.append in python

`.append()` is a method in Python that is used to add an element to the end of a list. The syntax for using `.append()` is as follows:

list_name.append(element)

where `list_name` is the name of the list to which the element is to be added and `element` is the value that is to be added to the list. The `.append()` method modifies the original list and returns `None`.

相关问题

sys.path.append(dir_path + '/../../python/openpose/Release');

This line of code adds the directory path '/../../python/openpose/Release' to the list of directories that Python searches for imported modules. This is useful if you have installed a module or package in a non-standard directory and want to be able to import it into your Python code without having to move it to a standard location. In this particular case, the directory path refers to the directory where the OpenPose library is installed, which is a popular computer vision library for body pose estimation.

类似于 for i in range(300,500): ox.append(i) oy.append(400) for i in range(300,500): ox.append(i) oy.append(600) for i in range(400,600): ox.append(300) oy.append(i) for i in range(400,600): ox.append(500) oy.append(i)用类似于这样的写

是的，你可以使用类似的循环来绘制一个矩形，代码示例如下：

# 定义矩形的边界坐标
left = 300
right = 500
top = 400
bottom = 600

# 绘制矩形
for x in range(left, right+1):
    ox.append(x)
    oy.append(top)
    ox.append(x)
    oy.append(bottom)
for y in range(top, bottom+1):
    ox.append(left)
    oy.append(y)
    ox.append(right)
    oy.append(y)

这段代码中，我们使用了 4 个变量来定义矩形的边界坐标，然后使用循环在四条边上分别绘制直线。注意，为了让矩形完整，我们需要将绘制的范围扩大 1，即将右边界和下边界的范围加 1。