diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..3d4575f
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+
+result*
+.direnv
diff --git a/flake.nix b/flake.nix
index 1d96fbe..cf65e5a 100644
--- a/flake.nix
+++ b/flake.nix
@@ -15,6 +15,6 @@
         dirs = pkgs.lib.filterAttrs (_: v: v == "directory") currentDir;
       in {
         packages = builtins.mapAttrs (dir: _: pkgs.callPackage ./${dir} {}) dirs;
-      }
-    );
+        devShells = builtins.mapAttrs (dir: _: pkgs.callPackage ./${dir}/shell.nix {}) dirs;
+      });
 }
diff --git a/python/.envrc b/python/.envrc
new file mode 100644
index 0000000..e4c941b
--- /dev/null
+++ b/python/.envrc
@@ -0,0 +1,3 @@
+#!/usr/bin/env bash
+
+use flake ..#python
diff --git a/python/bin/soe b/python/bin/soe
new file mode 100644
index 0000000..9ef8dcc
--- /dev/null
+++ b/python/bin/soe
@@ -0,0 +1,4 @@
+#!/usr/bin/env python
+
+import soe
+soe.main()
diff --git a/python/default.nix b/python/default.nix
new file mode 100644
index 0000000..daa861d
--- /dev/null
+++ b/python/default.nix
@@ -0,0 +1,11 @@
+{ python3, ... }:
+
+python3.pkgs.buildPythonApplication {
+  pname = "soe-python";
+  version = "1.0";
+  src = ./.;
+
+  doCheck = false;
+
+  meta.mainProgram = "soe";
+}
diff --git a/python/setup.py b/python/setup.py
new file mode 100644
index 0000000..158092b
--- /dev/null
+++ b/python/setup.py
@@ -0,0 +1,7 @@
+from setuptools import setup
+
+setup(
+    name="soe",
+    version="1.0.0",
+    scripts=["bin/soe"]
+)
diff --git a/python/shell.nix b/python/shell.nix
new file mode 100644
index 0000000..5feafb5
--- /dev/null
+++ b/python/shell.nix
@@ -0,0 +1,2 @@
+{ python3, ... }:
+python3.buildEnv.env
diff --git a/python/soe/__init__.py b/python/soe/__init__.py
new file mode 100644
index 0000000..15b6a64
--- /dev/null
+++ b/python/soe/__init__.py
@@ -0,0 +1 @@
+from .main import *
diff --git a/python/soe/main.py b/python/soe/main.py
new file mode 100644
index 0000000..23f1cf2
--- /dev/null
+++ b/python/soe/main.py
@@ -0,0 +1,26 @@
+
+
+def sieve_of_eratosthenes(n):
+    nums = list(range(2, n))
+    while nums:
+        prime = nums[0]
+        nums = [i for i in nums if i % prime]
+        yield prime
+
+def main():
+    num = 0
+    another = True
+    while another:
+        try:
+            num = int(input())
+            another = False
+        except ValueError:
+            pass
+
+    print()
+    for i in sieve_of_eratosthenes(num):
+        print(i)
+
+
+if __name__ == "__main__":
+    main()