如何在Anaconda 4.3.X版上安装PyQt4

Question

我正在尝试将当前版本的PyQt5暂时降级为PyQt4。但是，此命令conda install pyqt=4.11只会产生此错误。

UnsatisfiableError: The following specifications were found to be in conflict:
  - pyqt 4.11* -> python 2.7*
  - python 3.6*

我该怎么做才能解决此问题？

Answer 1

使用： conda info pyqt=4

您可以看到哪些Python版本正在运行。目前，与pyqt4配合使用的最新Python3为3.5

现在：

# Create new environment with python 3.5
conda create -n py35_qt4 python=3.5 anaconda

# Activate the new environment
activate py35_qt4

# Remove pyqt5
conda remove pyqt

# Install the PyQt4 package in the new environment
conda install pyqt=4