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我正在尝试通过将图像保存在内存中来在 tkinter 中显示缩略图io.BytesIO()。我得到_tkinter.TclError: format error in bitmap data。BitmapImage 支持X11 位图图像。所以我的问题是如何在将图像xbm传递给BitmapImage方法之前将其转换为？

from PIL import Image, ImageTk
import tkinter.scrolledtext as tkst
import tkinter as tk
import os, os.path
import io

class Example(tk.Frame):
    def __init__(self, master):
        tk.Frame.__init__(self, master)

    img = Image.open("1.jpg")
    image_size = 256, 256
    img.thumbnail(image_size,Image.ANTIALIAS)
    b = io.BytesIO()
    img.save(b, 'gif')
    p = b.getvalue()
    photo = tk.BitmapImage(data=p)
    self.photo = photo
    self.imageview = tk.Label(self, image = self.photo, background="black")
    self.imageview.grid(row=0, column=0, rowspan=2, sticky="nsew")

if __name__ == "__main__":
    root = tk.Tk()
    Example(root).pack(fill="both", expand=True)
    root.geometry("800x400")
    root.mainloop()

上次，我使用此代码解决了问题，但有时图像的高度会被截断。

    image = Image.open("1.jpg")
    basewidth = 900
    wpercent = (basewidth/float(image.size[0]))
    hsize = int((float(image.size[1])*float(wpercent)))
    image = image.resize((basewidth,hsize),Image.ANTIALIAS)
    self.photo = ImageTk.PhotoImage(image)
    self.imageview.configure(image=self.photo)
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