two operations on each element of a list

Question

I would like to achieve the following lines in just one line:

   list1 = [abs(x) for x in list1]
   list1 = list(map(lambda x:x-1, list1))

I tried

list1 = [abs(x) and x-1  for x in list1]

even though I don't think there is such syntax, but anyway it didn't work.

Answer 1

list1 = list(map(lambda x: abs(x)-1,list1))

Interestingly this is slower than

list1 = [abs(x) - 1 for x in list1]

Anyone know why?

Answer 2

and is a logical operator in Python, it cannot be used in this condition.

why not try

[abs(x) - 1 for x in list1]