Final answer:The error signifies a misuse of string method 'isdigit()' on an integer in Python, due to a type mismatch in the code.Explanation:The error 'AttributeError: 'int' object has no attribute 'isdigit'' indicates that a method which is applicable only to a string object is mistakenly being called on an integer object in Python. The isdigit() method is used to check if all characters in a string are digits.Since integers are not composed of characters, they do not have this method. This error is common when there is a type mismatch in the code, where the programmer might have assumed that the variable is a string when it is actually an integer. In Python, the 'isdigit()' method is used on strings to check if all characters in the string are digits. Since this method is specific to strings, calling it on an integer object results in this error....

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