diff --git a/.gitignore b/.gitignore
index 12ee45f..2e17516 100644
--- a/.gitignore
+++ b/.gitignore
@@ -135,5 +135,4 @@ dmypy.json
 .pyre/
 .activate.sh
 .DS_Store
-.MyAppTest
-
+.MyAppTest/
\ No newline at end of file
diff --git a/activate.sh b/activate.sh
new file mode 100755
index 0000000..06fb501
--- /dev/null
+++ b/activate.sh
@@ -0,0 +1,50 @@
+
+#!/bin/bash
+set -e
+
+# Get the directory of the current script
+script_dir="$( cd "$( dirname "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )"
+
+# Change to that directory
+cd "$script_dir"
+
+# Confirm the current directory
+echo "Changed directory to: $(pwd)"
+echo "activate.sh change working directory to $(pwd)"
+
+
+if [ "$IN_ACTIVATED_ENV" = "1" ]; then
+  IN_ACTIVATED_ENV=1
+else
+  IN_ACTIVATED_ENV=0
+fi
+
+# If the 'venv' directory doesn't exist, print a message and exit.
+if [ ! -d "venv" ]; then
+  cwd=$(pwd)
+  echo "The 'venv' directory in $cwd does not exist, creating..."
+  echo "OSTYPE: $OSTYPE"
+  case "$OSTYPE" in
+    darwin*|linux-gnu*)
+      python3 ./install.py
+      ;;
+    *)
+      python ./install.py
+      ;;
+  esac
+
+  . ./venv/bin/activate
+  export IN_ACTIVATED_ENV=1
+  this_dir=$(pwd)
+  export PATH="$this_dir:$PATH"
+  echo "Environment created."
+  pip install -e .
+  exit 0
+fi
+
+if [[ "$IN_ACTIVATED_ENV" != "1" ]]; then
+  . ./venv/bin/activate
+  export IN_ACTIVATED_ENV=1
+  this_dir=$(pwd)
+  export PATH="$this_dir:$PATH"
+fi
diff --git a/src/create_python_cmd/createapp.py b/src/create_python_cmd/createapp.py
index 3dd6311..6ca2e99 100644
--- a/src/create_python_cmd/createapp.py
+++ b/src/create_python_cmd/createapp.py
@@ -17,9 +17,7 @@
 def check_name(app_name: str) -> None:
     """Check the name of the application."""
     if not app_name.isidentifier():
-        raise ValueError(
-            "The name of the application is not a valid Python identifier."
-        )
+        raise ValueError("The name of the application is not a valid Python identifier.")
 
 
 def check_semantic_version(version: str) -> None:
@@ -27,9 +25,7 @@ def check_semantic_version(version: str) -> None:
     version_list = version.split(".")
     for v in version_list:
         if not v.isnumeric():
-            raise ValueError(
-                "The version of the application is not a valid semantic version."
-            )
+            raise ValueError("The version of the application is not a valid semantic version.")
 
 
 def remove_double_blank_lines(lines: list) -> list:
@@ -49,6 +45,7 @@ def remove_double_blank_lines(lines: list) -> list:
 
 
 def do_create_python_app(
+    app_name: str,
     app_description: str,
     app_author: str,
     app_keywords: str,  # Example "keyword1, keyword2, keyword3"
@@ -61,7 +58,6 @@ def do_create_python_app(
     # get app name from the github url
     cwd = cwd or os.getcwd()
     os.makedirs(cwd, exist_ok=True)
-    app_name = github_url.split("/")[-1]
     app_name_underscore = app_name.replace("-", "_")
     with tempfile.TemporaryDirectory() as tmpdir:
         # download https://github.com/zackees/template-python-cmd
@@ -72,9 +68,7 @@ def do_create_python_app(
         for root, dirs, files in os.walk(tmpdir):
             for d in dirs:
                 if d == "template-python-cmd" or d == "template_python_cmd":
-                    shutil.move(
-                        os.path.join(root, d), os.path.join(root, app_name_underscore)
-                    )
+                    shutil.move(os.path.join(root, d), os.path.join(root, app_name_underscore))
         pyproject = os.path.join(tmpdir, "pyproject.toml")
         with open(pyproject, encoding="utf-8", mode="r") as pyproject_file:
             pyproject_lines = pyproject_file.read().splitlines()
@@ -94,9 +88,7 @@ def do_create_python_app(
                     pyproject_lines[i] = ""
             else:
                 if line.startswith("test_cmd ="):
-                    pyproject_lines[
-                        i
-                    ] = f'{command_name} = "{app_name_underscore}.cli:main"'
+                    pyproject_lines[i] = f'{command_name} = "{app_name_underscore}.cli:main"'
         ########
         # Transform pyproject file with the new information
         pyproject_lines = remove_double_blank_lines(pyproject_lines)
@@ -154,6 +146,7 @@ def create_python_app() -> None:
     # check if git exists
     if not shutil.which("git"):
         raise RuntimeError("Git is not installed.")
+    app_name: str
     while True:
         try:
             app_name = input("Python app name: ").replace("-", "_")
@@ -190,6 +183,7 @@ def create_python_app() -> None:
                 print(f"Error: {e}, try again")
                 continue
     do_create_python_app(
+        app_name=app_name,
         app_description=app_description,
         app_author=app_author,
         app_keywords=app_keywords,
diff --git a/test b/test
new file mode 100755
index 0000000..4d584b5
--- /dev/null
+++ b/test
@@ -0,0 +1,4 @@
+#!/bin/bash
+set -e
+
+pytest tests
\ No newline at end of file
diff --git a/tests/test_createapp.py b/tests/test_createapp.py
index 441e9c8..3df0817 100644
--- a/tests/test_createapp.py
+++ b/tests/test_createapp.py
@@ -27,6 +27,7 @@ def test_imports(self) -> None:
         if os.path.exists(outdir):
             shutil.rmtree(outdir)
         do_create_python_app(
+            "my-app",
             app_description="MyAppTest description",
             app_author="Firstname Lastname",
             app_keywords="myapp test",