Add cleanup script

cleanup.py

@@ -0,0 +1,86 @@
+from __future__ import print_function
+
+import subprocess
+import sys
+
+
+def git_clean(remove_directories=False, force=False, dry_run=False, interactive=False, quiet=False, exclude=None,
+              ignore_rules=False, clean_ignored=False, paths=None):
+    """Execute git clean commands."""
+    command = ['git', 'clean']
+    if remove_directories:
+        command.append('-d')
+    if force:
+        command.append('--force')
+    if interactive:
+        command.append('--interactive')
+    if quiet:
+        command.append('--quiet')
+    if dry_run:
+        command.append('--dry-run')
+    if exclude:
+        try:
+            exclude = exclude.split(' ')
+        except AttributeError:
+            pass
+        for exclusion in exclude:
+            command.append('--exclude={pattern}'.format(pattern=exclusion))
+    if ignore_rules:
+        command.append('-x')
+    if clean_ignored:
+        command.append('-X')
+    if paths:
+        try:
+            paths = paths.split(' ')
+        except AttributeError:
+            pass
+        command.extend(paths)
+    return subprocess.check_output(command)
+
+
+def clean_bytecode():
+    """Clean bytecode files."""
+    try:
+        result = git_clean(
+            remove_directories=True,
+            force=True,
+            exclude=[
+                '*.*',  # exclude everything
+                '!*.py[co]',  # except bytecode
+                '!**/__pycache__/',  # and __pycache__ folders
+            ],
+        )
+    except subprocess.CalledProcessError as error:
+        sys.exit(error.returncode)
+    else:
+        return result
+
+
+def clean_folders(*paths):
+    """Clean obsolete folders."""
+    try:
+        result = git_clean(
+            remove_directories=True,
+            force=True,
+            ignore_rules=True,
+            paths=paths,
+        )
+    except subprocess.CalledProcessError as error:
+        sys.exit(error.returncode)
+    else:
+        return result
+
+
+def clean(*paths):
+    """Clean up bytecode and obsolete folders."""
+    print('-- Cleaning bytecode --')
+    result = clean_bytecode()
+    print(result or 'No bytecode to clean\n')
+    if paths:
+        print('-- Cleaning folders: {} --'.format(paths))
+        result = clean_folders(*paths)
+        print(result or 'No folders to clean\n')
+
+
+if __name__ == '__main__':
+    clean('libs', 'core')