记安装hdbscan出现的错误_could not build wheels for hdbscan which use pep 5

1、安装dbscan出现如下错误

ERROR: Could not build wheels for gevent which use PEP 517 and cannot be installed directly
error Microsoft Visual C++ 14.0 is required

2、解决

不用怀疑了，出现该问题，肯定是c++编译有问题，请按照下面的方式安装

下载地址：

https://visualstudio.microsoft.com/thank-you-downloading-visual-studio/?sku=BuildTools&rel=16

下载完以后直接安装，大概是6G，耐心等待，安装完以后重启，然后再安装结果如下

C:\Users>pip install hdbscan
Collecting hdbscan
  Using cached hdbscan-0.8.27.tar.gz (6.4 MB)
  Installing build dependencies ... done
  Getting requirements to build wheel ... done
    Preparing wheel metadata ... done
Requirement already satisfied: scikit-learn>=0.20 in d:\python362\lib\site-packages (from hdbscan) (0.24.2)
Requirement already satisfied: scipy>=1.0 in d:\python362\lib\site-packages (from hdbscan) (1.5.4)
Requirement already satisfied: joblib>=1.0 in d:\python362\lib\site-packages (from hdbscan) (1.0.1)
Requirement already satisfied: numpy>=1.16 in d:\python362\lib\site-packages (from hdbscan) (1.19.5)
Requirement already satisfied: cython>=0.27 in d:\python362\lib\site-packages (from hdbscan) (0.29.10)
Requirement already satisfied: six in d:\python362\lib\site-packages (from hdbscan) (1.16.0)
Requirement already satisfied: threadpoolctl>=2.0.0 in d:\python362\lib\site-packages (from scikit-learn>=0.20->hdbscan) (2.1.0)
Building wheels for collected packages: hdbscan
  Building wheel for hdbscan (PEP 517) ... done
  Created wheel for hdbscan: filename=hdbscan-0.8.27-cp36-cp36m-win_amd64.whl size=633614 sha256=a993315ca46394729a72adb1746e77ed4ff8d46334a8ab2050b5ecb8000d06f2
  Stored in directory: c:\users\appdata\local\pip\cache\wheels\70\52\fe\83ef5a0e879c48df9968d931d41046226e4cb19a166f0223d2
Successfully built hdbscan
Installing collected packages: hdbscan
Successfully installed hdbscan-0.8.27