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README: run _pydemo

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xushiwei
2024-07-07 19:04:10 +08:00
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@@ -154,37 +154,13 @@ The `_pydemo` directory contains some python related demos:
* [statistics](_pydemo/statistics/statistics.go): define a python list and call `statistics.mean` to get the mean
* [matrix](_pydemo/matrix/matrix.go): a basic `numpy` demo
To run these demos, you need to set the `LLGO_LIB_PYTHON` environment variable first.
If Python is in the search path for `clang` linking, then `LLGO_LIB_PYTHON` only needs to be set to the name of the Python library. For example:
```sh
export LLGO_LIB_PYTHON=python3.12
```
You can also specify the path to tell `llgo` where the Python library is located:
```sh
export LLGO_LIB_PYTHON=/foo/bar/python3.12
```
For example, `/opt/homebrew/Frameworks/Python.framework/Versions/3.12/lib/libpython3.12.dylib` is a typical python library location under macOS. So we should set it like this:
```sh
export LLGO_LIB_PYTHON=/opt/homebrew/Frameworks/Python.framework/Versions/3.12/lib/python3.12
```
Note that the file name must be written in a platform-independent format, using `python3.12` instead of `libpython3.12.dylib`.
Then you can run the demos:
To run these demos (If you haven't installed `llgo` yet, please refer to [How to install](#how-to-install)):
```sh
cd <demo-directory> # eg. cd _pydemo/callpy
llgo run .
```
See [github.com/goplus/llgo/py](https://pkg.go.dev/github.com/goplus/llgo/py) for more detials.
## Other frequently used libraries