Python + 不支持的操作数类型：'int' 和 'str'
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Unsupported operand type(s) for +: 'int' and 'str'
提问by
I am currently learning Python so I have no idea what is going on.
我目前正在学习 Python，所以我不知道发生了什么。
num1 = int(input("What is your first number? "))
num2 = int(input("What is your second number? "))
num3 = int(input("What is your third number? "))
numlist = [num1, num2, num3]
print(numlist)
print("Now I will remove the 3rd number")
print(numlist.pop(2) + " has been removed")
print("The list now looks like " + str(numlist))
When I run the program, entering in numbers for num1, num2 and num3, it returns this: Traceback (most recent call last):
当我运行程序时，输入 num1、num2 和 num3 的数字，它返回：Traceback（最近一次调用）：
TypeError: unsupported operand type(s) for +: 'int' and 'str'
采纳答案by Ashwini Chaudhary
You're trying to concatenate a string and an integer, which is incorrect.
您试图连接一个字符串和一个整数，这是不正确的。
Change print(numlist.pop(2)+" has been removed")to any of these:
更改print(numlist.pop(2)+" has been removed")为以下任何一项：
Explicit intto strconversion:
明确int到str转换：
print(str(numlist.pop(2)) + " has been removed")
Use ,instead of +:
使用,代替+：
print(numlist.pop(2), "has been removed")
String formatting:
字符串格式：
print("{} has been removed".format(numlist.pop(2)))
回答by Siva Cn
try,
尝试，
str_list = " ".join([str(ele) for ele in numlist])
str_list = " ".join([str(ele) for ele in numlist])
this statement will give you each element of your list in stringformat
此语句将以string格式为您提供列表中的每个元素
print("The list now looks like [{0}]".format(str_list))
print("The list now looks like [{0}]".format(str_list))
and,
和，
change print(numlist.pop(2)+" has been removed")to
更改print(numlist.pop(2)+" has been removed")为
print("{0} has been removed".format(numlist.pop(2)))
print("{0} has been removed".format(numlist.pop(2)))
as well.
以及。
