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from sage.rings.finite_rings.integer_mod import IntegerMod_abstract

class IntegerMod_centered(IntegerMod_abstract): def __init__(self, parent, value): super().__init__(parent, value)

R=Zmod(10) IntegerMod_centered(R,5)

NotImplementedError Traceback (most recent call last) NotImplementedError: must be defined in child class Exception ignored in: 'sage.rings.finite_rings.integer_mod.IntegerMod_abstract.set_from_mpz' Traceback (most recent call last): File "<string>", line 5, in __init__ NotImplementedError: must be defined in child class <repr(<__main__.integermod_centered at="" 0x7f5caf4ad7c0="">) failed: RecursionError: maximum recursion depth exceeded>

from sage.rings.finite_rings.integer_mod import IntegerMod_abstract

class IntegerMod_centered(IntegerMod_abstract):
    def __init__(self, parent, value):
        super().__init__(parent, value)
value)
 R=Zmod(10)
IntegerMod_centered(R,5)
 
R=Zmod(10)
IntegerMod_centered(R,5)
 
 
---------------------------------------------------------------------------
NotImplementedError                       Traceback (most recent call last)
NotImplementedError: must be defined in child class
Exception ignored in: 'sage.rings.finite_rings.integer_mod.IntegerMod_abstract.set_from_mpz'
Traceback (most recent call last):
  File "<string>", line 5, in __init__
NotImplementedError: must be defined in child class
<repr(<__main__.integermod_centered at="" 0x7f5caf4ad7c0="">) <repr(<__main__.IntegerMod_centered at 0x7f5caf4ad7c0>) failed: RecursionError: maximum recursion depth exceeded>exceeded>

from sage.rings.finite_rings.integer_mod import IntegerMod_abstract

class IntegerMod_centered(IntegerMod_abstract):
    def __init__(self, parent, value):
        super().__init__(parent, value)

R=Zmod(10)
IntegerMod_centered(R,5)

---------------------------------------------------------------------------
NotImplementedError                       Traceback (most recent call last)
NotImplementedError: must be defined in child class
Exception ignored in: 'sage.rings.finite_rings.integer_mod.IntegerMod_abstract.set_from_mpz'
Traceback (most recent call last):
  File "<string>", line 5, in __init__
NotImplementedError: must be defined in child class
<repr(<__main__.IntegerMod_centered at 0x7f5caf4ad7c0>) failed: RecursionError: maximum recursion depth exceeded>

from sage.rings.finite_rings.integer_mod import IntegerMod_abstract

class IntegerMod_centered(IntegerMod_abstract):
    def __init__(self, parent, value):
        super().__init__(parent, value)

R=Zmod(10)
IntegerMod_centered(R,5)

---------------------------------------------------------------------------
NotImplementedError                       Traceback (most recent call last)
NotImplementedError: must be defined in child class
Exception ignored in: 'sage.rings.finite_rings.integer_mod.IntegerMod_abstract.set_from_mpz'
Traceback (most recent call last):
  File "<string>", line 5, in __init__
NotImplementedError: must be defined in child class
<repr(<__main__.IntegerMod_centered at 0x7f5caf4ad7c0>) failed: RecursionError: maximum recursion depth exceeded>

from sage.rings.finite_rings.integer_mod import IntegerMod_abstractConsider:

from sage.rings.finite_rings.integer_mod import IntegerMod_abstract

class IntegerMod_centered(IntegerMod_abstract):
    def __init__(self, parent, value):
        super().__init__(parent, value)

R=Zmod(10)
IntegerMod_centered(R,5)

---------------------------------------------------------------------------
NotImplementedError                       Traceback (most recent call last)
NotImplementedError: must be defined in child class
Exception ignored in: 'sage.rings.finite_rings.integer_mod.IntegerMod_abstract.set_from_mpz'
Traceback (most recent call last):
  File "<string>", line 5, in __init__
NotImplementedError: must be defined in child class
<repr(<__main__.IntegerMod_centered at 0x7f5caf4ad7c0>) failed: RecursionError: maximum recursion depth exceeded>

Consider:I don't know where to start. See the example code. Even when i implement set_from_mpz i get the same error.

from sage.rings.finite_rings.integer_mod import IntegerMod_abstract

class IntegerMod_centered(IntegerMod_abstract):
    def __init__(self, parent, value):
        super().__init__(parent, value)

R=Zmod(10)
IntegerMod_centered(R,5)

---------------------------------------------------------------------------
NotImplementedError                       Traceback (most recent call last)
NotImplementedError: must be defined in child class
Exception ignored in: 'sage.rings.finite_rings.integer_mod.IntegerMod_abstract.set_from_mpz'
Traceback (most recent call last):
  File "<string>", line 5, in __init__
NotImplementedError: must be defined in child class
<repr(<__main__.IntegerMod_centered at 0x7f5caf4ad7c0>) failed: RecursionError: maximum recursion depth exceeded>

I don't know where to start. See the example code. Even when i implement set_from_mpz i get the same error.

from sage.rings.finite_rings.integer_mod import IntegerMod_abstract

class IntegerMod_centered(IntegerMod_abstract):
    def __init__(self, parent, value):
        super().__init__(parent, value)

R=Zmod(10)
IntegerMod_centered(R,5)

---------------------------------------------------------------------------
NotImplementedError                       Traceback (most recent call last)
NotImplementedError: must be defined in child class
Exception ignored in: 'sage.rings.finite_rings.integer_mod.IntegerMod_abstract.set_from_mpz'
Traceback (most recent call last):
  File "<string>", line 5, in __init__
NotImplementedError: must be defined in child class
<repr(<__main__.IntegerMod_centered at 0x7f5caf4ad7c0>) failed: RecursionError: maximum recursion depth exceeded>