Python项目环境迁移的三种方法

pip freeze > requirements.txt

pip install -r requirements.txt

#!/bin/bash
 
# 创建一个目录来存储 wheel 文件
mkdir python_packages
 
# 创建 requirements.txt 文件
pip freeze > requirements.txt
 
# 下载 wheel 文件
pip download -r requirements.txt -d python_packages
 
# 可选：创建一个压缩文件
tar -czvf python_packages.tar.gz python_packages

pip install --no-index --find-links=python_packages -r requirements.txt

import os
import sys
import shutil
import subprocess
from pathlib import Path
import pkg_resources
 
def create_wheel(package_name, output_dir):
    try:
        subprocess.run([sys.executable, "-m", "pip", "wheel", 
                        "--no-deps", 
                        "--wheel-dir", output_dir, 
                        package_name], 
                       check=True)
        print(f"Successfully created wheel for {package_name}")
    except subprocess.CalledProcessError:
        print(f"Failed to create wheel for {package_name}")
 
def main():
    # 创建输出目录
    output_dir = Path("python_packages")
    output_dir.mkdir(exist_ok=True)
 
    # 获取已安装的包
    installed_packages = [dist.project_name for dist in pkg_resources.working_set]
 
    # 为每个包创建 wheel 文件
    for package in installed_packages:
        create_wheel(package, str(output_dir))
 
    # 创建 requirements.txt 文件
    with open("requirements.txt", "w") as f:
        for package in installed_packages:
            f.write(f"{package}=={pkg_resources.get_distribution(package).version}\n")
 
    print("Process completed. Check the 'python_packages' directory for wheel files.")
    print("A 'requirements.txt' file has been created with the list of installed packages.")
 
if __name__ == "__main__":
    main()

pip install --no-index --find-links=python_packages -r requirements.txt