In Python, it is common to encounter the error message “TypeError: can only concatenate str (not “int”) to str”. This error occurs when you try to concatenate a string and an integer value without explicitly converting the integer to a string. In this tutorial, we will discuss why this error occurs and how to fix it.

Understanding the error
The error message “TypeError: can only concatenate str (not “int”) to str” occurs when you try to concatenate a string and an integer value without explicitly converting the integer to a string. For example, consider the following code:
age = 25 print("I am " + age + " years old.")
This code will result in the following error message:
TypeError: can only concatenate str (not "int") to str
This error occurs because Python does not know how to concatenate a string and an integer value. In order to concatenate a string and an integer value, you need to convert the integer to a string using the str()
function.
How to fix the error
To fix the “TypeError: can only concatenate str (not “int”) to str” error, you need to explicitly convert the integer value to a string using the str()
function and then perform the string concatenation. Here are the steps to fix the error:
- Identify the line of code that is causing the error.
- Convert the integer value to a string using the
str()
function. - Concatenate the string and the converted integer value using the
+
operator.
Here is an example of how to fix the error:
age = 25 print("I am " + str(age) + " years old.")
In this example, we have converted the integer value age
to a string using the str()
function. We have then concatenated the string “I am ” with the converted integer value using the +
operator.
Conclusion
In conclusion, the “TypeError: can only concatenate str (not “int”) to str” error occurs when you try to concatenate a string and an integer value without explicitly converting the integer to a string. To fix this error, you need to convert the integer value to a string using the str()
function and then concatenate the string and the converted integer value using the +
operator.
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