How to Solve TypeError: can only concatenate str (not 'int') to str in Python

Discover how to easily fix the common Python error when trying to concatenate a string with an integer. Learn the necessary steps to resolve the issue effectively.
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Fixing TypeError: can only concatenate str (not "int") to str in Python

It's a common scenario in Python programming to encounter the TypeError: can only concatenate str (not "int") to str. This error arises when you try to combine strings with integers directly, a mistake that can halt your coding progress and leave you puzzled. In this guide, we'll clarify what causes this error and guide you through the steps to fix it.

Understanding the Error

What Is the Cause?

In your code example:

[[See Video to Reveal this Text or Code Snippet]]

The error indicates that either sync_url or uri is of type int. This means that Python does not know how to concatenate an integer to a string because they are of different data types. Here are a few points to keep in mind:

Strings are sequences of characters and are wrapped in quotes.

Integers are whole numbers and do not have quotes around them.

Identifying the Problematic Variable

To resolve this issue, you need to determine which of the two variables (sync_url or uri) is an integer. You can do this with the built-in type() function to check their types:

[[See Video to Reveal this Text or Code Snippet]]

By running this, you will see whether they are of type str or int.

Solutions to Fix the Error

Wrapping the Integer with str()

Once you identify which variable is an integer (let's say it's uri), you'll need to convert it to a string before concatenation. You can achieve this using the str() function. Here's how you can modify your code:

[[See Video to Reveal this Text or Code Snippet]]

Example Scenario

Suppose you have the following values for your variables:

[[See Video to Reveal this Text or Code Snippet]]

Using the revised line of code would lead to:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By ensuring that all elements involved in string concatenation are of the same type, specifically strings, you avoid the TypeError. Remember to always check the types of your variables and convert them as needed using the str() function. This simple technique can save you time and frustration in your Python programming journey.

If you have any other questions or run into further issues, feel free to reach out. Happy coding!