diff --git a/.github/workflows/python-package.yml b/.github/workflows/python-package.yml
index 4ea5abe..3686c07 100644
--- a/.github/workflows/python-package.yml
+++ b/.github/workflows/python-package.yml
@@ -31,7 +31,7 @@ jobs:
         python -m pip install -r requirements_dev.txt
     - name: Lint with flake8
       run: |
-        flake8 .
+        flake8 src
         # stop the build if there are Python syntax errors or undefined names
         # flake8 . --count --select=E9,F63,F7,F82 --show-source --statistics
         # # exit-zero treats all errors as warnings. The GitHub editor is 127 chars wide
diff --git a/requirements_dev.txt b/requirements_dev.txt
index 47a0e4d..e4fb35c 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -2,3 +2,4 @@ flake8
 mypy
 pytest
 pytest_mock
+black
\ No newline at end of file
diff --git a/setup.cfg b/setup.cfg
index bb26738..9be6e58 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -17,3 +17,10 @@ package_dir =
 	=src
 zip_safe = no
 
+[flake8]
+extend-ignore = E402
+max-line-length = 128
+per-file-ignores =
+    # imported but unused
+    __init__.py: F401
+
diff --git a/src/drift_chamber/__init__.py b/src/drift_chamber/__init__.py
index faaea64..26f2f6b 100644
--- a/src/drift_chamber/__init__.py
+++ b/src/drift_chamber/__init__.py
@@ -1,3 +1,3 @@
+from .driftchamber import DriftChamber
 from .muon import Muon
 from .widget import Widget
-from .driftchamber import DriftChamber
diff --git a/src/drift_chamber/__main__.py b/src/drift_chamber/__main__.py
new file mode 100644
index 0000000..9702253
--- /dev/null
+++ b/src/drift_chamber/__main__.py
@@ -0,0 +1 @@
+print("Executing as a module!")
diff --git a/src/drift_chamber/driftchamber.py b/src/drift_chamber/driftchamber.py
index 9d60f18..37fbf5f 100644
--- a/src/drift_chamber/driftchamber.py
+++ b/src/drift_chamber/driftchamber.py
@@ -1,15 +1,17 @@
-import numpy as np
-from scipy import stats, sparse
-import math
 import copy
+import math
+
 import matplotlib
 
 matplotlib.use("TkAgg")
-import matplotlib.pyplot as plt
 import matplotlib.animation as animation
-from matplotlib.colors import LogNorm
 import matplotlib.cm
-from .muon import Muon, MissedDetector
+import matplotlib.pyplot as plt
+import numpy as np
+from matplotlib.colors import LogNorm
+from scipy import sparse, stats
+
+from .muon import Muon
 
 
 class DriftChamber:
@@ -44,7 +46,7 @@ def __init__(
         Takes positive numerical spacing, numerical E (electric field), positive numerical D (diffusivity)
         and positive numerical tau (timestep) as optional kwargs.
         Also takes mat kwarg, True by default, this should be set to False if need to avoid constructing matrix
-        (e.g for investigating small spacings in the initial ionisation track that would otherwise generate very large matricies).
+        (e.g for small spacings in the initial ionisation track that would otherwise generate very large matricies).
         """
         self.grid: np.ndarray = np.zeros((int(30 / spacing), (int(50 / spacing))))
         self.spacing = spacing
@@ -73,7 +75,7 @@ def __init__(
 
     def __str__(self) -> str:
         """String representation of DriftChamber object for ease of debugging"""
-        return f"""Drift Chamber object, grid spacing of {self.spacing}cm, 
+        return f"""Drift Chamber object, grid spacing of {self.spacing}cm,
         diffusivity of {self.D}, E-field of {self.E}."""
 
     def initial_ion(self, muon: Muon) -> None:
diff --git a/src/drift_chamber/muon.py b/src/drift_chamber/muon.py
index b0995ba..949a118 100644
--- a/src/drift_chamber/muon.py
+++ b/src/drift_chamber/muon.py
@@ -9,9 +9,9 @@ class Muon:
     zen: Zenith angle, random value distributed proportional to cos^2 between 3pi/2 and pi/2
     energy: Random log-normal value in GeV of mean 6.55 and stdev 1.8
     charge: Randomly generated charge of muon takes values +1 (with probability 0.53) and -1 (with probability 0.47)
-    x_coord: x coordinate of muon on plane in cm (direction into the page in relation to diagram above)
-    y_coord: y coordinate of muon on plane in cm (horizontal direction in relation to diagram above)
-    height: height of plane above detector in cm (vertical direction in relation to diagram above). Must be >= 30 (height of detector)
+    x_coord: x coordinate of muon on plane in cm (direction into the page wrt diagram above)
+    y_coord: y coordinate of muon on plane in cm (horizontal direction wrt diagram)
+    height: height of plane above detector in cm (vertical direction wrt diagram). Must be >= 30 (height of detector)
     """
 
     POSITIVE_CHARGE_PROBABILITY = 0.53
@@ -39,7 +39,12 @@ def __repr__(self) -> str:
         String representation of Muon object for ease of debugging and for use in MissedDetector exception
         """
 
-        return f"Muon: energy: {self.energy:.0f} GeV, charge: {self.charge}e, zenith: {self.zen:.3f}, azimuthal: {self.azi:.3f}, x: {self.x_coord:.3f}, y: {self.y_coord:.3f}"
+        return (f"Muon: energy: {self.energy:.0f} GeV,"
+                "charge: {self.charge}e,"
+                "zenith: {self.zen:.3f},"
+                "azimuthal: {self.azi:.3f},"
+                "x: {self.x_coord:.3f},"
+                "y: {self.y_coord:.3f}")
 
     def starting_coords(self) -> tuple[float, float]:
         """
diff --git a/src/drift_chamber/widget.py b/src/drift_chamber/widget.py
index c9380f2..446abb6 100644
--- a/src/drift_chamber/widget.py
+++ b/src/drift_chamber/widget.py
@@ -1,16 +1,19 @@
 import tkinter as tk
 from tkinter import ttk
+
 import matplotlib
 
 matplotlib.use("TkAgg")
-from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
+import copy
+
 import matplotlib.animation as animation
-from matplotlib.colors import LogNorm
 import matplotlib.cm
+from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
+from matplotlib.colors import LogNorm
 from matplotlib.figure import Figure
-import copy
-from .muon import Muon, MissedDetector
+
 from .driftchamber import DriftChamber
+from .muon import MissedDetector, Muon
 
 
 class Widget:
diff --git a/tests/test_muon.py b/tests/test_muon.py
index 43a60c7..a89625b 100644
--- a/tests/test_muon.py
+++ b/tests/test_muon.py
@@ -1,5 +1,6 @@
 import sys
 from unittest.mock import MagicMock
+
 sys.modules["drift_chamber.widget"] = MagicMock()
 
 import numpy as np
@@ -26,7 +27,7 @@ def test_init(mocker):
         r,
         azi / (2 * np.pi),
         x_coord,
-        y_coord
+        y_coord,
     ]
     muon = Muon()
     mock_log_normal.assert_called_once_with(6.55, 1.8)
@@ -35,5 +36,5 @@ def test_init(mocker):
     assert muon.energy == mock_log_normal.return_value
     assert muon.zen == zen
     assert muon.azi == azi
-    assert muon.x_coord == x_coord * 100 - 50 
+    assert muon.x_coord == x_coord * 100 - 50
     assert muon.y_coord == y_coord * 80 - 15