丁泓森很对

from wonderLang import *

def rect(x, y, w, h):
    jump(x, y)
    angle = 90
    i = 0
    while i < 2:
        forward(w)
        right(angle)
        forward(h)
        right(angle)
        i = i + 1
        
def center_rect(x, y, w, h):
    jump(x, y)
    x1 = x - w / 2
    y1 = y + h / 2
    rect(x1, y1, w, h)

def cos(degree):
    import math
    radians = degree * math.pi / 180
    return math.cos(radians)

def sin(degree):
    import math
    radians = degree * math.pi / 180
    return math.sin(radians)

def star(x, y, length):
    jump(x, y)
    angle = 144
    i = 0
    while i < 5:
        forward(length)
        right(angle)
        i = i + 1
        
def center_star(x, y, r):
    jump(x, y)
    angle = 18
    x1 = x - cos(angle) * r
    y1 = y + sin(angle) * r
    length = cos(angle) * r * 2
    star(x1, y1, length)


def china(x, y):
    jump(x, y)
    w = 300
    h = 200
    center_rect(x, y, w, h)
    center_star(x - 100, y + 50, 30)
    center_star(x - 50, y + 10, 10)
    center_star(x - 50, y + 80, 10)
    center_star(x - 30, y + 30, 10)
    center_star(x - 30, y + 60, 10)

china(0,0)

画国旗需要用的那些函数放前面

最后用函数把它们全部引用

只能说一句，自己国家国旗都不会画。😕😕 😕

from wonderLang import *
import math

def china(x,y):
    jump(x,y)
    w=300
    h=200
    center_rect(x,y,w,h)
    center_star(x - 100, y + 50, 30)
    center_star(x - 50, y + 10, 10)
    center_star(x - 50, y + 80, 10)
    center_star(x - 30, y + 30, 10)
    center_star(x - 30, y + 60, 10)

def center_rect(x, y, w, h):
    jump(x,y)
    x1=x-w/2
    y1=y+h/2
    rext(x1,y1,w,h)

def center_star(x, y, r):
    jump(x,y)
    angle=18
    x1 = x - cos(angle) * r
    y1 = y + sin(angle) * r
    length = cos(angle) * r * 2
    star(x1,y1,length)


def cos(degree):
    import math
    radians = degree * math.pi / 180
    return math.cos(radians)

def sin(degree):
    import math
    radians = degree * math.pi / 180
    return math.sin(radians)

def star(x,y,length):
    jump(x,y)
    angle = 144
    i=0
    while i<5:
        forward(length)
        right(angle)
        i=i+1


def rext(x,y,w,h):
    jump(x,y)
    angle = 90
    i=0
    while i<2:
        forward(w)
        right(angle)
        forward(h)
        right(angle)
        i=i+1

china(0,0)

我猜你的报错内容应该是NameError(我当初也是这样)，放到空白文件运行就知道了

from wonderLang import *
import math
def polygon(sides, length):
    # jump(x,y)
    i = 0
    while i < sides:
        forward(length)
        right(180 - ((sides - 2) * 180 / sides))
        i = i + 1
def circle(x, y, r):
    jump(x, y)
    sides = 36
    length = (2 * math.pi * r) / sides
    left_angle = (90 + (360 / sides) / 2)
    right(-left_angle)
    forward(r)
    right(left_angle)
    polygon(sides, length)
def rect(x1, y1, w, h):
    jump(x1, y1)
    angle=90
    i = 0
    while i < 2:
        forward(w)
        right(angle)
        forward(h)
        right(angle)
        i = i + 1
def center_rect(x, y, w, h):
    jump(x, y)
    x1 = x - w/2
    y1 = y + h/2
    rect(x1, y1 ,300, 200)
def japan(x, y):
    w = 300
    h = 200
    center_rect(x, y, w, h)
    # circle(x, y, 60)
# japan(0, 0)
# center_rect(0, 0, 100, 50)
def sin(degree):
    import math
    radians = degree * math.pi / 180
    return math.sin(radians)
def cos(degree):
    import math
    radians = degree * math.pi / 180
    return math.cos(radians)
def star(x, y, length):
    jump(x, y)
    angle = 144
    i = 0
    while i < 5:
        forward(length)
        right(angle)
        i = i + 1

def center_star(x, y, r):
    angle = 18
    x1 = x - cos(angle) * r
    y1 = y + sin(angle) * r
    length = cos(angle) * r * 2
    star(x1, y1, length)
# center_star(100, 10, 200)

# Todo 任务 六
# 实现一个函数画中国国旗
# 五角星不要求角度朝向（统一用正五角星），国旗宽高 300 * 200
# https://static.wonderland.run/cmw/china.jpg
# x, y 是国旗中心点
# china(x, y)

# 提示:
#     1. 使用 rect 函数画一个矩形
#     2. 计算比例，画 5 个五角星(调用 5 次), 计算好坐标
def china(x, y):
    jump(x, y)
    w=300
    h=200
    center_rect(x, y, w, h)
    center_star(x-100, y+50, 30)
    center_star(x-50, y+10, 10)
    center_star(x-50, y+80, 10)
    center_star(x-30, y+30, 10)
    center_star(x-30, y+60, 10)
china(0, 0)

怎么才做到这😕