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Showing content from https://www.w3schools.com/python/ref_exception_valueerror.asp below:

Python ValueError Exception

Example

A ValueError occurs if you send a string into a function that requires a number:

x = float("hello")

Try it Yourself » Definition and Usage

The ValueError exception occurs if a function receives a value of wrong type.

You can handle the ValueError in a try...except statement, see the example below.

Exception Handling Example

Handling the ValueError in a try...except statement:

try:
  x = float("hello")
except ValueError:
  print("The value has wrong format")
except:
  print("Something else went wrong")

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