line 18, in <module>
from setuptools.dist import Distribution
File "/home/expert-bot/python3_ws/py3venv/lib/python3.8/site-packages/_virtualenv.py", line 89, in exec_module
old(module)
File "/home/expert-bot/python3_ws/py3venv/lib/python3.8/site-packages/setuptools/dist.py", line 37, in <module>
from setuptools import windows_support
File "/home/expert-bot/python3_ws/py3venv/lib/python3.8/site-packages/setuptools/windows_support.py", line 2, in <module>
import ctypes
File "/usr/local/lib/python3.8/ctypes/__init__.py", line 7, in <module>
from _ctypes import Union, Structure, Array
ModuleNotFoundError: No module named '_ctypes'
----------------------------------------
WARNING: Discarding https://files.pythonhosted.org/packages/3b/95/88ed47cb7da88569a78b7d6fb9420298df7e99997810c844a924d96d3c08/empy-3.3.4.tar.gz#sha256=73ac49785b601479df4ea18a7c79bc1304a8a7c34c02b9472cf1206ae88f01b3 (from https://pypi.org/simple/empy/). Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
Using cached empy-3.3.2.tar.gz (138 kB)
Preparing metadata (setup.py) ... error
ERROR: Command errored out with exit status 1:
command: /home/expert-bot/python3_ws/py3venv/bin/python -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-04mt1wt_/empy_104fd15b7f9e408eb4a702d46fe5de03/setup.py'"'"'; file__='"'"'/tmp/pip-install-04mt1wt_/empy_104fd15b7f9e408eb4a702d46fe5de03/setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-pip-egg-info-_fwmqok0
cwd: /tmp/pip-install-04mt1wt_/empy_104fd15b7f9e408eb4a702d46fe5de03/
Complete output (13 lines):
Traceback (most recent call last):
File "<string>", line 1, in <module>
File "/home/expert-bot/python3_ws/py3venv/lib/python3.8/site-packages/setuptools/__init__.py", line 18, in <module>
from setuptools.dist import Distribution
File "/home/expert-bot/python3_ws/py3venv/lib/python3.8/site-packages/_virtualenv.py", line 89, in exec_module
old(module)
File "/home/expert-bot/python3_ws/py3venv/lib/python3.8/site-packages/setuptools/dist.py", line 37, in <module>
from setuptools import windows_support
File "/home/expert-bot/python3_ws/py3venv/lib/python3.8/site-packages/setuptools/windows_support.py", line 2, in <module>
import ctypes
File "/usr/local/lib/python3.8/ctypes/__init__.py", line 7, in <module>
from _ctypes import Union, Structure, Array
ModuleNotFoundError: No module named '_ctypes'
----------------------------------------
WARNING: Discarding
https://files.pythonhosted.org/packages/b7/56/72a285d257c7791616960493a04f14c05ca1bf7a83dd208485cf991563bd/empy-3.3.2.tar.gz#sha256=99f016af2770c48ab57a65df7aae251360dc69a1514c15851458a71d4ddfea9c (from https://pypi.org/simple/empy/). Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.
ERROR: Could not find a version that satisfies the requirement empy (from versions: 3.3.2, 3.3.4)
ERROR: No matching distribution found for empy 解决这一问题的可能办法是什么？
回答 1
Stack Overflow用户
发布于 2022-01-26 22:50:37
看起来您的Python缺少了_ctypes模块，但我认为empy会在此之后安装。我相信_ctypes (它依赖于libffi)在安装Python本身时就已经内置到Python中了。如果您自己安装了Python，然后安装了libffi，那么尝试重新安装Python。它甚至会在终端中写出它构建的“可选”模块，在这里，_ctypes应该是其中之一。
哦，如果Python脚本很难找到libffi，那么提供configure并将libffi include目录添加到CPPFLAGS，并将libffi lib目录添加到LDFLAGS和LD_LIBRARY_PATH，例如。
export CPPFLAGS="-I/path/to/libffi/include ${CPPFLAGS}"
export LDFLAGS="-L/path/to/libffi/lib -Wl,-rpath=/path/to/libffi/lib ${LDFLAGS}"
export LD_LIBRARY_PATH="/path/to/libffi/lib:${LD_LIBRARY_PATH}"
./configure --with-system-ffi ...页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/70870990
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