diff --git a/test/test_cli.py b/test/test_cli.py
index 331eff6..03beb2d 100644
--- a/test/test_cli.py
+++ b/test/test_cli.py
@@ -28,6 +28,7 @@ printer:
     testfile=DEVFILE,
 )
 
+
 class TestCLI:
     """ Contains setups, teardowns, and tests for CLI
     """
diff --git a/test/test_function_text.py b/test/test_function_text.py
index 2ad7bd1..b0b1ca1 100644
--- a/test/test_function_text.py
+++ b/test/test_function_text.py
@@ -21,6 +21,7 @@ import filecmp
 
 devfile = 'testfile'
 
+
 def setup_testfile():
     """create a testfile as devfile"""
     fhandle = open(devfile, 'a')
@@ -29,10 +30,12 @@ def setup_testfile():
     finally:
         fhandle.close()
 
+
 def teardown_testfile():
     """destroy testfile again"""
     os.remove(devfile)
 
+
 @with_setup(setup_testfile, teardown_testfile)
 def test_function_text_dies_ist_ein_test_lf():
     """test the text printing function with simple string and compare output"""
diff --git a/test/test_load_module.py b/test/test_load_module.py
index 0cfcce9..daf94b4 100644
--- a/test/test_load_module.py
+++ b/test/test_load_module.py
@@ -19,6 +19,7 @@ import os
 
 devfile = 'testfile'
 
+
 def setup_testfile():
     """create a testfile as devfile"""
     fhandle = open(devfile, 'a')
@@ -27,10 +28,12 @@ def setup_testfile():
     finally:
         fhandle.close()
 
+
 def teardown_testfile():
     """destroy testfile again"""
     os.remove(devfile)
 
+
 @with_setup(setup_testfile, teardown_testfile)
 def test_instantiation():
     """test the instantiation of a escpos-printer class and basic printing"""