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# Copyright 2018 The go-python Authors. All rights reserved.

# Use of this source code is governed by a BSD-style

# license that can be found in the LICENSE file.

doc="range"

a = range(255)

b = [e for e in a]

assert len(a) == len(b)

a = range(5, 100, 5)

b = [e for e in a]

assert len(a) == len(b)

a = range(100 ,0, 1)

b = [e for e in a]

assert len(a) == len(b)

a = range(100, 0, -1)

b = [e for e in a]

assert len(a) == 100

assert len(b) == 100

doc="range_get_item"

a = range(3)

assert a[2] == 2

assert a[1] == 1

assert a[0] == 0

assert a[-1] == 2

assert a[-2] == 1

assert a[-3] == 0

b = range(0, 10, 2)

assert b[4] == 8

assert b[3] == 6

assert b[2] == 4

assert b[1] == 2

assert b[0] == 0

assert b[-4] == 2

assert b[-3] == 4

assert b[-2] == 6

assert b[-1] == 8

doc="range_eq"

assert range(10) == range(0, 10)

assert not range(10) == 3

assert range(20) != range(10)

assert range(100, 200, 1) == range(100, 200)

assert range(0, 10, 3) == range(0, 12, 3)

assert range(2000, 100) == range(3, 1)

assert range(0, 10, -3) == range(0, 12, -3)

assert not range(0, 20, 2) == range(0, 20, 4)

try:

range('3', 10) == range(2)

except TypeError:

pass

else:

assert False, "TypeError not raised"

doc="range_ne"

assert range(10, 0, -3) != range(12, 0, -3)

assert range(10) != 3

assert not range(100, 200, 1) != range(100, 200)

assert range(0, 10) != range(0, 12)

assert range(0, 10) != range(0, 10, 2)

assert range(0, 20, 2) != range(0, 21, 2)

assert range(0, 20, 2) != range(0, 20, 4)

assert not range(0, 20, 3) != range(0, 20, 3)

try:

range('3', 10) != range(2)

except TypeError:

pass

else:

assert False, "TypeError not raised"

doc="range_str"

assert str(range(10)) == 'range(0, 10)'

assert str(range(10, 0, 3)) == 'range(10, 0, 3)'

assert str(range(0, 3)) == 'range(0, 3)'

assert str(range(10, 3, -2)) == 'range(10, 3, -2)'

doc="range_slice"

a = range(10)

assert a[::-1][0] == 9

assert a[::-1][9] == 0

assert a[0:3][0] == 0

assert a[0:3][2] == 2

assert a[-3:10][0] == 7

assert a[-100:13][0] == 0

assert a[-100:13][9] == 9

try:

a[0:3][3]

except IndexError:

pass

else:

assert False, "IndexError not raised"

try:

a[100:13][0]

except IndexError:

pass

else:

assert False, "IndexError not raised"

try:

a[0:3:0]

except ValueError:

pass

else:

assert False, "ValueError not raised"

doc="range_index"

class Index:

def __index__(self):

return 1

a = range(10)

b = Index()

assert a[b] == 1

assert a[b:10] == a[1:10]

assert a[10:b:-1] == a[10:1:-1]

class NonIntegerIndex:

def __index__(self):

return 1.1

a = range(10)

b = NonIntegerIndex()

try:

a[b]

except TypeError:

pass

else:

assert False, "TypeError not raised"

try:

a[b:10]

except TypeError:

pass

else:

assert False, "TypeError not raised"

doc="finished"