nums $=[5,9,\text{'}4\text{'},3,2,1,6,5,\text{'}7\text{'},4,3,2,6,7,8,\text{'}0\text{'},3,4,0,6,5,\text{'}3\text{'},5,6,7,8,\text{'}3\text{'},\text{'}1\text{'},5,6,7,9,3,2,5,6,\text{'}9\text{'},2,3,4,5,1]$

plus$\_$four $=[]$

for num in nums:

plus$\_$four.append$($num$+4)$