What does seth mean in python

Turtle library is a very popular function library for drawing images in the Python language. The turtle.seth(angle) function in Turtle represents the direction of movement of the turtle when it starts. It contains one input parameter, which is the angle value.

You need to import the library before use: import turtle

• turtle.setup(width,height,startx,starty)
　-setup() Set the position and size of the form
Relative to the coordinates of the starting point of the desktop and the width and height of the window, if the starting point of the window is not written, it defaults to the exact center of the desktop
The coordinate origin of the form defaults to the center of the window
•Absolute coordinates
　○ turtle.goto(100,100): refers to pointing from the current point to the coordinates given in brackets
• Turtle coordinates, the current point is regarded as the coordinate, including forward direction, backward direction, left direction, and right direction
　○ turtle .fd(d): refers to running in the forward direction of the turtle
○ turtle.bk(d): refers to running in the opposite direction of the turtle
○ turtle.circle(r,angle): refers to running in the opposite direction of the turtle A certain point on the left makes a circular motion
• Absolute angle
　○ turtle.seth(angle): Only changes the turtle’s direction of travel (the angle is counterclockwise), but does not move forward, angle is an absolute degree
• Turtle angle
　○ turtle.left(angle)
　○ turtle.right(angle)

Related recommendations: "Python Video Tutorial"

1. RGB color system

The color value range of rgb is an integer from 0-255 or a decimal from 0-1

2. Switch RGB color mode

turtle.colormode(mode)

1.0:RGB decimal mode 255:RGB integer mode

3. Brush control function

1. turtle.penup(), alias turtle.pu(). The brush is lifted, leaving no traces.
2. turtle.pendown(), alias turtle.pd(), the brush is dropped, leaving traces.
3. turtle.pensize(width) alias turtle.width(width) brush width
4, turtle.pencolor(color)
color is a color string or rgb value
eg: turtle.pencolor("purple") Color string
turtle.pencolor(0.63,0.13,0.94)RGB decimal value
turtle.pencolor((0.63,0.13,0.94))RGB tuple value

four , Motion control function　

1. turtle.forword(d) alias turtle.fd(d) forward movement
d: travel distance, can be a negative number
2.turtle.circle (r,extent=None)
According to the radius r, draw the arc of an extent angle
r: The default center of the circle is r distance to the left side of the turtle

5. Direction control function

1. turtle.setheading(angle) alias turtle.seth(angle) changes the direction of travel
2. angle: the angle to change the direction (in absolute coordinates, absolute angle)
3. turtle.left(angle)
4, turtle.right(angle)
angle: the angle turned in the current direction (turtle angle)

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