diff --git a/README.md b/README.md
index 0443e077..02e8dbe2 100644
--- a/README.md
+++ b/README.md
@@ -29,7 +29,24 @@ See [github.com/goplus/llgo/c](https://pkg.go.dev/github.com/goplus/llgo/c) for
 
 ## Python support
 
-TODO
+You can load a Python library in llgo! For example:
+
+```go
+package main
+
+import (
+	"github.com/goplus/llgo/c"
+	"github.com/goplus/llgo/py"
+	"github.com/goplus/llgo/py/math"
+)
+
+func main() {
+	x := math.Sqrt(py.Float(2))
+	c.Printf(c.Str("sqrt(2) = %f\n"), x.Float64())
+}
+```
+
+Here, We call `py.Float(2)` to create a Python floating point number 2, and pass it to Python’s `math.sqrt` to get `x`. Then use `x.Float64()` to convert the Python object to Go's `float64` type, and finally we print the value through C `printf`.
 
 
 ## Other frequently used libraries
@@ -74,11 +91,10 @@ The `_demo` directory contains our demos (it start with `_` to prevent the `go`
 * [genints](_demo/genints/genints.go): various forms of closure usage (including C function, recv.method and anonymous function)
 * [llama2-c](_demo/llama2-c): inference Llama 2 (It's the first llgo AI example)
 
-And the `py/_demo` directory contains python related demos:
+And the `_pydemo` directory contains python related demos:
+
+* [callpy](_pydemo/callpy/callpy.go): call Python standard library function `math.sqrt`
 
-* [hellopy](py/_demo/hellopy/hello.go): link Python to Go and say `Hello world`
-* [clpy](py/_demo/clpy/cleval.go): compile Python code and eval
-* [callpy](py/_demo/callpy/call.go): call Python standard library function `math.sqrt`
 
 ### How to run demos
 
@@ -89,7 +105,7 @@ cd <demo-directory>  # eg. cd _demo/genints
 llgo run .
 ```
 
-To run the demos in directory `py/_demo`, you need to set the `LLGO_LIB_PYTHON` environment variable first. Assuming you use Python 3.12, and the `libpython3.12.so` (or `libpython3.12.dylib` or `python3.12.lib`) file is in the /foo/bar directory, then you need to set `LLGO_LIB_PYTHON` to:
+To run the demos in directory `_pydemo`, you need to set the `LLGO_LIB_PYTHON` environment variable first. Assuming you use Python 3.12, and the `libpython3.12.so` (or `libpython3.12.dylib` or `python3.12.lib`) file is in the /foo/bar directory, then you need to set `LLGO_LIB_PYTHON` to:
 
 ```sh
 export LLGO_LIB_PYTHON=/foo/bar/python3.12
@@ -101,9 +117,9 @@ For example, `/opt/homebrew/Frameworks/Python.framework/Versions/3.12/libpython3
 export LLGO_LIB_PYTHON=/opt/homebrew/Frameworks/Python.framework/Versions/3.12/python3.12
 ```
 
-Then you can run the demos in directory `py/_demo`:
+Then you can run the demos in directory `_pydemo`:
 
 ```sh
-cd <demo-directory>  # eg. cd py/_demo/hellopy
+cd <demo-directory>  # eg. cd _pydemo/callpy
 llgo run .
 ```