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Скачать или смотреть Understanding the unsupported operand type(s) for /: 'str' and 'float' Error in Python

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  • 2025-09-22
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Understanding the unsupported operand type(s) for /: 'str' and 'float' Error in Python
unsupported operand type(s) for /: 'str' and 'float' Pythonpython
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Описание к видео Understanding the unsupported operand type(s) for /: 'str' and 'float' Error in Python

Learn how to troubleshoot and fix the `unsupported operand type(s) for /: 'str' and 'float'` error in Python with clear explanations and examples.
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This video is based on the question https://stackoverflow.com/q/62873494/ asked by the user 'normal_human' ( https://stackoverflow.com/u/13897544/ ) and on the answer https://stackoverflow.com/a/62873504/ provided by the user 'Aleksander Ikleiw' ( https://stackoverflow.com/u/13137220/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: unsupported operand type(s) for /: 'str' and 'float' Python

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
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Understanding the unsupported operand type(s) for /: 'str' and 'float' Error in Python

When working in Python, you may encounter a common error message: unsupported operand type(s) for /: 'str' and 'float'. This error can be confusing, especially when you believe you are working with numbers rather than strings. Let’s break down the causes of this error and how to resolve it.

The Problem: What's Going Wrong?

In the code that you’re working with, you are attempting to perform a division operation involving what Python interprets as a string and a float. Here’s the relevant portion of the code:

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

In this case, the tickerPrice variable contains a value retrieved from an API, which appears to be a number but is actually formatted as a string. When you attempt to perform arithmetic operations with it, Python throws an error because it cannot divide or perform mathematical operations between a string (tickerPrice) and a float.

Let’s take a look at the output you're getting:

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

While this looks like a float, Python reads tickerPrice as a string!

The Solution: Converting Strings to Floats

To resolve the error, we need to ensure that both the variables involved in the operation are of the same type, ideally float. You can modify the percentage function as follows:

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

By explicitly converting percent and whole to floats, you ensure that the division operation will work as intended.

Key Steps to Fix the Issue:

Identify the Variable Type: Check if tickerPrice is stored as a string by using the type() function.

Conversion: Use Python’s built-in float() function to convert tickerPrice from a string to a float before any division or arithmetic operations.

Testing: Run the modified code to see if it correctly calculates 1% of tickerPrice.

Example of Corrected Code

Here's a complete snippet with the corrections applied:

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

Conclusion

The error unsupported operand type(s) for /: 'str' and 'float' can often be resolved by understanding variable types in Python and ensuring that you are performing operations between compatible types. By converting strings to floats as shown above, you can prevent this common pitfall in your coding endeavors.

If you have any further questions or run into additional errors, feel free to ask for assistance. Happy coding!

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