Getting started with lists

A function which defines a list and we will get an output list

A function that takes the input of a list of integers and the output is True if the absolute difference between adjacent numbers is strictly decreasing.

For example:

a=[9,2,5,4]

9-2=7; |2-5|=3; 5-4=1

7>3>1

Hence the output must be True.

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					def contracting(l):
    hv=0
    vc=0
    
    for i in range(1,len(l)-1):
          if(abs(l[i]-l[i-1])>abs(l[i+1]-l[i])):
           hv=hv+1
           
          else:
           vc=vc+1
           
    if(vc==0):
      return(True)
    else:
      return(False)
a=input("Enter a list of integers:")     
arr = list(map(int, a.split()))
print(contracting(arr))

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