我正在尝试用 Python 编写纸牌游戏并想要放置图像，但图像不会出现在 Tkinter 的画布上 [英] I am attempting to code a card game in Python and want to place an image, but the image wont appear on the canvas in Tkinter

问题描述

from Tkinter import *
frame = Tk()
frame.geometry("1200x900")

w = Canvas(frame,width=250,height=450)
w.place(x=30,y=300)

img=PhotoImage(file="card2.ppm")
w.create_image(100,100,anchor=NW,image=img)

frame.mainloop()

推荐答案

PhotoImage 类可以从文件中读取 GIF 和 PGM/PPM 图像:

The PhotoImage class can read GIF and PGM/PPM images from files:

photo = PhotoImage(file="image.gif")

photo = PhotoImage(file="lenna.pgm")

PhotoImage 还可以从字符串中读取 base64 编码的 GIF 文件.您可以使用它在 Python 源代码中嵌入图像(使用 base64 模块中的函数将二进制数据转换为 base64 编码的字符串):

The PhotoImage can also read base64-encoded GIF files from strings. You can use this to embed images in Python source code (use functions in the base64 module to convert binary data to base64-encoded strings):

photo = """
R0lGODdhEAAQAIcAAAAAAAEBAQICAgMDAwQEBAUFBQY    GBgcHBwgICAkJCQoKCgsLCwwMDA0NDQ4O
    Dg8PDxAQEBERERISEhMTExQUFBUVFRYWFhcXFxgYGBkZ        GRoaGhsbGxwcHB0dHR4eHh8fHyAgICEh

...

    AfjHtq1bAP/i/gPwry4AAP/yAtj77x+Af4ABAwDwrzAAAP8S 
  A /j3DwCAfwAA/JsM4J/lfwD+/QMA
4B8AAP9Ci/4HoLTpfwD+qV4NoHVAADs=
"""

photo = PhotoImage(data=photo)

如果您需要处理其他文件格式，Python 图像库 (PIL) 包含的类可让您加载 30 多种格式的图像，并将它们转换为与 Tkinter 兼容的图像对象:

If you need to work with other file formats, the Python Imaging Library (PIL) contains classes that lets you load images in over 30 formats, and convert them to Tkinter-compatible image objects:

from PIL import Image, ImageTk

image = Image.open("lenna.jpg")
photo = ImageTk.PhotoImage(image)

您可以在 Tkinter 接受图像对象的任何地方使用 PhotoImage 实例.一个例子:

You can use a PhotoImage instance everywhere Tkinter accepts an image object. An example:

label = Label(image=photo)
label.image = photo # keep a reference!
label.pack()

您必须在 Python 程序中保留对图像对象的引用，方法是将其存储在全局变量中，或将其附加到另一个对象.

You must keep a reference to the image object in your Python program, either by storing it in a global variable, or by attaching it to another object.

尝试运行:

import Tkinter as tk
 root = tk.Tk()
root.title("display a website image")
photo = tk.PhotoImage(file= 
r "C:\Some\Local\location\smile.ppm")
cv = tk.Canvas()
cv.pack(side='top', fill='both', expand='yes')
cv.create_image(10, 10, image=photo, anchor='nw')
root.mainloop()

如果这不起作用，请尝试添加参考

If this does not work try adding a reference

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