Enable W191 and W291 flake8 checks.

Remove trailing whitespace from Python files.
Convert tabs to spaces.

1 files changed, 124 insertions, 124 deletions

diff --git a/contrib/linearize/linearize-hashes.py b/contrib/linearize/linearize-hashes.py
index e1304e26d0..8e1266ae0b 100755
--- a/contrib/linearize/linearize-hashes.py
+++ b/contrib/linearize/linearize-hashes.py
@@ -22,135 +22,135 @@ import os.path
 settings = {}
 
 def hex_switchEndian(s):
-	""" Switches the endianness of a hex string (in pairs of hex chars) """
-	pairList = [s[i:i+2].encode() for i in range(0, len(s), 2)]
-	return b''.join(pairList[::-1]).decode()
+    """ Switches the endianness of a hex string (in pairs of hex chars) """
+    pairList = [s[i:i+2].encode() for i in range(0, len(s), 2)]
+    return b''.join(pairList[::-1]).decode()
 
 class BitcoinRPC:
-	def __init__(self, host, port, username, password):
-		authpair = "%s:%s" % (username, password)
-		authpair = authpair.encode('utf-8')
-		self.authhdr = b"Basic " + base64.b64encode(authpair)
-		self.conn = httplib.HTTPConnection(host, port=port, timeout=30)
-
-	def execute(self, obj):
-		try:
-			self.conn.request('POST', '/', json.dumps(obj),
-				{ 'Authorization' : self.authhdr,
-				  'Content-type' : 'application/json' })
-		except ConnectionRefusedError:
-			print('RPC connection refused. Check RPC settings and the server status.',
-			      file=sys.stderr)
-			return None
-
-		resp = self.conn.getresponse()
-		if resp is None:
-			print("JSON-RPC: no response", file=sys.stderr)
-			return None
-
-		body = resp.read().decode('utf-8')
-		resp_obj = json.loads(body)
-		return resp_obj
-
-	@staticmethod
-	def build_request(idx, method, params):
-		obj = { 'version' : '1.1',
-			'method' : method,
-			'id' : idx }
-		if params is None:
-			obj['params'] = []
-		else:
-			obj['params'] = params
-		return obj
-
-	@staticmethod
-	def response_is_error(resp_obj):
-		return 'error' in resp_obj and resp_obj['error'] is not None
+    def __init__(self, host, port, username, password):
+        authpair = "%s:%s" % (username, password)
+        authpair = authpair.encode('utf-8')
+        self.authhdr = b"Basic " + base64.b64encode(authpair)
+        self.conn = httplib.HTTPConnection(host, port=port, timeout=30)
+
+    def execute(self, obj):
+        try:
+            self.conn.request('POST', '/', json.dumps(obj),
+                { 'Authorization' : self.authhdr,
+                  'Content-type' : 'application/json' })
+        except ConnectionRefusedError:
+            print('RPC connection refused. Check RPC settings and the server status.',
+                  file=sys.stderr)
+            return None
+
+        resp = self.conn.getresponse()
+        if resp is None:
+            print("JSON-RPC: no response", file=sys.stderr)
+            return None
+
+        body = resp.read().decode('utf-8')
+        resp_obj = json.loads(body)
+        return resp_obj
+
+    @staticmethod
+    def build_request(idx, method, params):
+        obj = { 'version' : '1.1',
+            'method' : method,
+            'id' : idx }
+        if params is None:
+            obj['params'] = []
+        else:
+            obj['params'] = params
+        return obj
+
+    @staticmethod
+    def response_is_error(resp_obj):
+        return 'error' in resp_obj and resp_obj['error'] is not None
 
 def get_block_hashes(settings, max_blocks_per_call=10000):
-	rpc = BitcoinRPC(settings['host'], settings['port'],
-			 settings['rpcuser'], settings['rpcpassword'])
-
-	height = settings['min_height']
-	while height < settings['max_height']+1:
-		num_blocks = min(settings['max_height']+1-height, max_blocks_per_call)
-		batch = []
-		for x in range(num_blocks):
-			batch.append(rpc.build_request(x, 'getblockhash', [height + x]))
-
-		reply = rpc.execute(batch)
-		if reply is None:
-			print('Cannot continue. Program will halt.')
-			return None
-
-		for x,resp_obj in enumerate(reply):
-			if rpc.response_is_error(resp_obj):
-				print('JSON-RPC: error at height', height+x, ': ', resp_obj['error'], file=sys.stderr)
-				sys.exit(1)
-			assert(resp_obj['id'] == x) # assume replies are in-sequence
-			if settings['rev_hash_bytes'] == 'true':
-				resp_obj['result'] = hex_switchEndian(resp_obj['result'])
-			print(resp_obj['result'])
-
-		height += num_blocks
+    rpc = BitcoinRPC(settings['host'], settings['port'],
+             settings['rpcuser'], settings['rpcpassword'])
+
+    height = settings['min_height']
+    while height < settings['max_height']+1:
+        num_blocks = min(settings['max_height']+1-height, max_blocks_per_call)
+        batch = []
+        for x in range(num_blocks):
+            batch.append(rpc.build_request(x, 'getblockhash', [height + x]))
+
+        reply = rpc.execute(batch)
+        if reply is None:
+            print('Cannot continue. Program will halt.')
+            return None
+
+        for x,resp_obj in enumerate(reply):
+            if rpc.response_is_error(resp_obj):
+                print('JSON-RPC: error at height', height+x, ': ', resp_obj['error'], file=sys.stderr)
+                sys.exit(1)
+            assert(resp_obj['id'] == x) # assume replies are in-sequence
+            if settings['rev_hash_bytes'] == 'true':
+                resp_obj['result'] = hex_switchEndian(resp_obj['result'])
+            print(resp_obj['result'])
+
+        height += num_blocks
 
 def get_rpc_cookie():
-	# Open the cookie file
-	with open(os.path.join(os.path.expanduser(settings['datadir']), '.cookie'), 'r') as f:
-		combined = f.readline()
-		combined_split = combined.split(":")
-		settings['rpcuser'] = combined_split[0]
-		settings['rpcpassword'] = combined_split[1]
+    # Open the cookie file
+    with open(os.path.join(os.path.expanduser(settings['datadir']), '.cookie'), 'r') as f:
+        combined = f.readline()
+        combined_split = combined.split(":")
+        settings['rpcuser'] = combined_split[0]
+        settings['rpcpassword'] = combined_split[1]
 
 if __name__ == '__main__':
-	if len(sys.argv) != 2:
-		print("Usage: linearize-hashes.py CONFIG-FILE")
-		sys.exit(1)
-
-	f = open(sys.argv[1])
-	for line in f:
-		# skip comment lines
-		m = re.search('^\s*#', line)
-		if m:
-			continue
-
-		# parse key=value lines
-		m = re.search('^(\w+)\s*=\s*(\S.*)$', line)
-		if m is None:
-			continue
-		settings[m.group(1)] = m.group(2)
-	f.close()
-
-	if 'host' not in settings:
-		settings['host'] = '127.0.0.1'
-	if 'port' not in settings:
-		settings['port'] = 8332
-	if 'min_height' not in settings:
-		settings['min_height'] = 0
-	if 'max_height' not in settings:
-		settings['max_height'] = 313000
-	if 'rev_hash_bytes' not in settings:
-		settings['rev_hash_bytes'] = 'false'
-
-	use_userpass = True
-	use_datadir = False
-	if 'rpcuser' not in settings or 'rpcpassword' not in settings:
-		use_userpass = False
-	if 'datadir' in settings and not use_userpass:
-		use_datadir = True
-	if not use_userpass and not use_datadir:
-		print("Missing datadir or username and/or password in cfg file", file=sys.stderr)
-		sys.exit(1)
-
-	settings['port'] = int(settings['port'])
-	settings['min_height'] = int(settings['min_height'])
-	settings['max_height'] = int(settings['max_height'])
-
-	# Force hash byte format setting to be lowercase to make comparisons easier.
-	settings['rev_hash_bytes'] = settings['rev_hash_bytes'].lower()
-
-	# Get the rpc user and pass from the cookie if the datadir is set
-	if use_datadir:
-		get_rpc_cookie()
-
-	get_block_hashes(settings)
+    if len(sys.argv) != 2:
+        print("Usage: linearize-hashes.py CONFIG-FILE")
+        sys.exit(1)
+
+    f = open(sys.argv[1])
+    for line in f:
+        # skip comment lines
+        m = re.search('^\s*#', line)
+        if m:
+            continue
+
+        # parse key=value lines
+        m = re.search('^(\w+)\s*=\s*(\S.*)$', line)
+        if m is None:
+            continue
+        settings[m.group(1)] = m.group(2)
+    f.close()
+
+    if 'host' not in settings:
+        settings['host'] = '127.0.0.1'
+    if 'port' not in settings:
+        settings['port'] = 8332
+    if 'min_height' not in settings:
+        settings['min_height'] = 0
+    if 'max_height' not in settings:
+        settings['max_height'] = 313000
+    if 'rev_hash_bytes' not in settings:
+        settings['rev_hash_bytes'] = 'false'
+
+    use_userpass = True
+    use_datadir = False
+    if 'rpcuser' not in settings or 'rpcpassword' not in settings:
+        use_userpass = False
+    if 'datadir' in settings and not use_userpass:
+        use_datadir = True
+    if not use_userpass and not use_datadir:
+        print("Missing datadir or username and/or password in cfg file", file=sys.stderr)
+        sys.exit(1)
+
+    settings['port'] = int(settings['port'])
+    settings['min_height'] = int(settings['min_height'])
+    settings['max_height'] = int(settings['max_height'])
+
+    # Force hash byte format setting to be lowercase to make comparisons easier.
+    settings['rev_hash_bytes'] = settings['rev_hash_bytes'].lower()
+
+    # Get the rpc user and pass from the cookie if the datadir is set
+    if use_datadir:
+        get_rpc_cookie()
+
+    get_block_hashes(settings)