TypeError:sequenceitem0:expectedstrinstance,intfound[python]list/str的互转问题

报错发生在list -> str的过程中,
使用orderFood接收了用户输入的int值,

orderFood &＃61; list(map(int, input().split(&＃39;,&＃39;)))# list ->string
orderFoodStr &＃61; &＃39;&＃39;.join(orderFood)
print(orderFoodStr)


错报是因为join函数的对象应该是str而不能是int&＃xff0c;需要借助map()函数将list内每个元素转为str型&＃xff0c;再join().

orderFood &＃61; list(map(int, input().split(&＃39;,&＃39;)))# list ->string
orderFoodStr &＃61; &＃39;,&＃39;.join(map(str,orderFood))
print(orderFoodStr)


list -> str

list1 &＃61; [&＃39;1&＃39;,&＃39;2&＃39;,&＃39;3&＃39;]
str1 &＃61; &＃39;&＃39;.join(list1)
print(str1)list2 &＃61; [1,2,3]
str2 &＃61; &＃39;&＃39;.join(map(str,list2))
print(str2)


str->list

str &＃61; "12345"
li &＃61; list(str)
print(li)li2 &＃61; list(map(int,str)) #转为int型
print(li2)