+ 不支持的操作数类型:'int' 和 'str'
问题描述：
我目前正在学习 Python，所以我不知道发生了什么.
I am currently learning Python so I have no idea what is going on.
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))
当我运行程序时，输入 num1、num2 和 num3 的数字，它返回:回溯(最近一次调用最后一次):
When I run the program, entering in numbers for num1, num2 and num3, it returns this: Traceback (most recent call last):
TypeError: unsupported operand type(s) for +: 'int' and 'str'
答
您试图连接一个字符串和一个整数，这是不正确的.
You're trying to concatenate a string and an integer, which is incorrect.
将 print(numlist.pop(2)+" has been removed") 更改为以下任何一个:
Change print(numlist.pop(2)+" has been removed") to any of these:
显式int到str的转换:
print(str(numlist.pop(2)) + " has been removed")
使用,代替+:
print(numlist.pop(2), "has been removed")
字符串格式:
print("{} has been removed".format(numlist.pop(2)))