无法安装白板

Question

我没有太多的Python经验，需要一些帮助。我正在尝试安装不同的软件包但没有成功。最近我尝试使用pip install tabula-py安装 tabula-py 但我不断得到同样的回应。

如何解决这个问题？

Collecting tabula-py
WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x0000026AEB39CDC8>, 'Connection to pypi.org timed out. (connect timeout=15)')': /simple/tabula-py/
WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x0000026AEB3B0888>, 'Connection to pypi.org timed out. (connect timeout=15)')': /simple/tabula-py/
WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x0000026AEB3BF088>, 'Connection to pypi.org timed out. (connect timeout=15)')': /simple/tabula-py/
WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x0000026AEB3BF888>, 'Connection to pypi.org timed out. (connect timeout=15)')': /simple/tabula-py/
WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'ConnectTimeoutError(<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x0000026AEB3BF6C8>, 'Connection to pypi.org timed out. (connect timeout=15)')': /simple/tabula-py/
ERROR: Could not find a version that satisfies the requirement tabula-py (from versions: none)
ERROR: No matching distribution found for tabula-py

Answer 1

导致该错误是因为 pip 无法连接到服务器并下载必要的软件包并安装它 pypi.org。

首先，尝试检查是否可以连接到 pypi.org(从cmd或shell(：

ping pypi.org

如果您通过常规 shell 建立连接，则 python3 中的互联网设置可能有问题。您可以检查是否可以通过此脚本进行连接：

import urllib.request

with urllib.request.urlopen('http://pypi.org/') as response:
status = response.status
if 500 > status >= 400:
print("Connection Error from Client: " + str(status))
elif 600 > status >= 500:
print("Connection Error from Server: " + str(status))
else:
print("Connection Successful")

如果存在连接问题，请考虑下载tabula-py的 wheel 文件并将其安装到本地：

pip install /path/to/tabula_py-1.4.2-py3-none-any.whl

在No matching distribution found...的情况下： 仔细检查你的 python 版本。在某些机器上，您可能会发现多个版本的python，有时由第三方软件(即Microsoft Visual Studio(安装。使用以下命令检查您的 pip 版本：

pip -V