比较列表中的变量

Question

I have a list of numbers:

x = [601.4, 603.6, 600.5, 605.7]

and when a value in the list is within +1 of another one, I want to set a boolean variable to true.

So this:

i = 0
while i < 4:
   if x[i] smart function here
      y = True
   else:
      y = False
   print (y)
   i = i + 1

would give out:

True
False
False
False

Answer 1

You could map the checking function f = lambda v: -1.0 <= v - x[i] <= 0.0 on the list x[0:i] + x[i+1:] that excludes the current index. Finally, check the created iterable of the map result with any .

x = [601.4, 603.6, 600.5, 605.7]

i = 0
while i < 4:
    f = lambda v: -1.0 <= v - x[i] <= 0.0
    if any(map(f, x[0:i] + x[i+1:])):
        y = True
    else:
        y = False
    print (y)
    i = i + 1

Answer 2

 x = [601.4, 603.6, 600.5, 605.7] for value in x: y = False for val in x: if val:= value: if val < value < val + 1: y = True break print(y)