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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _apply_replacement(error, found_file, file_lines):
 """Apply a single replacement."""

    fixed_lines = file_lines
    fixed_lines[error[1].line - 1] = error[1].replacement
    concatenated_fixed_lines = "".join(fixed_lines)

    # Only fix one error at a time
    found_file.seek(0)
    found_file.write(concatenated_fixed_lines)
    found_file.truncate()