funny behaviour of Zmod

[Doris Behrendt]

Hello list,

could this (see below) be a bug?
When I try Zmod(17)(4).multiplicative_order(), I get 4 as expected. But not with 257 as modulus:


sage: R=Zmod(257)
sage: R(4)
4
sage: R(4).multiplicative_order()
8
sage: Zmod(257)(4).mutliplicative_order()
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
<ipython-input-55-f15ea556676b> in <module>
----> 1 Zmod(Integer(257))(Integer(4)).mutliplicative_order()

/private/var/tmp/sage-9.6-current/local/var/lib/sage/venv-python3.10.3/lib/python3.10/site-packages/sage/structure/element.pyx in sage.structure.element.Element.__getattr__ (build/cythonized/sage/structure/element.c:4832)()
492 AttributeError: 'LeftZeroSemigroup_with_category.element_class' object has no attribute 'blah_blah'
493 """
--> 494 return self.getattr_from_category(name)
495
496 cdef getattr_from_category(self, name):

/private/var/tmp/sage-9.6-current/local/var/lib/sage/venv-python3.10.3/lib/python3.10/site-packages/sage/structure/element.pyx in sage.structure.element.Element.getattr_from_category (build/cythonized/sage/structure/element.c:4944)()
505 else:
506 cls = P._abstract_element_class
--> 507 return getattr_from_other_class(self, cls, name)
508
509 def __dir__(self):

/private/var/tmp/sage-9.6-current/local/var/lib/sage/venv-python3.10.3/lib/python3.10/site-packages/sage/cpython/getattr.pyx in sage.cpython.getattr.getattr_from_other_class (build/cythonized/sage/cpython/getattr.c:2703)()
359 dummy_error_message.cls = type(self)
360 dummy_error_message.name = name
--> 361 raise AttributeError(dummy_error_message)
362 attribute = <object>attr
363 # Check for a descriptor (__get__ in Python)

AttributeError: 'sage.rings.finite_rings.integer_mod.IntegerMod_int' object has no attribute 'mutliplicative_order'
sage:

[dmo...@deductivepress.ca]

You misspelled "multiplicative": you wrote "tl" instead of "lt".  It works if you spell it correctly:
sage: Zmod(257)(4).multiplicative_order()
8

[Doris Behrendt]

arrrrrrgggghhh sorry ;-) I actually stared at it for some time  before posting to make sure that it's not a typo but did not see it

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