whileÑ­»·ÓëendʹÓ÷½·¨

ceng = 1

while ceng<=5:
    count = 1
    while count <= ceng:
        print('*',end = '')    #¼ÓÈëend='', ´òÓ¡²»»»ÐÐ
        count += 1
       
    ceng += 1
    print()

´òÓ¡½á¹ûΪ：

*
**
***
****
*****