PyNoneOr, Python 3

PyNoneOr

#python 3.6.9

#PyNoneOr:example of None object and or operator
#this code is created by Rezaul Hoque on May 01,2022.
#contact:jewelmrh@yahoo.com;Dhaka,Bangladesh;https://rezaulhoque.wordpress.com,https://hoquestake.blogspot.com
#note: codes shared by Rezaul Hoque on rextester are not for sale; they are created and shared to facilitate the algorithm learning process; many like Hoque use this platform to practice programming ;Rezaul hopes his contribution helps others to fine tune their learning;

#this program tries to print total payment an executive receives based on his weekly sales; if total weekly sales is above TK 1000, he receives TK 1000 plus 20% commission on his total weekly sales; if weekly sales is between below TK 1000 and TK 100,he receives TK1000; sales below TK 100 earns him nothing;

def pay(arr=None): 
    if arr is None:
           arr=[ ]
    total=sum(arr)
    if total>=100:
             if total >1000:
                       return 1000+total*0.20 
             return 1000 or 0
    #return 0

if __name__=='__main__':
    a=[100,200,300,500]
    
    show=pay(a) or 0
    
    print(show)


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