a few minor cleanups and fixes

mmgen/bip39.py

@@ -2114,8 +2114,8 @@ zoo
 
 		wl = cls.digits[wl_id]
 
-		for n in range(len(words)):
-			if words[n] not in wl:
+		for n,w in enumerate(words):
+			if w not in wl:
 				raise MnemonicError('word #{} is not in the BIP39 word list'.format(n+1))
 
 		res = ''.join(['{:011b}'.format(wl.index(w)) for w in words])

mmgen/tool.py

@@ -70,13 +70,15 @@ def _usage(cmd=None,exit_val=1):
 		'EXAMPLES:\n\n'
 		'  Generate a random Bech32 public/private keypair for LTC:\n'
 		'  $ mmgen-tool -r0 --coin=ltc --type=bech32 randpair\n\n'
+		'  Generate a DASH compressed public key address from the supplied WIF key:\n'
+		'  $ mmgen-tool --coin=dash --type=compressed wif2addr XJkVRC3eGKurc9Uzx1wfQoio3yqkmaXVqLMTa6y7s3M3jTBnmxfw\n\n'
 		'  Generate a well-known burn address:\n'
 		'  $ mmgen-tool hextob58chk 000000000000000000000000000000000000000000\n\n'
 		'  Generate a random 12-word seed phrase:\n'
 		'  $ mmgen-tool -r0 mn_rand128\n\n'
 		'  Same as above, but get additional entropy from user:\n'
 		'  $ mmgen-tool mn_rand128\n\n'
-		'  Convert a string to base 58:\n'
+		'  Encode bytes from a file to base 58:\n'
 		'  $ mmgen-tool bytestob58 /etc/timezone pad=20\n\n'
 		'  Reverse a hex string:\n'
 		'  $ mmgen-tool hexreverse "deadbeefcafe"\n\n'

mmgen/util.py

@@ -268,13 +268,13 @@ def is_hex_str(s):    return set(list(s.lower())) <= set(list(hexdigits.lower())
 def is_hex_str_lc(s): return set(list(s))         <= set(list(hexdigits.lower()))
 def is_hex_str_uc(s): return set(list(s))         <= set(list(hexdigits.upper()))
 
+def is_utf8(s):
+	return is_ascii(s,enc='utf8')
 def is_ascii(s,enc='ascii'):
 	try:    s.decode(enc)
 	except: return False
 	else:   return True
 
-def is_utf8(s): return is_ascii(s,enc='utf8')
-
 def match_ext(addr,ext):
 	return addr.split('.')[-1] == ext
 

test/tooltest2.py

@@ -276,7 +276,7 @@ tests = {
 		],
 		'randb58': [
 			( [], {'boolfunc':is_b58_str}, ['-r0'] ),
-			( ['nbytes=16'], {'boolfunc':is_b58_str,'len':22}, ['-r0'] ),
+			( ['nbytes=16'], {'boolfunc':is_b58_str}, ['-r0'] ),
 			( ['nbytes=12','pad=0'], is_b58_str, ['-r0'] ),
 		],
 	},