Question

我需要创建一个从URL提取图片并创建保存在本地计算机上的缩略图的函数。i不断出现语法错误并且无法弄清楚如何修复它这是我到目前为止所能得到的，任何人都可以帮助我

import urllib

def main():
  URL = "https://cdn.wallpapersafari.com/12/81/ptyhig.jpg"
  DEST_FILE_NAME = "C:\Users\jen\OneDrive\Pictures"
  urlib.urlretrieve (URL,DEST_FILE_NAME)

def resizeImage(srcPic,scale,dstWidth, dstHeight):
  destPic = makeEmptyPicture (dstWidth, dstHeight)
  #Adapted from https://cdn.wallpapersafari.com/12/81/ptyhig.jpg
  #Copy selected pixels from original image to new scaled-down image
  for x in range(dstHeight):
    for y in range (dstHeight):
      dst_pixel = getPixel(destPic, x , y)
      src_pixel = getPixel(srcPic, int(x*scale), int(y*scale))
      setColor(dst_pixel, getColor(src_pixel))

  return destPic

def main():
   srcFile + pickAFile()
   srcPic +  makePicture(srcFile)
   srcWidth + getWidth(srcPic)
   destWidth = 100
   print "The width of the sourcefile is " + str(srcWidth)
   if(srcWidth > dstWidth):
      srcHeight = float(getHeight(srcPic)) # I am making this a float to help the ratio calculation
      ratio = srcHeight/ float(srcWitdth)
      scale = srcWidth / float(dstWidth)
      print "Using scale " + str(scale) + " to reduce the picture"
      print "The height:width ratio is " + str(ratio)
      destHeight + int(ration'dstWidth + 0.5)
      print "Adjusting to " + str(dstHeight) + " by " + str(dstWidth)

      destPic = resizeImage(srcPic,scale,dstWidth,dstHeight)
      destFileName = "C:\Users\jen\OneDrive\Pictures" + srcFile.split(\\")[-1]
      print destFileName
      writePictureTo(destPic, destFileName)
   else:
    print "It is already a thumbnail"
    print "In your program you would copy the file to the thumb-file"

创建一个从URL提取图片并创建保存在本地计算机上的缩略图的函数

0 个答案: