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try:
from ulab import numpy as np
except:
import numpy as np
for num in range(1,4):
for start in range(-num, num+1):
for end in range(-num, num+1):
for stride in (-3, -2, -1, 1, 2, 3):
l = list(range(num))
a = np.array(l, dtype=np.int8)
sl = l[start:end:stride]
ll = len(sl)
try:
sa = list(a[start:end:stride])
except IndexError as e:
sa = str(e)
print("%2d [% d:% d:% d] %-24r %-24r%s" % (
num, start, end, stride, sl, sa, " ***" if sa != sl else ""))
a[start:end:stride] = np.ones(len(sl)) * -1
print("%2d [% d:% d:% d] %r" % (
num, start, end, stride, list(a)))
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