python - Python图像处理

Question

我知道没有足够的参数来格式化字符串，有什么建议吗？它在 else f.write 行 (52) 中。这是取平均像素值并将其替换为第二张图像。如您所见，该文件读取两个图像并写入它们。在写入过程中，我收到一条错误消息，指出没有足够的参数来格式化字符串。

def main():
f = open("BoardHappy.ppm","r")
lines = f.readlines()
kinds = lines[0]
size=lines[1].split()
width=int(size[0])
height=int(size[1])
depth = int(lines[2])

red=[]
green=[]
blue=[]
for i in range(3, len(lines)):
    temp = lines[i].split()
    for j in range(0, len(temp) ,3):
        red.append(int(temp[j]))
        green.append(int(temp[j+1]))
        blue.append(int(temp[j+2]))
f.close()

f = open("Godzilla.ppm","r")
lines = f.readlines()
kinds = lines[0]
size=lines[1].split()
width=int(size[0])
height=int(size[1])
depth = int(lines[2])

red1=[]
green1=[]
blue1=[]
for i in range(3, len(lines)):
    temp = lines[i].split()
    for j in range(0, len(temp), 3):
        red1.append(int(temp[j]))
        green1.append(int(temp[j+1]))
        blue1.append(int(temp[j+2]))
f.close()


f = open("lab5.ppm","w")
f.write("P3 \n")
width=720
height=540
f.write("%d %d \n"%(width,height))
f.write("255 \n")
for i in range(width*height):
    new = (red[i]+green[i]+blue[i])/3.0
    if new >=100:
        f.write("%d %d %d/n"% red[i], green[i],blue[i])
    else:
        f.write("%d %d %d/n"% red1[i], green1[i], blue1[i])

f.close()

main()

Answer 1

你需要括号：

f.write("%d %d %d/n"% (red[i], green[i],blue[i]))