CircleCI: Adds pylint test for all python files in test/ directory.

scripts/pylint_all.py

@@ -0,0 +1,56 @@
+#! /usr/bin/env python3
+
+"""
+Performs pylint on all python files in the project repo's test directory recursively.
+
+This script is meant to be run from the CI but can also be easily in local dev environment,
+where you can optionally pass `-d` as command line argument to let this script abort on first error.
+"""
+
+from os import path, walk, system
+from sys import argv, exit as brexit
+
+PROJECT_ROOT = path.dirname(path.realpath(__file__))
+PYLINT_RCFILE = "{}/pylintrc".format(PROJECT_ROOT)
+
+SGR_INFO = "\033[1;32m"
+SGR_CLEAR = "\033[0m"
+
+def pylint_all_filenames(dev_mode, rootdirs):
+    """ Performs pylint on all python files within given root directory (recursively).  """
+    filenames = []
+    for rootdir in rootdirs:
+        for rootpath, _, filenames_w in walk(rootdir):
+            for filename in filenames_w:
+                if filename.endswith('.py'):
+                    filenames.append(path.join(rootpath, filename))
+
+    checked_count = 0
+    failed = []
+    for filename in filenames:
+        checked_count += 1
+        cmdline = "pylint --rcfile=\"{}\" \"{}\"".format(PYLINT_RCFILE, filename)
+        print("{}[{}/{}] Running pylint on file: {}{}".format(SGR_INFO, checked_count, len(filenames),
+                                                              filename, SGR_CLEAR))
+        exit_code = system(cmdline)
+        if exit_code != 0:
+            if dev_mode:
+                return 1, checked_count
+            else:
+                failed.append(filename)
+
+    return len(failed), len(filenames)
+
+def main():
+    """" Collects all python script root dirs and runs pylint on them. """
+    dev_mode = len(argv) == 2 and argv[1] == "-d"
+    failed_count, total_count = pylint_all_filenames(dev_mode, [
+        path.abspath(path.dirname(__file__) + "/../scripts"),
+        path.abspath(path.dirname(__file__) + "/../test")])
+    if failed_count != 0:
+        brexit("pylint failed on {}/{} files.".format(failed_count, total_count))
+    else:
+        print("Successfully tested {} files.".format(total_count))
+
+if __name__ == "__main__":
+    main()