--- a/src/pyams_utils/progress.py	Mon Jun 19 15:08:50 2017 +0200
+++ b/src/pyams_utils/progress.py	Mon Jun 19 15:38:44 2017 +0200
@@ -69,7 +69,15 @@
 
 @locked(name=PROGRESS_LOCK_NAME)
 def init_progress_status(progress_id, owner, label, tags=None, length=None, current=None):
-    """Initialize progress status for given task ID"""
+    """Initialize progress status for given task
+
+    :param str progress_id: task ID
+    :param str owner: user ID associated with this task
+    :param str label: label associated with this task
+    :param tags: list of tags associated with given task
+    :param int length: whole length of the given task, if available
+    :param int current: current position in the whole task length, if available
+    """
     status = {'status': 'running',
               'owner': owner,
               'label': label,
@@ -107,7 +115,14 @@
 
 @locked(name=PROGRESS_LOCK_NAME)
 def set_progress_status(progress_id, status='running', message=None, length=None, current=None):
-    """Set status of given task"""
+    """Set status of given task
+
+    :param str progress_id: task ID
+    :param str status: new status of the given task
+    :param str message: status message associated with the given task
+    :param int length: whole length of the given task, if available
+    :param int current: current position in the whole task length, if available
+    """
     progress_cache = get_progress_cache()
     cache_key = PROGRESS_TASK_KEY.format(progress_id)
     try: