minifier js css sublime text plugin

import sublime, sublime_plugin
import re , sys

# importante nome da Class tem de ser igual "command": "css_tominifier",
class CssTominifierCommand ( sublime_plugin.TextCommand ) :

    # activar ou desactivar botao caso seja um dos files que pretendo
    def is_enabled(self):
        return run()

    def run ( self , edit ) :
        selections              = self.view.sel()
        file_types_to_minify    = ['js', 'css']
        not_minify              = ['min']
        file_name_parts         = self.view.file_name().split('.')
        current_file_and_path   = self.view.file_name()
        SplitWhat               = '\\' if sys.platform == 'win32' else '/'
        parts_of_file_and_path  = self.view.file_name().split( SplitWhat )
        current_file            = parts_of_file_and_path[-1]
        current_file_name       = current_file.split('.')[0]
        current_file_size       = self.view.size()
        current_file_ext        = file_name_parts[-1]
        current_path            = current_file_and_path.replace ( current_file , "" )
        full_file               = current_path + current_file_name + '.min.' + current_file_ext

        # Files to exame css and js only
        if current_file_ext in file_types_to_minify :
            with open( current_file_and_path ) as file_in:
                lines = []
                for line in file_in:
                    line = re.sub ( r'\s*\+\s*'                   , '+' , line )
                    line = re.sub ( r'\s*>\s*'                    , '>' , line )
                    line = re.sub ( r'\s*{\s*'                    , '{' , line )
                    line = re.sub ( r'\s*}\s*'                    , '}' , line )
                    line = re.sub ( r'\s*\(\s*'                   , '(' , line )
                    line = re.sub ( r'\s*\)\s*'                   , ')' , line )
                    line = re.sub ( r'\s*,\s*'                    , ',' , line )
                    line = re.sub ( r'\s*!\s*'                    , '!' , line )
                    line = re.sub ( r'\s*:\s*'                    , ':' , line )
                    line = re.sub ( r'\s*;\s*'                    , ';' , line )
                    line = re.sub ( r'\s*\*\s*'                   , '*' , line )
                    line = re.sub ( r'\t|\n|\r|\s\s+|\/(.+)\/'    , ''  , line )
                    lines.append(line)
            # agora vou meter tudo numa so linha
            clean = ''.join ( l for l in lines )
            # Criar novo ficheiro min
            if sublime.version() < '3':
                with open( full_file , 'w+' ) as min_file:
                    min_file.write( clean )
            else:
                with open(full_file, 'wb+' ) as min_file:
                    min_file.write ( bytes ( clean , 'utf-8' ) )
            # abrir o novo ficheiro numa nova tab
            self.view.window().open_file( full_file )