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  1. Practice
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  4. Plus Minus
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Plus Minus

  • sagemode + 2 comments

    Guys! I have a question related to Python, in this piece of code of yours - [x for x in numbers if x>0].

    What if I wanted to create a "new list" (which contains only negative numbers) from "numbers list" where numbers list is sorted in ascending order. I want to break the loop when x>= 0. So,

    a = [x for x in numbers if x >= 0: break]

    As you know this syntax is wrong, can you guys suggest me what is the proper way? I am new to Python.

    • capcir + 0 comments

      There is no recommended way to interrupt an "expression" loop (i.e., comprehension, filter, map, reduce). You must use a conventional loop.

      More on this, with a hack: http://stackoverflow.com/questions/9572833/break-list-comprehension

    • DarkPurple141 + 1 comment

      Depends if you really need to break.

      If not -- simply:

      ## list comprehension to get only neg numbs
a = [i for i in num_list if i < 0] 

## if u want to break
for i in num_list:
    if i >= 0:
        break
      • sahoosiddharth3 + 0 comments