work on onboarding and pep8 compliance. re-worded about

src/communicatorutils/downloadblocks/__init__.py

@@ -3,6 +3,20 @@
 
     Download blocks using the communicator instance
 '''
+import onionrexceptions
+import logger
+import onionrpeers
+import communicator
+from communicator import peeraction
+from communicator import onlinepeers
+from onionrutils import blockmetadata
+from onionrutils import validatemetadata
+from coredb import blockmetadb
+import onionrcrypto
+import onionrstorage
+from onionrblocks import onionrblacklist
+from onionrblocks import storagecounter
+from . import shoulddownload
 '''
     This program is free software: you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -17,17 +31,10 @@
     You should have received a copy of the GNU General Public License
     along with this program.  If not, see <https://www.gnu.org/licenses/>.
 '''
-import communicator, onionrexceptions
-import logger, onionrpeers
-from onionrutils import blockmetadata, stringvalidators, validatemetadata
-from coredb import blockmetadb
-from . import shoulddownload
-from communicator import peeraction, onlinepeers
-import onionrcrypto, onionrstorage
-from onionrblocks import onionrblacklist, storagecounter
-def download_blocks_from_communicator(comm_inst):
-    '''Use Onionr communicator instance to download blocks in the communicator's queue'''
-    assert isinstance(comm_inst, communicator.OnionrCommunicatorDaemon)
+
+
+def download_blocks_from_communicator(comm_inst: "OnionrCommunicatorDaemon"):
+    '''Use communicator instance to download blocks in the comms's queue'''
     blacklist = onionrblacklist.OnionrBlackList()
     storage_counter = storagecounter.StorageCounter()
     LOG_SKIP_COUNT = 50 # for how many iterations we skip logging the counter
@@ -53,7 +60,6 @@ def download_blocks_from_communicator(comm_inst):
             break
         # Do not download blocks being downloaded
         if blockHash in comm_inst.currentDownloading:
-            #logger.debug('Already downloading block %s...' % blockHash)
             continue
 
         comm_inst.currentDownloading.append(blockHash) # So we can avoid concurrent downloading in other threads of same block
@@ -130,4 +136,4 @@ def download_blocks_from_communicator(comm_inst):
                 except KeyError:
                     pass
         comm_inst.currentDownloading.remove(blockHash)
-    comm_inst.decrementThreadCount('getBlocks')
+    comm_inst.decrementThreadCount('getBlocks')