利用Python自带PIL库扩展图片大小给图片加文字描述的方法示例

#!/usr/bin/env python/266495.html">python/57690.html">python3from PIL import Image, ImageDraw, ImageFontimport mathtext="尽管曾作为皇家猎场而存在，意大利大帕拉迪索国家公园一直保留着其野性的一面。画面里的赤狐静静地匍匐在秋草丛中等待时机，它的身躯与自然融为一体。所有狐狸都是机会主义者，生活在大帕拉迪索的赤狐也不例外；如果有可能，无论是鱼类还是野兔，即便是人类野餐留下的残羹冷炙，它们也不介意吃个一干二净。"def make_text_image(width, white, text, save_path, mode = "rgb"): """ 生成一个文字图形, white=1，表示白底黑字，否则为黑底白字 """ # 字体可能要改 # linux查看支持的汉字字体 # fc-list :lang=zh ft = ImageFont.truetype("DroidSansFallbackFull.ttf", 15) w, h = ft.getsize(text) # 计算要几行 lines = math.ceil(w / width) + 1 height = h * lines # 一个汉字的宽度 one_zh_width, h = ft.getsize("中") if len(mode) == 1: # L, 1  background = (255)  color = (0) if len(mode) == 3: # RGB  background = (255, 255, 255)  color = (0,0,0) if len(mode) == 4: # RGBA, CMYK  background = (255, 255, 255, 255)  color = (0,0,0,0) newImage = Image.new(mode, (width, height), background if white else color) draw = ImageDraw.Draw(newImage) # 分割行 text = text + " " #处理最后少一个字问题 text_list = [] start = 0 end = len(text) - 1 while start < end:  for n in range(end):   try_text = text[start:start+n]   w,h = ft.getsize(try_text)   if w + 2*one_zh_width > width:    break  text_list.append(try_text[0:-1])  start = start + n - 1; # print(text_list) i = 0 for t in text_list:   draw.text((one_zh_width, i * h), t, color if white else background, font=ft)  i = i + 1 newImage.save(save_path);def resize_canvas(org_image="aa.jpg", add_image="222.jpg", new_image_path="save2.jpg"): org_im = Image.open(org_image) org_width, org_height = org_im.size mode = org_im.mode make_text_image(org_width, 0, text, "222.jpg", mode) add_im = Image.open(add_image) add_width, add_height = add_im.size mode = org_im.mode newImage = Image.new(mode, (org_width, org_height + add_height)) newImage.paste(org_im, (0, 0, org_width, org_height)) newImage.paste(add_im, (0, org_height, add_width, add_height + org_height)) newImage.save(new_image_path)resize_canvas()