convert bash scripts to py (#77)

* convert bash scripts to py

.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()