Python：如何编写一个函数来打印“高度”行，每个行都有“sym”重复的“长度”次数？

Question

下面是我的作品。我以前做过printline函数，这个问题需要调用上面的函数printline来打印每一行。我试着打印3行，每行有4个符号，但我只能得到2行，每行有12个符号。有人能帮我更正代码吗

def printline(num,sym):
    for i in range(num):
        a = (num*sym)
    return a
a = printline(5,'*')
print(a)

def printrectangle(num,height,sym):
    for i in range(height):
        a = printline(num,sym)*height
        print(a)
        return a
c = printrectangle(3,4,'*')
print(c)

Answer 1

虽然这段代码将提供您所需要的内容，但我仍然怀疑您是否错误地交换了调用printrectangle（3,4，'*'）本身中的num和height值

def printline(h,sym):
    a = h*sym # removed unnessary loop
    return a

def printrectangle(num,height,sym):
    for i in range(num): # swap height with num in your code
        a = printline(height,sym) #swap num with height in your code
        yield a

for row in printrectangle(3,4,'*'):
    print(row)