Question

尝试打印包含串联字符串的变量时遇到问题，如下所示：

num1 = int(input("Choose a number: "))
num2 = int(input("Choose a second number: "))

total_int = num1 * num2
total_str = total_int, "is the answer"
print(total_str)

运行此命令（例如输入4和5）时得到的是(20, 'is the answer') 为什么还要打印括号，单引号和逗号？我了解通过执行以下操作，我可以获得没有这些结果的结果

print(num1,'multiplied by',num2,'is',total_int)

但是我想尽可能打印出存储在变量中的内容。

Answer 1

您实际上是在创建一个元组，而不是连接字符串。您可以使用+运算符：

num1 = int(input("Choose a number: "))
num2 = int(input("Choose a second number: "))

total_int = num1 * num2
total_str = str(total_int) + " is the answer"
print(total_str)

但是，格式字符串是首选选项：

total_str = "{0} is the answer".format(total_int)

对于Python 3.6 +：

total_str = f"{total_int} is the answer"

如果您确实想保留将多个参数传递给print的行为，请尝试以下操作：

num1 = int(input("Choose a number: "))
num2 = int(input("Choose a second number: "))

total_int = num1 * num2
total_str = total_int, "is the answer"
print(*total_str) # <- notice the `*` operator

Answer 2

num1 = int(input("Choose a number: "))
num2 = int(input("Choose a second number: "))

total_int = num1 * num2
print("{} is the answer".format(total_int))

{}将打印变量值.format()是您要打印的值

打印包含串联字符串的变量时出现多余字符的麻烦

2 个答案: