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+---
+icon: dot
+label: 'Using dynamic library'
+order: 45
+---
+
+You can import a native module from a dynamic library at runtime.
+This feature is supported on Windows, Linux, macOS, and Android.
+
+## Create a module as a dynamic library
+
+Implement a `pkpy_module__init__` function and export it as a symbol.
+This is the entry point of the module. When users call `__import__` function,
+the VM will call this function to initialize the module.
+
+You can create one or more modules inside `pkpy_module__init__` function,
+and return the name of the module you want users to import directly.
+
+You should use C-APIs to interact with the VM in the dynamic library.
+This is to make sure the dynamic library is compatible with different compilers.
+
+```c
+#include "pocketpy_c.h"
+#include <stdio.h>
+#include <stdlib.h>
+
+static int hello(pkpy_vm* vm){
+    printf("Hello from dylib!\n");
+    return 0;
+}
+
+PK_EXPORT
+const char* pkpy_module__init__(pkpy_vm* vm, const char* version){
+    printf("version: %s\n", version);
+    pkpy_push_function(vm, "hello()", hello);
+    pkpy_push_module(vm, "test");
+    pkpy_setattr(vm, pkpy_name("hello"));
+    // check if initialization failed
+    if(pkpy_clear_error(vm, NULL)) return NULL;
+    return "test";
+}
+```
+
+## Load a dynamic library
+
+You can load a dynamic library with `__import__` function with a path to the library.
+
+```python
+test = __import__("test.dll")   # Windows
+
+test = __import__("libtest.so") # Linux
+
+test = __import__("libtest.dylib") # macOS
+
+test = __import__("libtest.so") # Android
+
+test.hello()                # Hello from dylib!
+```
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