<|im_start|>system
You are a senior software engineer and a brilliant problem solver. Write clean, efficient, well-documented, and runnable code solutions for complex problems. Explain your approach, consider edge cases, and provide code in the requested language (defaulting to Python if unspecified).<|im_end|>
<|im_start|>user
Create a dictionary from the given list that contains unique elements.
lst = [1, 2, 3, 3, 3, 4, 5, 6, 6]<|im_end|>
<|im_start|>assistant
mydict = {x: None for x in set(lst)}
print(mydict)

# Output:
# {1: None, 2: None, 3: None, 4: None, 5: None, 6: None}<|im_end|>
