使用Pymc3遇到的Error
1、pymc3安装
使用Anaconda3默认环境安装
conda install pymc3
pip install -U h5py
linux安装pymc3:
sudo apt-get install xxx
头文件：#!/usr/bin/env python
Linux安装pip3：sudo apt-get install python3-pip
sudo apt-get install vim, jupyter, pymc3
2、matplotlib在绘图时要使用中文的方法
插入以下代码：
plt.rcParams['font.sans-serif'] = ['SimHei'] # 用来正常显示中文标签
plt.rcParams['axes.unicode_minus'] = False # 用来正常显示负号
3、pymc3程序中报‘CVM’错误
pip install -U pymc3
4、pymc3程序中的userwarning
UserWarning: The 'normed' kwarg is deprecated, and has been replaced by the 'density' kwarg.
warnings.warn("The 'normed' kwarg is deprecated, and has been "）
解决方案：将程序函数中 'normed' 改为'density'
5、pymc3程序的RuntimeError
RuntimeError: An attempt has been made to start a new process before the current process has finished its bootstrapping phase. This probably means that you are not using fork to start your child processes and you have forgotten to use the proper idiom in the main module:
if __name__ == '__main__':
freeze_support() ...
The "freeze_support()" line can be omitted if the program is not going to be frozen to produce an executable.
解决方案：在程序开头添加
from multiprocessing import freeze_support
if __name__ == '__main__':
代码
freeze_support()
6、pymc3程序中的MemoryError
将’ElemwiseCategorical‘更改为‘CategoricalGibbsMetropolis’
7、pymc3的方法错误
’pm.df_summary‘改为‘pm.summary'
8、linux下报_tkinter.TclError
_tkinter.TclError: no display name and no $DISPLAY environment variable
添加代码：
import matplotlib matplotlib.use('Agg')
9、Linux系统pymc3中的RuntimeWarning
RuntimeWarning: numpy.dtype size changed, may indicate binary incompatibility. Expected 96, got 88
return f(*args, **kwds)
解决方案：
from warnings import filterwarnings
filterwarnings("ignore", message=r'numpy.dtype')
10、linux pip3 importerror: cannot import name 'main'
sudo python3 -m pip uninstall pip
sudo apt install python3-pip --reinstall