What is the cause of the TypeError: Unsupported Operand Types for Subtraction error and how can it be fixed?

TypeError: Unsupported Operand Types for Subtraction

This error message may arise when performing an operation on variables that have incompatible types. In this specific instance, the "TypeError" indicates that your code attempts to subtract an integer from a string. This operation cannot be performed because these types are not supported for subtraction.

Upon scrutinizing your code, it becomes evident that the issue stems from the assignment of the "num" variable, which receives user input through the "input()" function. While the user is prompted to provide a numerical value, "input()" retrieves it as a string. When you attempt to subtract this string from "s," the interpreter encounters an incompatibility between the "str" (string) and "int" (integer) types, leading to the reported error.

To resolve this issue, consider casting the string value obtained from "input()" to an integer before performing the subtraction. The "int()" function can be employed for this purpose. Here is a modified version of your code that addresses this error:

<code class="python">def cat_n_times(s, n):
    while n != 0:
        print(s)
        n = n - 1

text = input("What would you like the computer to repeat back to you: ")
num = int(input("How many times: "))

cat_n_times(text, num)</code>

Remember to read the documentation of the functions and methods used in your code to ensure compatibility while performing operations.

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