Code formatting cleanups.

tests/test_input_cmd_funcs.py

@@ -5,6 +5,7 @@ import unittest
 from contextlib import contextmanager
 from io import StringIO
 
+
 @contextmanager
 def captured_output():
     new_out, new_err = StringIO(), StringIO()
@@ -19,6 +20,7 @@ def captured_output():
 
 from gprMax.input_cmd_funcs import *
 
+
 class My_input_cmd_funcs_test(unittest.TestCase):
     def assert_output(self, out, expected_out):
         """helper function"""
@@ -29,29 +31,36 @@ class My_input_cmd_funcs_test(unittest.TestCase):
         with captured_output() as (out, err):
             rx(0, 0, 0)
         self.assert_output(out, '#rx: 0 0 0')
+
     def test_rx2(self):
         with captured_output() as (out, err):
             rx(0, 1, 2, 'id')
         self.assert_output(out, '#rx: 0 1 2 id')
+
     def test_rx3(self):
         with captured_output() as (out, err):
             rx(2, 1, 0, 'idd', ['Ex'])
         self.assert_output(out, '#rx: 2 1 0 idd Ex')
+
     def test_rx4(self):
         with captured_output() as (out, err):
             rx(2, 1, 0, 'id', ['Ex', 'Ez'])
         self.assert_output(out, '#rx: 2 1 0 id Ex Ez')
+
     def test_rx4(self):
         with captured_output() as (out, err):
             rx(2, 1, 0, 'id', ['Ex', 'Ez'])
         self.assert_output(out, '#rx: 2 1 0 id Ex Ez')
+
     def test_rx_rotate_exception(self):
         with self.assertRaises(ValueError):
             rx(2, 1, 0, 'id', ['Ex', 'Ez'], polarisation='x', rotate90origin=(1, 1))  # no dxdy given
+
     def test_rx_rotate_success(self):
         with captured_output() as (out, err):
             rx(2, 1, 0, 'id', ['Ex', 'Ez'], polarisation='x', rotate90origin=(1, 1), dxdy=(0, 0))
         self.assert_output(out, '#rx: 1 2 0 id Ex Ez')  # note: x, y swapped
+
     def test_rx_rotate_success2(self):
         with captured_output() as (out, err):
             rx(2, 1, 0, 'id', ['Ex', 'Ez'], polarisation='y', rotate90origin=(1, 1), dxdy=(0, 0))
@@ -61,6 +70,7 @@ class My_input_cmd_funcs_test(unittest.TestCase):
         with captured_output() as (out, err):
             src_steps()
         self.assert_output(out, '#src_steps: 0 0 0')
+
     def test_src_steps2(self):
         with captured_output() as (out, err):
             src_steps(42, 43, 44.2)
@@ -70,6 +80,7 @@ class My_input_cmd_funcs_test(unittest.TestCase):
         with captured_output() as (out, err):
             rx_steps()
         self.assert_output(out, '#rx_steps: 0 0 0')
+
     def test_rx_steps2(self):
         with captured_output() as (out, err):
             rx_steps(42, 43, 44.2)