Silence pylint

Silence pylint in specific places where we're doing slightly unusual
or dodgy, but correct.
diff --git a/tests/scripts/generate_test_code.py b/tests/scripts/generate_test_code.py
index 1258024..1fff099 100755
--- a/tests/scripts/generate_test_code.py
+++ b/tests/scripts/generate_test_code.py
@@ -238,7 +238,7 @@
         if hasattr(parent, '__next__'):
             line = parent.__next__()  # Python 3
         else:
-            line = parent.next()  # Python 2
+            line = parent.next()  # Python 2 # pylint: disable=no-member
         if line is not None:
             self._line_no += 1
             # Convert byte array to string with correct encoding and
diff --git a/tests/scripts/mbedtls_test.py b/tests/scripts/mbedtls_test.py
index c702765..ac2912d 100755
--- a/tests/scripts/mbedtls_test.py
+++ b/tests/scripts/mbedtls_test.py
@@ -37,7 +37,8 @@
 import re
 import os
 import binascii
-from mbed_host_tests import BaseHostTest, event_callback
+
+from mbed_host_tests import BaseHostTest, event_callback # pylint: disable=import-error
 
 
 class TestDataParserError(Exception):
diff --git a/tests/scripts/test_generate_test_code.py b/tests/scripts/test_generate_test_code.py
index 2ef12e1..6d7113e 100755
--- a/tests/scripts/test_generate_test_code.py
+++ b/tests/scripts/test_generate_test_code.py
@@ -22,7 +22,7 @@
 Unit tests for generate_test_code.py
 """
 
-
+# pylint: disable=wrong-import-order
 try:
     # Python 2
     from StringIO import StringIO
@@ -36,6 +36,7 @@
 except ImportError:
     # Python 3
     from unittest.mock import patch
+# pylint: enable=wrong-import-order
 from generate_test_code import gen_dependencies, gen_dependencies_one_line
 from generate_test_code import gen_function_wrapper, gen_dispatch
 from generate_test_code import parse_until_pattern, GeneratorInputError
@@ -336,6 +337,7 @@
         :param length:
         :return:
         """
+        # pylint: disable=unused-argument
         line = super(StringIOWrapper, self).readline()
         if line is not None:
             self.line_no += 1