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question:Write a Python function to merge two dictionaries. If the same key appears in both dictionaries, the value from the second dictionary should overwrite the value from the first. The function should also handle the case where the values are lists, in which case it should concatenate the lists instead of overwriting. Demonstrate the function with an example.

answer:def merge_dictionaries(dict1, dict2): Merges two dictionaries. If the same key appears in both dictionaries, the value from the second dictionary will overwrite the value from the first. If the values are lists, concatenate the lists instead of overwriting. Parameters: - dict1: dict - The first dictionary - dict2: dict - The second dictionary Returns: - merged_dict: dict - The merged dictionary merged_dict = dict1.copy() # Create a copy of the first dictionary for key, value in dict2.items(): if key in merged_dict: # If the value in both dictionaries is a list, concatenate them if isinstance(merged_dict[key], list) and isinstance(value, list): merged_dict[key].extend(value) else: # Otherwise, overwrite the value from the first dictionary with the value from the second merged_dict[key] = value else: merged_dict[key] = value return merged_dict

question:Design a Python function that generates an array of `n` unique random integers within a specified range and returns this array sorted in ascending order. The function should take three parameters: the number of integers `n`, the lower bound `low`, and the upper bound `high` of the range. Ensure that the function validates the input to check if the requested number of unique integers is possible within the given range. If not, the function should raise an appropriate exception. Use numpy for generating the random integers and sorting the array.

answer:import numpy as np def generate_unique_sorted_integers(n, low, high): Generates an array of `n` unique random integers within the specified range [low, high] and returns this array sorted in ascending order. Parameters: - n (int): Number of unique random integers to generate - low (int): Lower bound of the range - high (int): Upper bound of the range Returns: - sorted_array (list): Sorted list of `n` unique random integers Raises: - ValueError: If it's not possible to generate `n` unique integers in the range if n > (high - low + 1): raise ValueError("Cannot generate more unique integers than the specified range.") unique_integers = np.random.choice(range(low, high + 1), size=n, replace=False) sorted_array = sorted(unique_integers) return sorted_array

question:Write a Python function to reverse a string and also check if it is a palindrome.

answer:def reverse_string_and_check_palindrome(s): Reverses the given string and checks if it is a palindrome. Args: s (str): The string to be reversed and checked. Returns: tuple: A tuple containing the reversed string and a boolean indicating if it is a palindrome. reversed_s = s[::-1] is_palindrome = (s == reversed_s) return reversed_s, is_palindrome

question:If I have a list of strings and I want to check if a specific substring exists in any of the strings in the list, how can I do this in Python?

answer:def contains_substring(string_list, substring): Returns True if the substring is found in any string within the string_list, otherwise False. return any(substring in string for string in string_list)