无法使用 python 2,7 虚拟环境进行 pip 安装
Cannot pip install with python 2,7 virtual environment
我正在尝试使用找到的以下 OCR 项目 here on github。我正在使用 python 3 虚拟环境。我在 Windows。我使用 Python 3.6.7 成功安装 requirements.txt，但是当我尝试执行 python install setup.py 时，出现以下错误：
AssertionError: you must install and use OCRopus with Python version 2.7 or later, but not Python 3.x
话虽如此，我又返回并尝试使用 Python 2.7 和 virtual environment 使用 pyenv-win link。当我尝试使用 python 2.7 的虚拟环境安装 requirements.txt 时，出现以下错误：
DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip, can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support
C:\Users\User\venv\ocropus\lib\site-packages\pip\_vendor\urllib3\util\ssl_.py:380: SNIMissingWarning: An HTTPS request has been made, but the SNI (Server Name Indication) extension to TLS is not available on this platform. This may cause the server to present an incorrect TLS certificate, which can cause validation failures. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
SNIMissingWarning,
C:\Users\User\venv\ocropus\lib\site-packages\pip\_vendor\urllib3\util\ssl_.py:139: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
InsecurePlatformWarning,
WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '_ssl.c:499: error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version'),)': /simple/numpy/
C:\Users\User\venv\ocropus\lib\site-packages\pip\_vendor\urllib3\util\ssl_.py:139: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
InsecurePlatformWarning,
WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '_ssl.c:499: error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version'),)': /simple/numpy/
C:\Users\User\venv\ocropus\lib\site-packages\pip\_vendor\urllib3\util\ssl_.py:139: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
InsecurePlatformWarning,
WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '_ssl.c:499: error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version'),)': /simple/numpy/
C:\Users\User\venv\ocropus\lib\site-packages\pip\_vendor\urllib3\util\ssl_.py:139: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
InsecurePlatformWarning,
WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '_ssl.c:499: error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version'),)': /simple/numpy/
C:\Users\User\venv\ocropus\lib\site-packages\pip\_vendor\urllib3\util\ssl_.py:139: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
InsecurePlatformWarning,
WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '_ssl.c:499: error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version'),)': /simple/numpy/
Could not fetch URL https://pypi.org/simple/numpy/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/numpy/ (Caused by SSLError(SSLError(1, '_ssl.c:499: error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version'),)) - skipping
C:\Users\User\venv\ocropus\lib\site-packages\pip\_vendor\urllib3\util\ssl_.py:139: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
InsecurePlatformWarning,
ERROR: Could not find a version that satisfies the requirement numpy (from versions: none)
ERROR: No matching distribution found for numpy
Could not fetch URL https://pypi.org/simple/pip/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/pip/ (Caused by SSLError(SSLError(1, '_ssl.c:499: error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version'),)) - skipping
C:\Users\User\venv\ocropus\lib\site-packages\pip\_vendor\urllib3\util\ssl_.py:139: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
InsecurePlatformWarning,
(ocropus)
这是否意味着我根本无法使用 python 2.7 安装这些 python 软件包？我的项目必须使用这个存储库。
再次阅读您的错误，您将在错误的第二行看到：
This may cause the server to present an incorrect TLS certificate,
这些所有错误都是 SSL 警告，如错误中所述，python 告诉您将 python 升级到 python 3，但由于 OCR 项目使用 python 版本 2，所以你有两个解决方案：
- 或者，手动下载要求并安装它们
- 或者，退出 OCR 项目，因为 python 2 已经过时，不再支持
希望我已经回答了你的问题
对于将来偶然发现此问题的任何人，ocropy needs Python 2.7 but numpy and scipy newest versions dropped Python 2.7 support.但是，您仍然可以使用它们，但问题是我们的开发人员将停止支持错误修复。
我的问题主要是 Python 我的系统 (windows) 的全球版本是 3.6.7 而 ocropus 需要 2.7。我为 Python 2.7 下载了一个损坏的可执行文件，它没有安装 Scripts 文件夹，因此 pip 最终根本无法工作。
已关注 this tutorial that shows how to install another version of python (2.7) and the problem was solved when I downloaded the following executable
为了 virtualenv 与 python 2.7 一起正确使用 virtualenv 使用以下命令
# dont forget to add python.exe
virtualenv -p C:\Python27\python.exe venv/ocropus
祝你好运。
我正在尝试使用找到的以下 OCR 项目 here on github。我正在使用 python 3 虚拟环境。我在 Windows。我使用 Python 3.6.7 成功安装 requirements.txt，但是当我尝试执行 python install setup.py 时，出现以下错误：
AssertionError: you must install and use OCRopus with Python version 2.7 or later, but not Python 3.x
话虽如此，我又返回并尝试使用 Python 2.7 和 virtual environment 使用 pyenv-win link。当我尝试使用 python 2.7 的虚拟环境安装 requirements.txt 时，出现以下错误：
DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no longer maintained. pip 21.0 will drop support for Python 2.7 in January 2021. More details about Python 2 support in pip, can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support
C:\Users\User\venv\ocropus\lib\site-packages\pip\_vendor\urllib3\util\ssl_.py:380: SNIMissingWarning: An HTTPS request has been made, but the SNI (Server Name Indication) extension to TLS is not available on this platform. This may cause the server to present an incorrect TLS certificate, which can cause validation failures. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
SNIMissingWarning,
C:\Users\User\venv\ocropus\lib\site-packages\pip\_vendor\urllib3\util\ssl_.py:139: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
InsecurePlatformWarning,
WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '_ssl.c:499: error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version'),)': /simple/numpy/
C:\Users\User\venv\ocropus\lib\site-packages\pip\_vendor\urllib3\util\ssl_.py:139: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
InsecurePlatformWarning,
WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '_ssl.c:499: error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version'),)': /simple/numpy/
C:\Users\User\venv\ocropus\lib\site-packages\pip\_vendor\urllib3\util\ssl_.py:139: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
InsecurePlatformWarning,
WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '_ssl.c:499: error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version'),)': /simple/numpy/
C:\Users\User\venv\ocropus\lib\site-packages\pip\_vendor\urllib3\util\ssl_.py:139: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
InsecurePlatformWarning,
WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '_ssl.c:499: error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version'),)': /simple/numpy/
C:\Users\User\venv\ocropus\lib\site-packages\pip\_vendor\urllib3\util\ssl_.py:139: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
InsecurePlatformWarning,
WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '_ssl.c:499: error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version'),)': /simple/numpy/
Could not fetch URL https://pypi.org/simple/numpy/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/numpy/ (Caused by SSLError(SSLError(1, '_ssl.c:499: error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version'),)) - skipping
C:\Users\User\venv\ocropus\lib\site-packages\pip\_vendor\urllib3\util\ssl_.py:139: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
InsecurePlatformWarning,
ERROR: Could not find a version that satisfies the requirement numpy (from versions: none)
ERROR: No matching distribution found for numpy
Could not fetch URL https://pypi.org/simple/pip/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/pip/ (Caused by SSLError(SSLError(1, '_ssl.c:499: error:1407742E:SSL routines:SSL23_GET_SERVER_HELLO:tlsv1 alert protocol version'),)) - skipping
C:\Users\User\venv\ocropus\lib\site-packages\pip\_vendor\urllib3\util\ssl_.py:139: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. You can upgrade to a newer version of Python to solve this. For more information, see https://urllib3.readthedocs.io/en/latest/advanced-usage.html#ssl-warnings
InsecurePlatformWarning,
(ocropus)
这是否意味着我根本无法使用 python 2.7 安装这些 python 软件包？我的项目必须使用这个存储库。
再次阅读您的错误，您将在错误的第二行看到：
This may cause the server to present an incorrect TLS certificate,
这些所有错误都是 SSL 警告，如错误中所述，python 告诉您将 python 升级到 python 3，但由于 OCR 项目使用 python 版本 2，所以你有两个解决方案：
- 或者，手动下载要求并安装它们
- 或者，退出 OCR 项目，因为 python 2 已经过时，不再支持
希望我已经回答了你的问题
对于将来偶然发现此问题的任何人，ocropy needs Python 2.7 but numpy and scipy newest versions dropped Python 2.7 support.但是，您仍然可以使用它们，但问题是我们的开发人员将停止支持错误修复。
我的问题主要是 Python 我的系统 (windows) 的全球版本是 3.6.7 而 ocropus 需要 2.7。我为 Python 2.7 下载了一个损坏的可执行文件，它没有安装 Scripts 文件夹，因此 pip 最终根本无法工作。
已关注 this tutorial that shows how to install another version of python (2.7) and the problem was solved when I downloaded the following executable
为了 virtualenv 与 python 2.7 一起正确使用 virtualenv 使用以下命令
# dont forget to add python.exe
virtualenv -p C:\Python27\python.exe venv/ocropus
祝你好运。