diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..73f69e0
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,8 @@
+# Default ignored files
+/shelf/
+/workspace.xml
+# Datasource local storage ignored files
+/dataSources/
+/dataSources.local.xml
+# Editor-based HTTP Client requests
+/httpRequests/
diff --git a/.idea/modules.xml b/.idea/modules.xml
new file mode 100644
index 0000000..48679a3
--- /dev/null
+++ b/.idea/modules.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectModuleManager">
+    <modules>
+      <module fileurl="file://$PROJECT_DIR$/.idea/readme-code-testing.iml" filepath="$PROJECT_DIR$/.idea/readme-code-testing.iml" />
+    </modules>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/readme-code-testing.iml b/.idea/readme-code-testing.iml
new file mode 100644
index 0000000..5e764c4
--- /dev/null
+++ b/.idea/readme-code-testing.iml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<module type="WEB_MODULE" version="4">
+  <component name="Go" enabled="true" />
+  <component name="NewModuleRootManager">
+    <content url="file://$MODULE_DIR$" />
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..94a25f7
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/README.md b/README.md
index e524656..41d296c 100644
--- a/README.md
+++ b/README.md
@@ -16,8 +16,7 @@ The following code block has a file path `src/helloworld.py`:
 
 ```python:src/helloworld.py
 def hello():
-    return "v1.0.0 world"
-
+    return "v1.0.0 bbb world"
 ```
 
 See [src/helloworld.py](./src/helloworld.py) as:
diff --git a/src/helloworld.py b/src/helloworld.py
index 822558c..4c7d8ea 100644
--- a/src/helloworld.py
+++ b/src/helloworld.py
@@ -1,2 +1,2 @@
 def hello():
-    return "v1.0.0 world"
+    return "v1.0.0 bbb world"
\ No newline at end of file
diff --git a/test_src/test_helloworld.py b/test_src/test_helloworld.py
index 8cd44f6..5aabd75 100644
--- a/test_src/test_helloworld.py
+++ b/test_src/test_helloworld.py
@@ -2,4 +2,4 @@
 
 
 def test_hello():
-    assert hello() == "v1.0.0 world"
+    assert hello() == "v1.0.0 bbb world"