Solve Python error: TypeError: unsupported operand type(s) for +: 'int' and 'str'

Solution to Python error: TypeError: unsupported operand type(s) for : 'int' and 'str'

In the process of Python programming, we often encounter All kinds of errors. One of the common errors is "TypeError: unsupported operand type(s) for : 'int' and 'str'", that is, when using the plus operator, an error occurs that the int type and the str type cannot be added.

This error usually occurs when we try to add an integer type to a string type. For example:

num = 10
string = "Hello," + num
print(string)

In the above code, we are trying to add an integer type variable num to a string type variable "Hello,". However, the Python interpreter will throw a "TypeError: unsupported operand type(s) for : 'int' and 'str'" error here.

So, how to solve this problem?

There are many ways to solve this error. Below we introduce two common methods.

Method 1: Use the str() function to convert the integer type to the string type

num = 10
string = "Hello, " + str(num)
print(string)

In the above code, we used the str() function to convert the integer type The variable num is converted to string type, and then added to the string type variable "Hello, ". This avoids the problem of adding variables of different types. Eventually, we will output "Hello, 10".

Method 2: Use formatted strings for splicing

num = 10
string = "Hello, %d" % num
print(string)

In the above code, we use formatted strings and use %d to perform integer type replace. In this way, we can insert the integer type variable num into the string. Eventually, we will output "Hello, 10".

Whether you use the str() function or use formatted strings for splicing, you can solve this "TypeError: unsupported operand type(s) for : 'int' and 'str' " mistake.

In addition, it should be noted that similar errors may occur under different circumstances. For example, a similar error will occur if you try to add a variable of other types to a string type. In this case, we can also use the above solution.

To sum up, there are two ways to solve the "TypeError: unsupported operand type(s) for : 'int' and 'str'" error:

1. Use The str() function converts the integer type to the string type for concatenation.
2. Use formatted strings for splicing.

I hope that through the introduction of this article, you can understand and solve this common error more clearly. When writing Python code, pay attention to the addition operations between different types to avoid unsupported operation types. With correct handling, our programs can be made more stable and reliable.

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