Sample code for implementing Spring Festival Gala magic in python

Hello everyone, I watched the magic trick of holding cups in the Spring Festival Gala. As I thought, there must be some math problems, so I tried to implement them in python.

Disrupt the order of spoons, chopsticks, and cups

We can implement it with the following code:

import random
kuaizi = 'Chopsticks'
shaozi = 'spoon'
beizi = 'cup'
l = [kuaizi, shaozi, beizi]
(l)

Chopsticks and left exchange

i = (kuaizi)
if i != 0:
    l[i-1], l[i] = l[i], l[i-1]

The cup and the right side interchange

i = (beizi)
if i != 2:
    l[i+1], l[i] = l[i], l[i+1]

Spoon and left interchange

i = (shaozi)
if i != 0:
    l[i-1], l[i] = l[i], l[i-1]

Pick up something

print("Left hand:",l[0],"Right hand:",l[2])

From the output, we can see that no matter how it runs, the output is holding the cup in the right hand. Let's verify it:

import random
kuaizi = 'Chopsticks'
shaozi = 'spoon'
beizi = 'cup'

j = 0
for _ in range(1000000):
    l = [kuaizi, shaozi, beizi]
    (l)
    # Interchange of chopsticks and left    i = (kuaizi)
    if i != 0:
        l[i-1], l[i] = l[i], l[i-1]
    #The cup and the right side interchange    i = (beizi)
    if i != 2:
        l[i+1], l[i] = l[i], l[i+1]
    #Spoon and left exchange    i = (shaozi)
    if i != 0:
        l[i-1], l[i] = l[i], l[i-1]
    if l[2] == beizi:
        j += 1
print(j/1000000)

The final output is 1.0, which means that the right hand will definitely pick up the cup. Can anyone explain it?

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