ModuleNotFoundError：没有名为“flask_mysqldb”的模块

问：

我正在跑步.这是我的机器上安装的唯一版本。我pip安装了flask-mysqldb。但是，我无法导入flask_mysqldb。Python 3.7.4

我尝试了很多选择，但没有任何效果，

C:\sys\Flask\dev\projects\test\a006_myflaskapp>pip3 install flask-mysqldb
Requirement already satisfied: flask-mysqldb in c:\users\anild\appdata\local\programs\python\lib\site-packages (0.2.0)
Requirement already satisfied: Flask>=0.10 in c:\users\anild\appdata\local\programs\python\lib\site-packages (from flask-mysqldb) (1.1.1)
Requirement already satisfied: mysqlclient in c:\users\anild\appdata\local\programs\python\lib\site-packages (from flask-mysqldb) (1.4.2)
Requirement already satisfied: click>=5.1 in c:\users\anild\appdata\local\programs\python\lib\site-packages (from Flask>=0.10->flask-mysqldb) (7.0)
Requirement already satisfied: Jinja2>=2.10.1 in c:\users\anild\appdata\local\programs\python\lib\site-packages (from Flask>=0.10->flask-mysqldb) (2.10.1)
Requirement already satisfied: itsdangerous>=0.24 in c:\users\anild\appdata\local\programs\python\lib\site-packages (from Flask>=0.10->flask-mysqldb) (1.1.0)
Requirement already satisfied: Werkzeug>=0.15 in c:\users\anild\appdata\local\programs\python\lib\site-packages (from Flask>=0.10->flask-mysqldb) (0.15.5)
Requirement already satisfied: MarkupSafe>=0.23 in c:\users\anild\appdata\local\programs\python\lib\site-packages (from Jinja2>=2.10.1->Flask>=0.10->flask-mysqldb) (1.1.1)

C:\sys\Flask\dev\projects\test\a006_myflaskapp>python
Python 3.7.4 (tags/v3.7.4:e09359112e, Jul  8 2019, 19:29:22) [MSC v.1916 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import flask_mysqldb
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ModuleNotFoundError: No module named 'flask_mysqldb'
>>>