ValueError
is a built-in exception in Python that is raised when a function or operation receives an argument that has the right type but an inappropriate value. For example, if you try to convert a string to an integer using the int()
function, but the string contains non-numeric characters, a ValueError
will be raised.
Here’s an example.
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int('hello')
Output:
--------------------------------------------------------------------------- ValueError Traceback (most recent call last) Cell In[5], line 1 ----> 1 int('hello') ValueError: invalid literal for int() with base 10: 'hello'
In this case, the string 'hello'
is not a valid integer, so a ValueError
is raised.
The following tutorials cover some of the common ValueErrors in Python and how to resolve them with the help of some examples.