Python 3.9 compatible NumPy version implementation

Learn about the NumPy version that is compatible with Python 3.9. According to search results, here are some versions of NumPy that are compatible with Python 3.9:

NumPy 1.21.1: This is a version of NumPy that is compatible with Python 3.9. You can install this version of NumPy by running the following command:
```
pip install numpy==1.21.1
```
NumPy 1.26.0: According to the version correspondence table, NumPy 1.26.0 is compatible with Python 3.9 to Python 3.12. You can install it with the following command:
```
pip install numpy==1.26.0
```
NumPy 1.25.0: Also compatible with Python 3.9 to Python 3.11. The installation command is as follows:
```
pip install numpy==1.25.0
```
NumPy 1.24.0: Compatible with Python 3.8 to Python 3.11. The installation command is as follows:
```
pip install numpy==1.24.0
```
NumPy 1.23.0: Compatible with Python 3.8 to Python 3.10. The installation command is as follows:
```
pip install numpy==1.23.0
```
NumPy 1.22.0: Compatible with Python 3.8 to Python 3.10. The installation command is as follows:
```
pip install numpy==1.22.0
```
NumPy 1.21.0: Compatible with Python 3.7 to Python 3.9. The installation command is as follows:
```
pip install numpy==1.21.0
```

NumPy version compatible with Python 3.8:

NumPy 1.23.0: Compatible with Python 3.8 to Python 3.10.
NumPy 1.22.0: Compatible with Python 3.8 to Python 3.10.
NumPy 1.21.0: Compatible with Python 3.7 to Python 3.9.
NumPy 1.20.0: Compatible with Python 3.8 and above.
NumPy 1.19.1: There are user reports that are compatible with Python 3.8.

Select the appropriate NumPy version to install according to the specific needs. If you need the latest features and improvements, you can choose a newer version; if your project depends on a specific version of NumPy, it is important to choose a NumPy version that is compatible with that version.