Python で縦横比を維持しながら画像のサイズを変更する

# First, we have to import the modules here
from tkinter import *
from PIL import Image, ImageTk

# Now we are creating the object
root = Tk()
# Here, just reading the Image
image = Image.open("koala.png")
# Here now, using resize() method, resizing the image
resize_originalimage = image.resize((140, 80))
img_1 = ImageTk.PhotoImage(orgnlimg)
# creating, add resize image, and labeling it
label1 = Label(image=img_1)
label1.image = img_1
label1.pack()
# finally, executing the Tkinter
root.mainloop()

# Python Code to resize an image while maintaining the original aspect ratio, using the PIL Methods
import PIL
from PIL import Image

# setting the size of resized image
Imagewidth = 80
Imageheight = 100
img_2 = Image.open("bear.jpg")
wpercent = Imagewidth / float(img_2.size[0])
hsize = int((float(img_2.size[1]) * float(wpercent)))
# img = img.resize((mywidth,hsize), PIL.Image.ANTIALIAS)
img_2 = img_2.resize((Imagewidth, Imageheight), PIL.Image.Resampling.LANCZOS)
img_2.save("resizedImage.jpg")
img_2.show()

# Importing Image class from PIL module by maintaining its aspect ratio
from PIL import Image

# Opens an image in RGB mode
# For the external path, we use this :
# img_3 = Image.open(r"Image Path of the Original Image")
# For internal path
img_3 = Image.open("cat.png")
# The size of the image in pixels (size of the original image)
# (This is not mandatory)
width, height = img_3.size
# Setting the cropped image points
left = 4
top = height / 5
right = 154
bottom = 3 * height / 5
# Cropped image of the above dimension
# (It will not change the original image)
img_3 = img_3.crop((left, top, right, bottom))
newsize = (300, 300)
img_3 = img_3.resize(newsize)
# img_3=img_3.save(newsize)
# Shows the image in the image viewer
img_3.show()