python 视频转字符画 大佬们多多指教

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from PIL import Image

codeLib = '''...................................................................  '''
count = len(codeLib)
print(count)

def transform(image_file):
    image_file.convert("L")
    codePic = ''
    for h in range(0,image_file.size[1]):  
       for w in range(0,image_file.size[0]):
           gray = image_file.getpixel((w,h))  
           #print(gray)
           gray1=int((gray[0]+gray[1]+gray[2])/3)
           #print(gray1)
            #映射
           if gray1<150:
                codePic=codePic+codeLib[0]
           else:
                codePic=codePic+codeLib[68]
           
           #codePic = codePic + codeLib[int((count*gray1)/256)]
           codePic=codePic+'  '
       codePic = codePic + '\n'
    print(codePic)
    return codePic
            
fp = open('3.jpg','rb')
image_file = Image.open(fp)
image_file =image_file.resize((int(image_file.size[0]*0.2),int(image_file.size[1]*0.2)))
text = transform(image_file)
tmp = open(r'C:\Users\acer\Desktop\Python案例\Alan.txt','w')
tmp.write(text)
tmp.close()