diff --git a/README.md b/README.md
index 8e2d9c59..0443e077 100644
--- a/README.md
+++ b/README.md
@@ -8,11 +8,23 @@ llgo - A Go compiler based on LLVM
 [![GoDoc](https://pkg.go.dev/badge/github.com/goplus/llgo.svg)](https://pkg.go.dev/github.com/goplus/llgo)
 [![Language](https://img.shields.io/badge/language-Go+-blue.svg)](https://github.com/goplus/gop)
 
-This is a Go compiler based on LLVM in order to better integrate Go with the C ecosystem. It's a subproject of [the Go+ project](https://github.com/goplus/gop).
+This is a Go compiler based on LLVM in order to better integrate Go with the C ecosystem including Python. It's a subproject of [the Go+ project](https://github.com/goplus/gop).
 
 ## C standard libary support
 
-See [github.com/goplus/llgo/c](https://pkg.go.dev/github.com/goplus/llgo/c).
+```go
+package main
+
+import "github.com/goplus/llgo/c"
+
+func main() {
+	c.Printf(c.Str("Hello world\n"))
+}
+```
+
+This is a simple example of calling the C `printf` function to print `Hello world`. Here, `c.Str` is not a function for converting a Go string to a C string, but a built-in instruction supported by llgo for generating a C string constant.
+
+See [github.com/goplus/llgo/c](https://pkg.go.dev/github.com/goplus/llgo/c) for more detials.
 
 
 ## Python support
diff --git a/cl/compile.go b/cl/compile.go
index 109126f4..62bdb0cb 100644
--- a/cl/compile.go
+++ b/cl/compile.go
@@ -486,7 +486,7 @@ func isPhi(i ssa.Instruction) bool {
 
 func (p *context) compilePhis(b llssa.Builder, block *ssa.BasicBlock) int {
 	ret := p.fn.Block(block.Index)
-	b.SetBlock(ret)
+	b.SetBlockEx(ret, llssa.AtEnd)
 	if ninstr := len(block.Instrs); ninstr > 0 {
 		if isPhi(block.Instrs[0]) {
 			n := 1
diff --git a/cl/compile_test.go b/cl/compile_test.go
index 9430b561..6f417cbe 100644
--- a/cl/compile_test.go
+++ b/cl/compile_test.go
@@ -52,6 +52,10 @@ func TestFromTestpymath(t *testing.T) {
 	cltest.Pkg(t, ssa.PkgPython+"/math", "../py/math/llgo_autogen.ll")
 }
 
+func TestPython(t *testing.T) {
+	cltest.Pkg(t, ssa.PkgPython, "../py/llgo_autogen.ll")
+}
+
 func TestRuntime(t *testing.T) {
 	cltest.Pkg(t, ssa.PkgRuntime, "../internal/runtime/llgo_autogen.ll")
 }
diff --git a/internal/build/build.go b/internal/build/build.go
index 38ccc5a8..898ea1c7 100644
--- a/internal/build/build.go
+++ b/internal/build/build.go
@@ -195,23 +195,26 @@ func buildAllPkgs(prog llssa.Program, initial []*packages.Package, mode Mode, ve
 			// skip packages that only contain declarations
 			// and set no export file
 			pkg.ExportFile = ""
-		case cl.PkgLinkIR, cl.PkgPyModule:
-			// skip packages that don't need to be compiled but need to be linked
+		case cl.PkgLinkIR, cl.PkgLinkExtern, cl.PkgPyModule:
 			pkgPath := pkg.PkgPath
 			if isPkgInLLGo(pkgPath) {
 				pkg.ExportFile = concatPkgLinkFiles(pkgPath)
 			} else {
 				panic("todo")
 			}
-		case cl.PkgLinkExtern:
-			// skip packages that don't need to be compiled but need to be linked with external library
-			linkFile := os.ExpandEnv(strings.TrimSpace(param))
-			dir, lib := filepath.Split(linkFile)
-			command := " -l " + lib
-			if dir != "" {
-				command += " -L " + dir
+			if kind == cl.PkgLinkExtern { // need to be linked with external library
+				linkFile := os.ExpandEnv(strings.TrimSpace(param))
+				dir, lib := filepath.Split(linkFile)
+				command := " -l " + lib
+				if dir != "" {
+					command += " -L " + dir
+				}
+				if isMultiLinkFiles(pkg.ExportFile) {
+					pkg.ExportFile = command + pkg.ExportFile
+				} else {
+					pkg.ExportFile = command + " " + pkg.ExportFile
+				}
 			}
-			pkg.ExportFile = command
 		default:
 			buildPkg(prog, aPkg, mode, verbose)
 			setNeedRuntimeOrPyInit(pkg, prog.NeedRuntime(), prog.NeedPyInit())
diff --git a/internal/pyimport/pyimport.go b/internal/pyimport/pyimport.go
deleted file mode 100644
index 72c23de7..00000000
--- a/internal/pyimport/pyimport.go
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- * Copyright (c) 2024 The GoPlus Authors (goplus.org). All rights reserved.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package pyimport
-
-import (
-	_ "unsafe"
-
-	"github.com/goplus/llgo/c"
-	"github.com/goplus/llgo/py"
-)
-
-const (
-	LLGoPackage = "decl"
-)
-
-/*
-func init() {
-	py.Initialize()
-	py.SetProgramName(*c.Argv)
-}
-*/
-
-//go:linkname Module C.PyImport_ImportModule
-func Module(name *c.Char) *py.Module
diff --git a/py/_demo/clpy/cleval.go b/py/_demo/clpy/cleval.go
index 13f78b80..5b67bc1e 100644
--- a/py/_demo/clpy/cleval.go
+++ b/py/_demo/clpy/cleval.go
@@ -11,7 +11,7 @@ func main() {
 	code := py.CompileString(c.Str(`print('Hello, World!')`), c.Str(`hello.py`), py.EvalInput)
 	if code != nil {
 		mod := py.ImportModule(c.Str("__main__"))
-		gbl := mod.GetDict()
+		gbl := mod.ModuleGetDict()
 
 		result := py.EvalCode(code, gbl, nil)
 
diff --git a/py/llgo_autogen.lla b/py/llgo_autogen.lla
new file mode 100644
index 00000000..dd90aea6
Binary files /dev/null and b/py/llgo_autogen.lla differ
diff --git a/py/module.go b/py/module.go
index 8dddecbf..59e669c5 100644
--- a/py/module.go
+++ b/py/module.go
@@ -22,18 +22,13 @@ import (
 	"github.com/goplus/llgo/c"
 )
 
-// Module represents a Python module object.
-type Module struct {
-	Object
-}
-
 // -----------------------------------------------------------------------------
 
 // This is a wrapper around py.Import which takes a const char* as an argument
 // instead of an Object.
 //
 //go:linkname ImportModule C.PyImport_ImportModule
-func ImportModule(name *c.Char) *Module
+func ImportModule(name *c.Char) *Object
 
 // This is a higher-level interface that calls the current “import hook function” (with
 // an explicit level of 0, meaning absolute import). It invokes the __import__() function
@@ -43,7 +38,7 @@ func ImportModule(name *c.Char) *Module
 // This function always uses absolute imports.
 //
 //go:linkname Import C.PyImport_Import
-func Import(name *Object) *Module
+func Import(name *Object) *Object
 
 // Return the dictionary object that implements module’s namespace; this object is the same
 // as the __dict__ attribute of the module object. If module is not a module object (or a
@@ -52,7 +47,7 @@ func Import(name *Object) *Module
 // It is recommended extensions use other Module and Object functions rather than directly
 // manipulate a module’s __dict__.
 //
-// llgo:link (*Module).GetDict C.PyModule_GetDict
-func (m *Module) GetDict() *Object { return nil }
+// llgo:link (*Object).ModuleGetDict C.PyModule_GetDict
+func (m *Object) ModuleGetDict() *Object { return nil }
 
 // -----------------------------------------------------------------------------
diff --git a/py/object.go b/py/object.go
index cb973653..6c3d3cc2 100644
--- a/py/object.go
+++ b/py/object.go
@@ -128,7 +128,7 @@ func (o *Object) CallFunctionObjArgs(__llgo_va_list ...any) *Object { return nil
 
 // llgo:link (*Object).CallMethod C.PyObject_CallMethod
 func (o *Object) CallMethod(name *c.Char, format *c.Char, __llgo_va_list ...any) *Object {
-	panic("unreachable")
+	return nil
 }
 
 // llgo:link (*Object).CallMethodObjArgs C.PyObject_CallMethodObjArgs