Fix all PEP-008 issues

unit_test/environment_test.py

@@ -1,4 +1,5 @@
 import os
+
 from cibuildwheel.environment import parse_environment
 
 
@@ -13,6 +14,7 @@ def test_basic_parsing():
     assert environment_dict == {'VAR': '1', 'VBR': '2'}
     assert environment_cmds == ['export VAR=1', 'export VBR=2']
 
+
 def test_quotes():
     environment_recipe = parse_environment('A=1 VAR="1 NOT_A_VAR=2" VBR=\'vbr\'')
 
@@ -24,6 +26,7 @@ def test_quotes():
     assert environment_dict == {'A': '1', 'VAR': '1 NOT_A_VAR=2', 'VBR': 'vbr'}
     assert environment_cmds == ['export A=1', 'export VAR="1 NOT_A_VAR=2"', 'export VBR=\'vbr\'']
 
+
 def test_inheritance():
     environment_recipe = parse_environment('PATH=$PATH:/usr/local/bin')
 
@@ -35,6 +38,7 @@ def test_inheritance():
     assert environment_dict == {'PATH': '/usr/bin:/usr/local/bin'}
     assert environment_cmds == ['export PATH=$PATH:/usr/local/bin']
 
+
 def test_shell_eval():
     environment_recipe = parse_environment('VAR="$(echo "a test" string)"')
 
@@ -49,6 +53,7 @@ def test_shell_eval():
     assert environment_dict['VAR'] == 'a test string'
     assert environment_cmds == ['export VAR="$(echo "a test" string)"']
 
+
 def test_shell_eval_and_env():
     environment_recipe = parse_environment('VAR="$(echo "$PREV_VAR" string)"')
 
@@ -60,6 +65,7 @@ def test_shell_eval_and_env():
     assert environment_dict == {'PREV_VAR': '1 2 3', 'VAR': '1 2 3 string'}
     assert environment_cmds == ['export VAR="$(echo "$PREV_VAR" string)"']
 
+
 def test_empty_var():
     environment_recipe = parse_environment('CFLAGS=')
 
@@ -71,6 +77,7 @@ def test_empty_var():
     assert environment_dict == {'CFLAGS': ''}
     assert environment_cmds == ['export CFLAGS=']
 
+
 def test_no_vars():
     environment_recipe = parse_environment('')
 
@@ -80,6 +87,7 @@ def test_no_vars():
     assert environment_dict == {}
     assert environment_cmds == []
 
+
 def test_no_vars_pass_through():
     environment_recipe = parse_environment('')