Anaconda 快速将某个虚拟环境A中的包在另一个虚拟环境B中安装

前言

有时无法避免使用的虚拟环境无法使用，但是前期又安装了许多包一个个安装费时费力。采用以下步骤可以便捷的新建一个虚拟环境，将以前虚拟环境中的包快速安装到新环境中。

步骤

1. 打开Anaconda Prompt：

从开始菜单搜索并打开Anaconda Prompt。在Anaconda Prompt中，激活您的虚拟环境：

conda activate LASimulation
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2. 然后导出包列表到一个文件：

pip freeze > LASimulation_packages.txt
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3. 创建新的虚拟环境qtenv：

conda create --name qtenv python
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4. 激活新的qtenv虚拟环境：

conda activate qtenv
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5. 安装LASimulation_packages.txt中的包到qtenv环境：

pip install -r LASimulation_packages.txt
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以上步骤将帮助您在Windows系统的Anaconda环境中复制一个虚拟环境。这里pip freeze命令导出的是使用pip安装的包，而conda list --export命令则会导出使用conda安装的包。如果您同时使用了conda和pip来管理包，您可能需要分别导出两个列表，并在新环境中相应地使用conda install和pip install来安装它们。

各类问题汇总

WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLEOFError(8, 'EOF occurred in violation of protocol (_ssl.c:1131)'))': /simple/bista/
WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLEOFError(8, 'EOF occurred in violation of protocol (_ssl.c:1131)'))': /simple/bista/
WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLEOFError(8, 'EOF occurred in violation of protocol (_ssl.c:1131)'))': /simple/bista/
WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLEOFError(8, 'EOF occurred in violation of protocol (_ssl.c:1131)'))': /simple/bista/
WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLEOFError(8, 'EOF occurred in violation of protocol (_ssl.c:1131)'))': /simple/bista/
Could not fetch URL https://pypi.org/simple/bista/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/bista/ (Caused by SSLError(SSLEOFError(8, 'EOF occurred in violation of protocol (_ssl.c:1131)'))) - skipping
ERROR: Could not find a version that satisfies the requirement bista (from versions: none)
ERROR: No matching distribution found for bista

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更换源

pip install pyarmor -i http://mirrors.aliyun.com/pypi/simple --trusted-host mirrors.aliyun.com
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