i need write function takes list of ints nums , returns true if sequence 1, 2, 3, .. appears in list somewhere.
my approach:
def list123(nums): num = "" in nums: num += if "1,2,3" in num: return true else: return false it fails work indicating: builtins.typeerror: can't convert 'int' object str implicitly
i know if there more simpler way, rather converting list string i've done.
you error on num += i, because trying add 1 "". instead, try following:
def list123(nums): desired = [1, 2, 3] if str(desired)[1:-1] in str(nums): return true return false >>> list123([1, 2, 3, 4, 5]) true >>> list123([1, 2, 4, 3, 5]) false >>> list123([5, 1, 2, 7, 3, 1, 2, 3]) true >>> 