diff --git a/.project-template/fill_template_vars.py b/.project-template/fill_template_vars.py
new file mode 100644
index 00000000..8d4bc35f
--- /dev/null
+++ b/.project-template/fill_template_vars.py
@@ -0,0 +1,68 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+import re
+from pathlib import Path
+
+
+def _find_files(project_root):
+    path_exclude_pattern = r"\.git($|\/)|venv|_build"
+    file_exclude_pattern = r"fill_template_vars\.py|\.swp$"
+    filepaths = []
+    for dir_path, _dir_names, file_names in os.walk(project_root):
+        if not re.search(path_exclude_pattern, dir_path):
+            for file in file_names:
+                if not re.search(file_exclude_pattern, file):
+                    filepaths.append(str(Path(dir_path, file)))
+
+    return filepaths
+
+
+def _replace(pattern, replacement, project_root):
+    print(f"Replacing values: {pattern}")
+    for file in _find_files(project_root):
+        with open(file) as f:
+            content = f.read()
+        content = re.sub(pattern, replacement, content)
+        with open(file, "w") as f:
+            f.write(content)
+
+
+def main():
+    project_root = Path(os.path.realpath(sys.argv[0])).parent.parent
+
+    module_name = input("What is your python module name? ")
+
+    pypi_input = input(f"What is your pypi package name? (default: {module_name}) ")
+    pypi_name = pypi_input or module_name
+
+    repo_input = input(f"What is your github project name? (default: {pypi_name}) ")
+    repo_name = repo_input or pypi_name
+
+    rtd_input = input(
+        f"What is your readthedocs.org project name? (default: {pypi_name}) "
+    )
+    rtd_name = rtd_input or pypi_name
+
+    project_input = input(
+        f"What is your project name (ex: at the top of the README)? (default: {repo_name}) "
+    )
+    project_name = project_input or repo_name
+
+    short_description = input("What is a one-liner describing the project? ")
+
+    _replace("<MODULE_NAME>", module_name, project_root)
+    _replace("<PYPI_NAME>", pypi_name, project_root)
+    _replace("<REPO_NAME>", repo_name, project_root)
+    _replace("<RTD_NAME>", rtd_name, project_root)
+    _replace("<PROJECT_NAME>", project_name, project_root)
+    _replace("<SHORT_DESCRIPTION>", short_description, project_root)
+
+    os.makedirs(project_root / module_name, exist_ok=True)
+    Path(project_root / module_name / "__init__.py").touch()
+    Path(project_root / module_name / "py.typed").touch()
+
+
+if __name__ == "__main__":
+    main()
diff --git a/.project-template/fill_template_vars.sh b/.project-template/fill_template_vars.sh
deleted file mode 100755
index 157c89d3..00000000
--- a/.project-template/fill_template_vars.sh
+++ /dev/null
@@ -1,50 +0,0 @@
-#!/bin/bash
-
-set -o errexit
-set -o nounset
-set -o pipefail
-
-PROJECT_ROOT=$(dirname $(dirname $(python -c 'import os, sys; sys.stdout.write(os.path.realpath(sys.argv[1]))' "$0")))
-
-echo "What is your python module name?"
-read MODULE_NAME
-
-echo "What is your pypi package name? (default: $MODULE_NAME)"
-read PYPI_INPUT
-PYPI_NAME=${PYPI_INPUT:-$MODULE_NAME}
-
-echo "What is your github project name? (default: $PYPI_NAME)"
-read REPO_INPUT
-REPO_NAME=${REPO_INPUT:-$PYPI_NAME}
-
-echo "What is your readthedocs.org project name? (default: $PYPI_NAME)"
-read RTD_INPUT
-RTD_NAME=${RTD_INPUT:-$PYPI_NAME}
-
-echo "What is your project name (ex: at the top of the README)? (default: $REPO_NAME)"
-read PROJECT_INPUT
-PROJECT_NAME=${PROJECT_INPUT:-$REPO_NAME}
-
-echo "What is a one-liner describing the project?"
-read SHORT_DESCRIPTION
-
-_replace() {
-  echo "Replacing values: $1"
-  local find_cmd=(find "$PROJECT_ROOT" ! -perm -u=x ! -path '*/.git/*' ! -path '*/venv*/*' -type f)
-
-  if [[ $(uname) == Darwin ]]; then
-    LC_ALL=C "${find_cmd[@]}" -exec sed -i '' "$1" {} +
-  else
-    "${find_cmd[@]}" -exec sed -i "$1" {} +
-  fi
-}
-_replace "s/<MODULE_NAME>/$MODULE_NAME/g"
-_replace "s/<PYPI_NAME>/$PYPI_NAME/g"
-_replace "s/<REPO_NAME>/$REPO_NAME/g"
-_replace "s/<RTD_NAME>/$RTD_NAME/g"
-_replace "s/<PROJECT_NAME>/$PROJECT_NAME/g"
-_replace "s/<SHORT_DESCRIPTION>/$SHORT_DESCRIPTION/g"
-
-mkdir -p "$PROJECT_ROOT/$MODULE_NAME"
-touch "$PROJECT_ROOT/$MODULE_NAME/__init__.py"
-touch "$PROJECT_ROOT/$MODULE_NAME/py.typed"
diff --git a/.project-template/refill_template_vars.py b/.project-template/refill_template_vars.py
new file mode 100644
index 00000000..03ab7c0c
--- /dev/null
+++ b/.project-template/refill_template_vars.py
@@ -0,0 +1,39 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+from pathlib import Path
+import subprocess
+
+
+def main():
+    template_dir = Path(os.path.dirname(sys.argv[0]))
+    template_vars_file = template_dir / "template_vars.txt"
+    fill_template_vars_script = template_dir / "fill_template_vars.py"
+
+    with open(template_vars_file, "r") as input_file:
+        content_lines = input_file.readlines()
+
+    process = subprocess.Popen(
+        [sys.executable, str(fill_template_vars_script)],
+        stdin=subprocess.PIPE,
+        stdout=subprocess.PIPE,
+        stderr=subprocess.PIPE,
+        text=True,
+    )
+
+    for line in content_lines:
+        process.stdin.write(line)
+        process.stdin.flush()
+
+    stdout, stderr = process.communicate()
+
+    if process.returncode != 0:
+        print(f"Error occurred: {stderr}")
+        sys.exit(1)
+
+    print(stdout)
+
+
+if __name__ == "__main__":
+    main()
diff --git a/.project-template/refill_template_vars.sh b/.project-template/refill_template_vars.sh
deleted file mode 100755
index 70832d3d..00000000
--- a/.project-template/refill_template_vars.sh
+++ /dev/null
@@ -1,2 +0,0 @@
-TEMPLATE_DIR=$(dirname "$0")
-<"$TEMPLATE_DIR/template_vars.txt" "$TEMPLATE_DIR/fill_template_vars.sh"