rm extra whitespace in python, per PEP8
diff --git a/amalgamate.py b/amalgamate.py
index 550f6a6..22b825b 100644
--- a/amalgamate.py
+++ b/amalgamate.py
@@ -10,46 +10,46 @@
 import sys
 
 class AmalgamationFile:
-    def __init__( self, top_dir ):
+    def __init__(self, top_dir):
         self.top_dir = top_dir
         self.blocks = []
 
-    def add_text( self, text ):
-        if not text.endswith( "\n" ):
+    def add_text(self, text):
+        if not text.endswith("\n"):
             text += "\n"
-        self.blocks.append( text )
+        self.blocks.append(text)
 
-    def add_file( self, relative_input_path, wrap_in_comment=False ):
-        def add_marker( prefix ):
-            self.add_text( "" )
-            self.add_text( "// " + "/"*70 )
-            self.add_text( "// %s of content of file: %s" % (prefix, relative_input_path.replace("\\","/")) )
-            self.add_text( "// " + "/"*70 )
-            self.add_text( "" )
-        add_marker( "Beginning" )
-        f = open( os.path.join( self.top_dir, relative_input_path ), "rt" )
+    def add_file(self, relative_input_path, wrap_in_comment=False):
+        def add_marker(prefix):
+            self.add_text("")
+            self.add_text("// " + "/"*70)
+            self.add_text("// %s of content of file: %s" % (prefix, relative_input_path.replace("\\","/")))
+            self.add_text("// " + "/"*70)
+            self.add_text("")
+        add_marker("Beginning")
+        f = open(os.path.join(self.top_dir, relative_input_path), "rt")
         content = f.read()
         if wrap_in_comment:
             content = "/*\n" + content + "\n*/"
-        self.add_text( content )
+        self.add_text(content)
         f.close()
-        add_marker( "End" )
-        self.add_text( "\n\n\n\n" )
+        add_marker("End")
+        self.add_text("\n\n\n\n")
 
-    def get_value( self ):
-        return "".join( self.blocks ).replace("\r\n","\n")
+    def get_value(self):
+        return "".join(self.blocks).replace("\r\n","\n")
 
-    def write_to( self, output_path ):
-        output_dir = os.path.dirname( output_path )
-        if output_dir and not os.path.isdir( output_dir ):
-            os.makedirs( output_dir )
-        f = open( output_path, "wb" )
-        f.write( str.encode(self.get_value(), 'UTF-8') )
+    def write_to(self, output_path):
+        output_dir = os.path.dirname(output_path)
+        if output_dir and not os.path.isdir(output_dir):
+            os.makedirs(output_dir)
+        f = open(output_path, "wb")
+        f.write(str.encode(self.get_value(), 'UTF-8'))
         f.close()
 
-def amalgamate_source( source_top_dir=None,
+def amalgamate_source(source_top_dir=None,
                        target_source_path=None,
-                       header_include_path=None ):
+                       header_include_path=None):
     """Produces amalgated source.
        Parameters:
            source_top_dir: top-directory
@@ -57,69 +57,69 @@
            header_include_path: generated header path relative to target_source_path.
     """
     print("Amalgating header...")
-    header = AmalgamationFile( source_top_dir )
-    header.add_text( "/// Json-cpp amalgated header (http://jsoncpp.sourceforge.net/)." )
-    header.add_text( "/// It is intented to be used with #include <%s>" % header_include_path )
-    header.add_file( "LICENSE", wrap_in_comment=True )
-    header.add_text( "#ifndef JSON_AMALGATED_H_INCLUDED" )
-    header.add_text( "# define JSON_AMALGATED_H_INCLUDED" )
-    header.add_text( "/// If defined, indicates that the source file is amalgated" )
-    header.add_text( "/// to prevent private header inclusion." )
-    header.add_text( "#define JSON_IS_AMALGAMATION" )
-    header.add_file( "include/json/version.h" )
-    header.add_file( "include/json/config.h" )
-    header.add_file( "include/json/forwards.h" )
-    header.add_file( "include/json/features.h" )
-    header.add_file( "include/json/value.h" )
-    header.add_file( "include/json/reader.h" )
-    header.add_file( "include/json/writer.h" )
-    header.add_file( "include/json/assertions.h" )
-    header.add_text( "#endif //ifndef JSON_AMALGATED_H_INCLUDED" )
+    header = AmalgamationFile(source_top_dir)
+    header.add_text("/// Json-cpp amalgated header (http://jsoncpp.sourceforge.net/).")
+    header.add_text("/// It is intented to be used with #include <%s>" % header_include_path)
+    header.add_file("LICENSE", wrap_in_comment=True)
+    header.add_text("#ifndef JSON_AMALGATED_H_INCLUDED")
+    header.add_text("# define JSON_AMALGATED_H_INCLUDED")
+    header.add_text("/// If defined, indicates that the source file is amalgated")
+    header.add_text("/// to prevent private header inclusion.")
+    header.add_text("#define JSON_IS_AMALGAMATION")
+    header.add_file("include/json/version.h")
+    header.add_file("include/json/config.h")
+    header.add_file("include/json/forwards.h")
+    header.add_file("include/json/features.h")
+    header.add_file("include/json/value.h")
+    header.add_file("include/json/reader.h")
+    header.add_file("include/json/writer.h")
+    header.add_file("include/json/assertions.h")
+    header.add_text("#endif //ifndef JSON_AMALGATED_H_INCLUDED")
 
-    target_header_path = os.path.join( os.path.dirname(target_source_path), header_include_path )
+    target_header_path = os.path.join(os.path.dirname(target_source_path), header_include_path)
     print("Writing amalgated header to %r" % target_header_path)
-    header.write_to( target_header_path )
+    header.write_to(target_header_path)
 
-    base, ext = os.path.splitext( header_include_path )
+    base, ext = os.path.splitext(header_include_path)
     forward_header_include_path = base + "-forwards" + ext
     print("Amalgating forward header...")
-    header = AmalgamationFile( source_top_dir )
-    header.add_text( "/// Json-cpp amalgated forward header (http://jsoncpp.sourceforge.net/)." )
-    header.add_text( "/// It is intented to be used with #include <%s>" % forward_header_include_path )
-    header.add_text( "/// This header provides forward declaration for all JsonCpp types." )
-    header.add_file( "LICENSE", wrap_in_comment=True )
-    header.add_text( "#ifndef JSON_FORWARD_AMALGATED_H_INCLUDED" )
-    header.add_text( "# define JSON_FORWARD_AMALGATED_H_INCLUDED" )
-    header.add_text( "/// If defined, indicates that the source file is amalgated" )
-    header.add_text( "/// to prevent private header inclusion." )
-    header.add_text( "#define JSON_IS_AMALGAMATION" )
-    header.add_file( "include/json/config.h" )
-    header.add_file( "include/json/forwards.h" )
-    header.add_text( "#endif //ifndef JSON_FORWARD_AMALGATED_H_INCLUDED" )
+    header = AmalgamationFile(source_top_dir)
+    header.add_text("/// Json-cpp amalgated forward header (http://jsoncpp.sourceforge.net/).")
+    header.add_text("/// It is intented to be used with #include <%s>" % forward_header_include_path)
+    header.add_text("/// This header provides forward declaration for all JsonCpp types.")
+    header.add_file("LICENSE", wrap_in_comment=True)
+    header.add_text("#ifndef JSON_FORWARD_AMALGATED_H_INCLUDED")
+    header.add_text("# define JSON_FORWARD_AMALGATED_H_INCLUDED")
+    header.add_text("/// If defined, indicates that the source file is amalgated")
+    header.add_text("/// to prevent private header inclusion.")
+    header.add_text("#define JSON_IS_AMALGAMATION")
+    header.add_file("include/json/config.h")
+    header.add_file("include/json/forwards.h")
+    header.add_text("#endif //ifndef JSON_FORWARD_AMALGATED_H_INCLUDED")
 
-    target_forward_header_path = os.path.join( os.path.dirname(target_source_path),
-                                               forward_header_include_path )
+    target_forward_header_path = os.path.join(os.path.dirname(target_source_path),
+                                               forward_header_include_path)
     print("Writing amalgated forward header to %r" % target_forward_header_path)
-    header.write_to( target_forward_header_path )
+    header.write_to(target_forward_header_path)
 
     print("Amalgating source...")
-    source = AmalgamationFile( source_top_dir )
-    source.add_text( "/// Json-cpp amalgated source (http://jsoncpp.sourceforge.net/)." )
-    source.add_text( "/// It is intented to be used with #include <%s>" % header_include_path )
-    source.add_file( "LICENSE", wrap_in_comment=True )
-    source.add_text( "" )
-    source.add_text( "#include <%s>" % header_include_path )
-    source.add_text( "" )
+    source = AmalgamationFile(source_top_dir)
+    source.add_text("/// Json-cpp amalgated source (http://jsoncpp.sourceforge.net/).")
+    source.add_text("/// It is intented to be used with #include <%s>" % header_include_path)
+    source.add_file("LICENSE", wrap_in_comment=True)
+    source.add_text("")
+    source.add_text("#include <%s>" % header_include_path)
+    source.add_text("")
     lib_json = "src/lib_json"
-    source.add_file( os.path.join(lib_json, "json_tool.h") )
-    source.add_file( os.path.join(lib_json, "json_reader.cpp") )
-    source.add_file( os.path.join(lib_json, "json_batchallocator.h") )
-    source.add_file( os.path.join(lib_json, "json_valueiterator.inl") )
-    source.add_file( os.path.join(lib_json, "json_value.cpp") )
-    source.add_file( os.path.join(lib_json, "json_writer.cpp") )
+    source.add_file(os.path.join(lib_json, "json_tool.h"))
+    source.add_file(os.path.join(lib_json, "json_reader.cpp"))
+    source.add_file(os.path.join(lib_json, "json_batchallocator.h"))
+    source.add_file(os.path.join(lib_json, "json_valueiterator.inl"))
+    source.add_file(os.path.join(lib_json, "json_value.cpp"))
+    source.add_file(os.path.join(lib_json, "json_writer.cpp"))
 
     print("Writing amalgated source to %r" % target_source_path)
-    source.write_to( target_source_path )
+    source.write_to(target_source_path)
 
 def main():
     usage = """%prog [options]
@@ -137,12 +137,12 @@
     parser.enable_interspersed_args()
     options, args = parser.parse_args()
 
-    msg = amalgamate_source( source_top_dir=options.top_dir,
+    msg = amalgamate_source(source_top_dir=options.top_dir,
                              target_source_path=options.target_source_path,
-                             header_include_path=options.header_include_path )
+                             header_include_path=options.header_include_path)
     if msg:
-        sys.stderr.write( msg + "\n" )
-        sys.exit( 1 )
+        sys.stderr.write(msg + "\n")
+        sys.exit(1)
     else:
         print("Source succesfully amalagated")