Add a pytype configuration file

Author: arichardson

pytype.cfg

@@ -0,0 +1,31 @@
+[pytype]
+# Space-separated list of files or directories to exclude.
+exclude =
+    **/*_test.py
+    **/test_*.py
+    3rdparty
+
+# Space-separated list of files or directories to process.
+inputs =
+    pycheribuild
+
+# Keep going past errors to analyze as many files as possible.
+keep_going = True
+
+# All pytype output goes here.
+output = .pytype
+
+# Platform (e.g., "linux", "win32") that the target code runs on.
+platform = linux
+
+# Paths to source code directories, separated by ':'.
+pythonpath =
+    .:3rdparty/pexpect:3rdparty/ptyprocess
+
+# Comma or space separated list of error names to ignore.
+# TODO: enable attribute-error once I've figured out a solution for setup_config_options()
+disable =
+    annotation-type-mismatch
+    attribute-error
+
+report_errors = True