Satisfy analyses

setup.py

@@ -2,19 +2,20 @@
 
 from os import path
 
-this_directory = path.abspath(path.dirname(__file__))
-try:
-    with open(path.join(this_directory, 'README.md'), encoding='utf-8') as f:
-        long_description = f.read()
-except FileNotFoundError:
-    # This happens when `snyk test` analyzes `setup.py` in a temporary directory.
-    long_description = 'See https://github.com/paypay/paypayopa-sdk-python'
+def fetchLongDescription():
+    this_directory = path.abspath(path.dirname(__file__))
+    try:
+        with open(path.join(this_directory, 'README.md'), encoding='utf-8') as f:
+            return f.read()
+    except FileNotFoundError:
+        # This happens when `snyk test` analyzes `setup.py` in a temporary directory.
+        return 'See https://github.com/paypay/paypayopa-sdk-python'
 
 setup(
     name="paypayopa",
     version="0.0.0",
     description="PayPay OPA SDK",
-    long_description=long_description,
+    long_description=fetchLongDescription(),
     long_description_content_type='text/markdown',
     author="Team PayPay",
     author_email="opensource@paypay-corp.co.jp",