Documenting some functions and methods that are difficult to understand.

Atomic/atomic.py

@@ -13,7 +13,12 @@
 from docker.errors import NotFound
 from .discovery import RegistryInspect, RegistryInspectError
 
+
 def find_repo_tag(d, Id, image_name):
+
+    # The image_in_repotags function fetches the name of the image inside the "repotag" repository, and if found,
+    # returns the name of the image, or image list.
+
     def image_in_repotags(image_name, repotags):
         if image_name in repotags:
             return image_name
@@ -118,6 +123,11 @@ def pull(self):
             prevstatus = status
         util.write_out("")
 
+    # If for some reason the NameError or AttributeError class appears in the path, 
+    # the exception is thrown to ignore the "pass" problem. 
+    # The NameError class handles only unqualified names while AtributeError, 
+    # appears when an object does not support attribute references or assignments.
+
     def set_args(self, args):
         self.args = args
         try:
@@ -218,6 +228,10 @@ def _get_args(self, label):
     def quote(self, args):
         return list(map(pipes.quote, args))
 
+    # This function cmd_env adds the atomic project environment variables within a dictionary (key and value),
+    # and reassigns some of its values as image and image name. 
+    # The goal here is to return the argument, with expanded environment variables and return new newenv.
+
     def cmd_env(self):
         newenv = dict(os.environ)
         newenv['NAME'] = self.name or ""