diff --git a/docs/source/conf.py b/docs/source/conf.py
index 9026b17..e363f04 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -6,23 +6,23 @@
 # -- Project information -----------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#project-information
 
-project = 'learnware'
-copyright = '2023, LAMDA Group'
-author = 'LAMDA Group'
-release = '0.1.0.99'
+project = "learnware"
+copyright = "2023, LAMDA Group"
+author = "LAMDA Group"
+release = "0.1.0.99"
 
 # -- General configuration ---------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#general-configuration
 
 extensions = []
 
-templates_path = ['_templates']
+templates_path = ["_templates"]
 exclude_patterns = []
 
-language = 'zh_CN'
+language = "zh_CN"
 
 # -- Options for HTML output -------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#options-for-html-output
 
-html_theme = 'alabaster'
-html_static_path = ['_static']
+html_theme = "alabaster"
+html_static_path = ["_static"]
diff --git a/examples/example1.py b/examples/example1.py
new file mode 100644
index 0000000..e69de29
diff --git a/learnware/learnware/__init__.py b/learnware/learnware/__init__.py
index 343b891..a5f7ee7 100644
--- a/learnware/learnware/__init__.py
+++ b/learnware/learnware/__init__.py
@@ -1 +1 @@
-__version__ = "0.0.1.99"
\ No newline at end of file
+__version__ = "0.0.1.99"
diff --git a/setup.py b/setup.py
index bc3053b..4c427ed 100644
--- a/setup.py
+++ b/setup.py
@@ -1,6 +1,7 @@
 import os
 from setuptools import find_packages, setup
 
+
 def read(rel_path: str) -> str:
     here = os.path.abspath(os.path.dirname(__file__))
     with open(os.path.join(here, rel_path), encoding="utf-8") as fp:
@@ -14,6 +15,7 @@ def get_version(rel_path: str) -> str:
             return line.split(delim)[1]
     raise RuntimeError("Unable to find version string.")
 
+
 # Package meta-data.
 NAME = "learnware"
 DESCRIPTION = "learnware market project"
@@ -39,7 +41,6 @@ with open(os.path.join(here, "README.md"), encoding="utf-8") as f:
 
 
 if __name__ == "__main__":
-
     setup(
         name=NAME,
         version=VERSION,