Fix typos

test/functional/test_framework/messages.py

@@ -4,7 +4,7 @@
 # Copyright (c) 2010-2017 The Bitcoin Core developers
 # Distributed under the MIT software license, see the accompanying
 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
-"""Bitcoin test framework primitive and message strcutures
+"""Bitcoin test framework primitive and message structures
 
 CBlock, CTransaction, CBlockHeader, CTxIn, CTxOut, etc....:
     data structures that should map to corresponding structures in

test/functional/test_framework/mininode.py

@@ -405,7 +405,7 @@ class P2PInterface(P2PConnection):
 
 
 # Keep our own socket map for asyncore, so that we can track disconnects
-# ourselves (to workaround an issue with closing an asyncore socket when
+# ourselves (to work around an issue with closing an asyncore socket when
 # using select)
 mininode_socket_map = dict()
 
@@ -424,7 +424,7 @@ class NetworkThread(threading.Thread):
     def run(self):
         while mininode_socket_map:
             # We check for whether to disconnect outside of the asyncore
-            # loop to workaround the behavior of asyncore when using
+            # loop to work around the behavior of asyncore when using
             # select
             disconnected = []
             for fd, obj in mininode_socket_map.items():

test/functional/test_framework/test_framework.py

@@ -335,7 +335,7 @@ class BitcoinTestFramework():
         blockchain.  If the cached version of the blockchain is used without
         mocktime then the mempools will not sync due to IBD.
 
-        For backwared compatibility of the python scripts with previous
+        For backward compatibility of the python scripts with previous
         versions of the cache, this helper function sets mocktime to Jan 1,
         2014 + (201 * 10 * 60)"""
         self.mocktime = 1388534400 + (201 * 10 * 60)

test/functional/test_framework/test_node.py

@@ -61,7 +61,7 @@ class TestNode():
         if extra_conf != None:
             append_config(dirname, i, extra_conf)
         # Most callers will just need to add extra args to the standard list below.
-        # For those callers that need more flexibity, they can just set the args property directly.
+        # For those callers that need more flexibility, they can just set the args property directly.
         # Note that common args are set in the config file (see initialize_datadir)
         self.extra_args = extra_args
         self.args = [self.binary, "-datadir=" + self.datadir, "-logtimemicros", "-debug", "-debugexclude=libevent", "-debugexclude=leveldb", "-mocktime=" + str(mocktime), "-uacomment=testnode%d" % i]