count_seq.py

def count_seq():
 n='2'
 while True:
 yield int(n)
 next_value=''

 while len(n)>0:
 first=n[0]
 count=0 

 while len(n)>0 and n[0]==first:
 count+=1
 n=n[1:]

 next_value+='{}{}'.format(count,first)

 n=next_value

if __name__ == '__main__':
 gen=count_seq()

 for i in range(10):
 print(next(gen))

"""
[실행 결과]
2
12
1112
3112
132112
1113122112
311311222112
13211321322112
1113122113121113222112
31131122211311123113322112
"""