how to remove consecutive duplicates in python code example

Example 1: python remove duplicates from a list

# HOW TO REMOVE DUPLICATES FROM A LIST:
# 1) CREATE A LIST
my_list = [1, 2, 3, 4, 5, 5, 5, 1]
# 2) CONVERT IT TO A SET AND THEN BACK INTO A LIST
my_list = list(set(my_list))
# 3) DONE! 
print(my_list) #WILL PRINT: [1, 2, 3, 4, 5]

Example 2: remove duplicates python

mylist = ["a", "b", "a", "c", "c"]
mylist = list(dict.fromkeys(mylist))

Example 3: remove consecutive duplicates python

def remove_consecutive_duplicates(_list: list):
    preprocessed_list = []
    for x in itertools.groupby(_list):
        preprocessed_list.append(x[0])

    return preprocessed_list