Execute SNUSP: Difference between revisions

=={{header|Python}}==

{{trans|Go}}

<lang python>#!/usr/bin/env python3

HW = r'''

/++++!/===========?\>++.>+.+++++++..+++\

\+++\ | /+>+++++++>/ /++++++++++<<.++>./

$+++/ | \+++++++++>\ \+++++.>.+++.-----\

\==-<<<<+>+++/ /=.>.+>.--------.-/'''

def snusp(store, code):

ds = bytearray(store) # data store

dp = 0 # data pointer

cs = code.splitlines() # 2 dimensional code store

ipr, ipc = 0, 0 # instruction pointers in row and column

for r, row in enumerate(cs):

try:

ipc = row.index('$')

ipr = r

break

except ValueError:

pass

rt, dn, lt, up = range(4)

id = rt # instruction direction. starting direction is always rt

def step():

nonlocal ipr, ipc

if id&1:

ipr += 1 - (id&2)

else:

ipc += 1 - (id&2)

while ipr >= 0 and ipr < len(cs) and ipc >= 0 and ipc < len(cs[ipr]):

op = cs[ipr][ipc]

if op == '>':

dp += 1

elif op == '<':

dp -= 1

elif op == '+':

ds[dp] += 1

elif op == '-':

ds[dp] -= 1

elif op == '.':

print(chr(ds[dp]), end='')

elif op == ',':

ds[dp] = input()

elif op == '/':

id = ~id

elif op == '\\':

id ^= 1

elif op == '!':

step()

elif op == '?':

if not ds[dp]:

step()

step()

if __name__ == '__main__':

snusp(5, HW)</lang>

{{out}}

<pre>

Hello World!

</pre>