Block Method String Appending

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Your question is Block Method String Appending. Start with the requirements on the right.

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Problem

In the Ameriprise mobile app, text fragments may need to be combined before they are displayed, such as joining a label with a user-provided value. Write a function that receives two strings and returns one string containing the first input immediately followed by the second.

Formal Specification

Implement append_strings(first, second).

Input: Two strings, first and second.
Output: A string formed by concatenating first and second in that order.
Do not insert spaces, punctuation, or other characters between the inputs.
Preserve capitalization, whitespace, punctuation, and repeated characters exactly.

Constraints

0 <= len(first), len(second) <= 10^5
Inputs are valid Python strings, including Unicode characters
The output length is len(first) + len(second)

Function Signature

def append_strings(first, second):

Your solutionPython 3

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