让我们考虑一下这个例子:
pbm文件“imFile.pbm”包含如下像素:
P1
# Comment
9 6
0 0 0 0 0 0 0 0 0
0 1 1 0 0 0 0 0 0
0 1 1 0 0 0 0 0 0
0 1 1 0 0 0 0 0 0
0 1 1 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0
如何确定图像的宽度和高度。我使用了以下代码但失败了。
with open("imFile.pbm", 'rb') as f:
image = f.size
print image
f.close()
当我在我的ubuntu14.04操作系统中编译它时,它显示错误。任何建议将不胜感激。提前谢谢。
答案 0 :(得分:0)
宽度和高度就在文件中,在第一行之后的第一行中,跳过注释。这不是.size的用途;你需要阅读并解析文件。
class AnimalType {
private static final Map<String, Animal> animals = new HashMap<String, Animal>();
static {
// Populating map with default animals
addAnimal("big","BELLOWWWWW"); // bison
addAnimal("small","SQUEEEEEAK"); // mouse
addAnimal("lazy","ROARRRRR"); // lion
addAnimal("loyal","WOOF "); // dog
}
public static void addAnimal(String criteria, final String sound) {
// Assigning a anonymous implementation of animal to the given criteria
animals.put(criteria, new Animal() {
@Override
public void talk() {
System.out.println(sound);
}
});
}
public static Animal getAnimal(String criteria) {
// Returning an animal from the animals map
return animals.get(criteria);
}
}