In Python, you can change every number in a list of numbers to its absolute value by calling the `abs()`

method on each element, for example, using list comprehension, like so:

numbers = [1234, -5678, 12.34, -56.78] abs_numbers = [abs(number) for number in numbers] print(abs_numbers) # [1234, 5678, 12.34, 56.78]

The code above would create a *new* list with all numbers in the list in absolute form. This is equivalent to the following, which uses `map()`

:

numbers = [1234, -5678, 12.34, -56.78] abs_numbers = list(map(lambda number: abs(number), numbers)) print(abs_numbers) # [1234, 5678, 12.34, 56.78]

However, using list comprehension provides a more readable and concise syntax. For that reason, it is generally preferred and would be the recommended way.

For completeness sake, you can also achieve the same result with a simple `for..in`

loop:

numbers = [1234, -5678, 12.34, -56.78] abs_numbers = [] for number in numbers: abs_numbers.append(abs(number)) print(abs_numbers) # [1234, 5678, 12.34, 56.78]

However, it *might not* be the best choice as it would create/overwrite a variable named "`number`

", which would persist *even* after the loop completes:

numbers = [1234, -5678, 12.34, -56.78] abs_numbers = [] for number in numbers: abs_numbers.append(abs(number)) print(number) # -56.78

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