print [b*100+ s*10+g for b in range(1,10) for s in range(10) for g in range(10) if b==g]

print [m*100+n*10+x for m in range(1,10) for n in range(10) for x in range(10) if m==x]?

L=[]
for?x?in?range(1,10):
????for?m?in?range(10):
????????for?n?in?range(10):
???????????if?x==n:
????????????????L.append?(x*100+m*10+n)
print?L

你輸出的不是list

range(10)輸出的是0-9，range(1,10)輸出的是1-9