use 4-spaces indentation

lib/deserialize.py

@@ -35,8 +35,10 @@ class BCDataStream(object):
     def map_file(self, file, start):  # Initialize with bytes from file
         self.input = mmap.mmap(file.fileno(), 0, access=mmap.ACCESS_READ)
         self.read_cursor = start
+
     def seek_file(self, position):
         self.read_cursor = position
+        
     def close_file(self):
         self.input.close()
 
@@ -264,6 +266,7 @@ opcodes = Enumeration("Opcodes", [
     ("OP_INVALIDOPCODE", 0xFFFF),
 ])
 
+
 def script_GetOp(bytes):
     i = 0
     while i < len(bytes):
@@ -291,9 +294,11 @@ def script_GetOp(bytes):
 
         yield (opcode, vch, i)
 
+
 def script_GetOpName(opcode):
     return (opcodes.whatis(opcode)).replace("OP_", "")
 
+
 def decode_script(bytes):
     result = ''
     for (opcode, vch, i) in script_GetOp(bytes):
@@ -305,6 +310,7 @@ def decode_script(bytes):
             result += script_GetOpName(opcode)
     return result
 
+
 def match_decoded(decoded, to_match):
     if len(decoded) != len(to_match):
         return False;
@@ -377,3 +383,5 @@ def get_address_from_output_script(bytes):
         return hash_160_to_bc_address(decoded[1][1],5)
 
     return "(None)"
+
+