concatenate.py

from typing import List, Any, Union, Type, Dict, TypeVar


def concatenate_same_type(data_list: List[Any]) -> Union[int, float, str, list, dict, None]:

    if not data_list:
        return None 

    first_type: Type = type(data_list[0])

    if not all(type(item) == first_type for item in data_list):
        raise TypeError("All items in the list must be of the same exact type.")

    #int/float
    if first_type in (int, float):
 
        return sum(data_list)

    #str
    elif first_type is str:
        return "|".join(data_list)

    # bool 
    elif first_type is bool:
        return "".join('1' if item else '0' for item in data_list)

    # list 
    elif first_type is list:
        result_list: list = []
        for sublist in data_list:

            if isinstance(sublist, list):
                result_list.extend(sublist)
            else:
                raise TypeError("Expected a list of lists, but found other type within it.")
        return result_list

    # dict 
    elif first_type is dict:
        result_dict: dict = {}
        for d in data_list:
            if isinstance(d, dict):
                result_dict.update(d) 
            else:
                raise TypeError("Expected a list of dictionaries, but found other type within it.")
        return result_dict

    # Exception for different types
    else:
        raise TypeError(f"Unsupported type for concatenation: {first_type.__name__}")

'''
You can uncomment the following to ask for a user prompt, but be careful with the formatting of the list provided.
try:
    list_provided = input("Enter a list of items to concatenate (the list should be [item1, item2, item3, ...] and elementstypes int/float, str, bool, list or dict): ")
    result = concatenate_same_type(list_provided)
    print(f"The concatenated result is {result}")

except TypeError as e:
    print(f"Error: {e}")
'''

#print(concatenate_same_type([1, 2, 'en'])) # Output: exception
print(concatenate_same_type([1, 2, 3])) # Output: 6
print(concatenate_same_type(['hello', 'world', 'python'])) # Output: hello|world|python
print(concatenate_same_type([True, False, True, True])) # Output: 1011
print(concatenate_same_type([[1, 2], [3, 4], [5, 6]])) # Output: [1, 2, 3, 4, 5, 6]
print(concatenate_same_type([{'a': 1}, {'b': 2}, {'c': 3}])) # Output: {'a': 1, 'b': 2, 'c': 3}