Here is how to do list comprehension in Python.

lower = ['a', 'b', 'c'] 
upper = [i.upper() for i in lower] 


['A', 'B', 'C']


List comprehension is commonly used when we want to convert one sequence into another. In the above example, we convert the lower list/sequence of letters into a list of uppercase letters. The list comprehension is happening in line 2.

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