diff --git a/.github/build_examples.py b/.github/build_examples.py
index ce75169..0748909 100644
--- a/.github/build_examples.py
+++ b/.github/build_examples.py
@@ -5,7 +5,7 @@
 
 for example in os.listdir("examples"):
     print("Use PIO to build %s" % (example))
-    pio_cmd = "pio run -d examples/%s"
+    pio_cmd = "pio run -d examples/%s" %(example)
     print(pio_cmd)
     ret = os.system(pio_cmd)
     if ret != 0:
diff --git a/.github/prepare_tools.py b/.github/prepare_tools.py
index a648370..eae85d5 100644
--- a/.github/prepare_tools.py
+++ b/.github/prepare_tools.py
@@ -132,7 +132,7 @@ def install_pio_packages(nsdk_url="https://github.com/Nuclei-Software/nuclei-sdk
     os.system("pio pkg install -g -p symlink://%s" % (os.getcwd()))
     pass
 
-def main():
+if __name__ == '__main__':
     parser = argparse.ArgumentParser(description='Prepare Nuclei Tools and Install PIO Packages.')
     parser.add_argument('--sdk', "-s", required=True, default="https://github.com/Nuclei-Software/nuclei-sdk#feature/gd32vw55x", help='URL or PATH of Nuclei SDK')