diff --git a/Cargo.toml b/Cargo.toml
index 3a26d79..f59fc65 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,7 +10,6 @@ repository = "https://git.cscherr.de/PlexSheep/plexcryptool/"
 license = "MIT"
 keywords = ["cryptology", "pyo3", "library", "dhbw"]
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 [lib]
 name = "plexcryptool"
 crate-type = ["cdylib"]
diff --git a/plexcryptool/__init__.pyi b/plexcryptool/__init__.pyi
deleted file mode 100644
index c27ffb4..0000000
--- a/plexcryptool/__init__.pyi
+++ /dev/null
@@ -1,7 +0,0 @@
-"""
-Bindings for the plexcryptool rust library
-
-plexcryptool.plexcryptool is direct access to the shared library, do not use it.
-"""
-from . import binary
-from . import math
diff --git a/pyproject.toml b/pyproject.toml
index e2e253d..ae576bb 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -14,3 +14,4 @@ classifiers = [
 
 [tool.maturin]
 features = ["pyo3/extension-module"]
+python-source = "src-py"
diff --git a/plexcryptool/__init__.py b/src-py/plexcryptool/__init__.py
similarity index 100%
rename from plexcryptool/__init__.py
rename to src-py/plexcryptool/__init__.py
diff --git a/plexcryptool/authur1.py b/src-py/plexcryptool/authur1.py
similarity index 100%
rename from plexcryptool/authur1.py
rename to src-py/plexcryptool/authur1.py
diff --git a/plexcryptool/basic-decrypt.py b/src-py/plexcryptool/basic-decrypt.py
similarity index 100%
rename from plexcryptool/basic-decrypt.py
rename to src-py/plexcryptool/basic-decrypt.py
diff --git a/plexcryptool/binary.pyi b/src-py/plexcryptool/binary.pyi
similarity index 100%
rename from plexcryptool/binary.pyi
rename to src-py/plexcryptool/binary.pyi
diff --git a/plexcryptool/math.pyi b/src-py/plexcryptool/math.pyi
similarity index 100%
rename from plexcryptool/math.pyi
rename to src-py/plexcryptool/math.pyi
diff --git a/plexcryptool/md5-analyzer.py b/src-py/plexcryptool/md5-analyzer.py
similarity index 100%
rename from plexcryptool/md5-analyzer.py
rename to src-py/plexcryptool/md5-analyzer.py
diff --git a/plexcryptool/plexcryptool.pyi b/src-py/plexcryptool/plexcryptool.pyi
similarity index 100%
rename from plexcryptool/plexcryptool.pyi
rename to src-py/plexcryptool/plexcryptool.pyi
diff --git a/plexcryptool/py.typed b/src-py/plexcryptool/py.typed
similarity index 100%
rename from plexcryptool/py.typed
rename to src-py/plexcryptool/py.typed
diff --git a/plexcryptool/trash-hash.py b/src-py/plexcryptool/trash-hash.py
similarity index 100%
rename from plexcryptool/trash-hash.py
rename to src-py/plexcryptool/trash-hash.py
diff --git a/src/cplex/printing.rs b/src/cplex/printing.rs
index 4891cf7..9035a00 100644
--- a/src/cplex/printing.rs
+++ b/src/cplex/printing.rs
@@ -17,6 +17,8 @@ use pyo3::prelude::*;
 use clap::CommandFactory;
 use num::Integer;
 
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// "constant" printing ////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
 #[pyfunction]
@@ -41,6 +43,8 @@ pub fn seperator() {
     println!("{:=<120}", '=');
 }
 
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// result printing ////////////////////////////////////////////////////////////////////////////////
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
 /// process a result with some int
diff --git a/src/lib.rs b/src/lib.rs
index c7d18f6..23dd9cd 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -59,7 +59,7 @@ fn register_math_module(py: Python, parent_module: &PyModule) -> PyResult<()> {
 #[pymodule]
 fn register_algo_module(py: Python, parent_module: &PyModule) -> PyResult<()> {
     let algo_module = PyModule::new(py, "algo")?;
-    let feistel0_module = PyModule::new(py, "algo")?;
+    let feistel0_module = PyModule::new(py, "feistel0")?;
     feistel0_module.add_function(wrap_pyfunction!(algo::feistel0::encrypt, feistel0_module)?)?;
     feistel0_module.add_function(wrap_pyfunction!(algo::feistel0::decrypt, feistel0_module)?)?;
     feistel0_module.add_function(wrap_pyfunction!(algo::feistel0::sbox, feistel0_module)?)?;