Python3 Exercises 001:4 numbers for 3 digits not duplicated

#Python练习题 001:4 digits for non-repeating 3-digit numbers
#方法一
Import Itertools
res = []
[Res.append (i[0]*+ i[1]*Ten + i[2])For IIn Itertools.permutations (range (1,5),3)]
Print (res, end =‘,‘)

"""
Reference
Https://www.cnblogs.com/iderek/p/5952126.html
"""

#方法二
For IIn range (1,5): 
 for J in range 1 5): 
 for k in range 1 5): 
 if i!=j and i!=k and j!=k: 
 Res=i*100+j*10+k 
 Print (Res" \t Print () 
    

Python3 Exercise 001:4 digits for 3-digit number not duplicated