Pylint: minor code simplifications

Simplify the code in minor ways. Each of this changes fixes a warning
from Pylint 2.4 that doesn't appear with Pylint 1.7.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>

tests/scripts/generate_test_code.py

diff --git a/tests/scripts/generate_test_code.py b/tests/scripts/generate_test_code.py
index c0f99f7..21f816e 100755
--- a/tests/scripts/generate_test_code.py
+++ b/tests/scripts/generate_test_code.py
@@ -402,8 +402,7 @@
     :param inp_str: Input string with macros delimited by ':'.
     :return: list of dependencies
     """
-    dependencies = [dep for dep in map(validate_dependency,
-                                       inp_str.split(':'))]
+    dependencies = list(map(validate_dependency, inp_str.split(':')))
     return dependencies
 
 

tests/scripts/mbedtls_test.py

diff --git a/tests/scripts/mbedtls_test.py b/tests/scripts/mbedtls_test.py
index 9a58a36..709bb1a 100755
--- a/tests/scripts/mbedtls_test.py
+++ b/tests/scripts/mbedtls_test.py
@@ -262,7 +262,7 @@
             data_bytes += bytearray(dependencies)
         data_bytes += bytearray([function_id, len(parameters)])
         for typ, param in parameters:
-            if typ == 'int' or typ == 'exp':
+            if typ in ('int', 'exp'):
                 i = int(param, 0)
                 data_bytes += b'I' if typ == 'int' else b'E'
                 self.align_32bit(data_bytes)

tests/scripts/test_generate_test_code.py

diff --git a/tests/scripts/test_generate_test_code.py b/tests/scripts/test_generate_test_code.py
index e39b29b..c8e8c5c 100755
--- a/tests/scripts/test_generate_test_code.py
+++ b/tests/scripts/test_generate_test_code.py
@@ -1127,9 +1127,8 @@
 dhm_selftest:
 """
         stream = StringIOWrapper('test_suite_ut.function', data)
-        tests = [(name, test_function, dependencies, args)
-                 for name, test_function, dependencies, args in
-                 parse_test_data(stream)]
+        # List of (name, function_name, dependencies, args)
+        tests = list(parse_test_data(stream))
         test1, test2, test3, test4 = tests
         self.assertEqual(test1[0], 'Diffie-Hellman full exchange #1')
         self.assertEqual(test1[1], 'dhm_do_dhm')
@@ -1170,9 +1169,8 @@
 
 """
         stream = StringIOWrapper('test_suite_ut.function', data)
-        tests = [(name, function_name, dependencies, args)
-                 for name, function_name, dependencies, args in
-                 parse_test_data(stream)]
+        # List of (name, function_name, dependencies, args)
+        tests = list(parse_test_data(stream))
         test1, test2 = tests
         self.assertEqual(test1[0], 'Diffie-Hellman full exchange #1')
         self.assertEqual(test1[1], 'dhm_do_dhm')

tests/scripts/test_psa_constant_names.py

diff --git a/tests/scripts/test_psa_constant_names.py b/tests/scripts/test_psa_constant_names.py
index c02555e..2c9f058 100755
--- a/tests/scripts/test_psa_constant_names.py
+++ b/tests/scripts/test_psa_constant_names.py
@@ -453,7 +453,7 @@
     tests.run_all(inputs)
     tests.report(sys.stdout)
     if tests.errors:
-        exit(1)
+        sys.exit(1)
 
 if __name__ == '__main__':
     main()