Fix various formatting issues

Author: petertodd

bitcoin/base58.py

@@ -47,20 +47,21 @@ def encode(b):
     # Divide that integer into bas58
     res = []
     while n > 0:
-        n, r = divmod (n, 58)
+        n, r = divmod(n, 58)
         res.append(b58_digits[r])
     res = ''.join(res[::-1])
 
     # Encode leading zeros as base58 zeros
-    import sys
     czero = b'\x00'
     if sys.version > '3':
         # In Python3 indexing a bytes returns numbers, not characters.
         czero = 0
     pad = 0
     for c in b:
-        if c == czero: pad += 1
-        else: break
+        if c == czero:
+            pad += 1
+        else:
+            break
     return b58_digits[0] * pad + res
 
 def decode(s):

bitcoin/core/bignum.py

@@ -22,13 +22,13 @@ def bn_bytes(v, have_ext=False):
     ext = 0
     if have_ext:
         ext = 1
-    return ((v.bit_length()+7)//8) + ext
+    return ((v.bit_length() + 7) // 8) + ext
 
 def bn2bin(v):
     s = bytearray()
     i = bn_bytes(v)
     while i > 0:
-        s.append((v >> ((i-1) * 8)) & 0xff)
+        s.append((v >> ((i - 1) * 8)) & 0xff)
         i -= 1
     return s
 

bitcoin/core/key.py

@@ -21,7 +21,7 @@
 import hashlib
 import sys
 
-ssl = ctypes.cdll.LoadLibrary(ctypes.util.find_library ('ssl') or 'libeay32')
+ssl = ctypes.cdll.LoadLibrary(ctypes.util.find_library('ssl') or 'libeay32')
 
 # this specifies the curve used with ECDSA.
 NID_secp256k1 = 714 # from openssl/obj_mac.h
@@ -31,7 +31,7 @@ def _check_result (val, func, args):
     if val == 0:
         raise ValueError
     else:
-        return ctypes.c_void_p (val)
+        return ctypes.c_void_p(val)
 
 ssl.EC_KEY_new_by_curve_name.restype = ctypes.c_void_p
 ssl.EC_KEY_new_by_curve_name.errcheck = _check_result