如何解决FB-Prophet安装时的pip依赖解析冲突错误？

问题场景 #

运行FB Prophet时触发依赖安装，出现holidays版本冲突：

Installing collected packages: holidays
Attempting uninstall: holidays
Found existing installation: holidays 0.21.13
Uninstalling holidays-0.21.13:
Successfully uninstalled holidays-0.21.13
ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts.
neuralprophet 0.6.2 requires holidays<0.22,>=0.21, but you have holidays 0.42 which is incompatible.
Successfully installed holidays-0.42
WARNING: The following packages were previously imported in this runtime:
[holidays]
You must restart the runtime in order to use newly installed versions.

解决方法 #

方法1：安装兼容双工具的holidays版本 #

执行命令安装同时满足FB Prophet和NeuralProphet要求的holidays版本：

pip install holidays==0.21.13

安装完成后重启运行环境（如Jupyter内核、终端会话），确保版本生效。

方法2：用虚拟环境隔离依赖 #

如果需要同时使用FB Prophet和NeuralProphet，为两者分别创建独立虚拟环境：

• 为FB Prophet创建环境：

python -m venv prophet_env
# Windows激活
prophet_env\Scripts\activate
# Linux/macOS激活
source prophet_env/bin/activate
pip install fbprophet

• 为NeuralProphet创建环境：

python -m venv neuralprophet_env
# Windows激活
neuralprophet_env\Scripts\activate
# Linux/macOS激活
source neuralprophet_env/bin/activate
pip install neuralprophet==0.6.2

通过环境隔离彻底避免依赖冲突。

方法3：升级NeuralProphet兼容高版本holidays #

检查NeuralProphet最新版本是否放宽了holidays版本限制，执行升级：

pip install --upgrade neuralprophet

升级后确认依赖兼容，再重启运行环境即可。

内容的提问来源于stack exchange，提问作者Blessy Varghese