```
import sys
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.Qsci import *
import re


class MyLexer(QsciLexerCustom):

    def __init__(self, parent):
        super(MyLexer, self).__init__(parent)

        # Default text settings
        # ----------------------
         self.setDefaultColor(QColor("#ff000000"))
         self.setDefaultPaper(QColor("#ffffffff"))
         self.setDefaultFont(QFont("Consolas", 14))
 
         # Initialize colors per style
         # ----------------------------
         self.setColor(QColor("#ff000000"), 0)   # Style 0: black
         self.setColor(QColor("#ff7f0000"), 1)   # Style 1: red
         self.setColor(QColor("#ff0000bf"), 2)   # Style 2: blue
         self.setColor(QColor("#ff007f00"), 3)   # Style 3: green
  
         # Initialize paper colors per style
         # ----------------------------------
         self.setPaper(QColor("#ffffffff"), 0)   # Style 0: white
         self.setPaper(QColor("#ffffffff"), 1)   # Style 1: white
         self.setPaper(QColor("#ffffffff"), 2)   # Style 2: white
         self.setPaper(QColor("#ffffffff"), 3)   # Style 3: white
  
         # Initialize fonts per style
         # ---------------------------
         self.setFont(QFont("Consolas", 14, weight=QFont.Bold), 0)   # Style 0: Consolas 14 
         self.setFont(QFont("Consolas", 14, weight=QFont.Bold), 1)   # Style 1: Consolas 14 
         self.setFont(QFont("Consolas", 14, weight=QFont.Bold), 2)   # Style 2: Consolas 14 
         self.setFont(QFont("Consolas", 14, weight=QFont.Bold), 3)   # Style 3: Consolas 14 
  
     ''''''
  
     def language(self):
         return "SimpleLanguage"
     ''''''
  
     def description(self, style):
         if style == 0:
             return "myStyle_0"
         elif style == 1:
             return "myStyle_1"
         elif style == 2:
             return "myStyle_2"
         elif style == 3:
             return "myStyle_3"
         ###
         return ""
     ''''''
  
     def styleText(self, start, end):
         # 1. Initialize the styling procedure
         # ------------------------------------
         self.startStyling(start)
  
         # 2. Slice out a part from the text
         # ----------------------------------
         text = self.parent().text()[start:end]
  
         # 3. Tokenize the text
         # ---------------------
         p = re.compile(r"[*]\/|\/[*]|\s+|\w+|\W")
  
         # 'token_list' is a list of tuples: (token_name, token_len)
         token_list = [ (token, len(bytearray(token, "utf-8"))) for token in p.findall(text)]
  
         # 4. Style the text
         # ------------------
         # 4.1 Check if multiline comment
         multiline_comm_flag = False
         editor = self.parent()
         if start > 0:
             previous_style_nr = editor.SendScintilla(editor.SCI_GETSTYLEAT, start - 1)
             if previous_style_nr == 3:
                 multiline_comm_flag = True
             ###
         ###
         # 4.2 Style the text in a loop
         for i, token in enumerate(token_list):
             if multiline_comm_flag:
                 self.setStyling(token[1], 3)
                 if token[0] == "*/":
                     multiline_comm_flag = False
                 ###
             ###
             else:
                 if token[0] in ["for", "while", "return", "int", "include"]:
                     # Red style
                     self.setStyling(token[1], 1)
  
                  elif token[0] in ["(", ")", "{", "}", "[", "]", "#"]:
                      # Blue style
                      self.setStyling(token[1], 2)
   
                  elif token[0] == "/*":
                      multiline_comm_flag = True
                      self.setStyling(token[1], 3)
   
                  else:
                      # Default style
                      self.setStyling(token[1], 0)
                  ###
              ###
          ###
   
      ''''''
   
   ''' end Class '''



```


- hoge
```
          self.__lexer = MyLexer(self.__editor)
          self.__editor.setLexer(self.__lexer)
```