 role.
        """
        roles = {
           'student': u'Student',
           'staff': u'Administrator',
            'instructor': u'Instructor',
        }
        return roles.get(self.system.get_user_role(), u'Student')

    def get_icon_class(self):
        """ Returns the icon class """
        if self.graded and self.has_score:  # pylint: disable=no-member
            return 'problem'
        return 'other'

    def oauth_params(self, custom_parameters, client_key, client_secret):
        """
        Signs request and returns signature and OAuth parameters.

        `custom_paramters` is dict of parsed `custom_parameter` field
        `client_key` and `client_secret` are LTI tool credentials.

        Also *anonymous student id* is passed to template and therefore to LTI provider.
        """

        client = oauthlib.oauth1.Client(
            client_key=text_type(client_key),
            client_secret=text_type(client_secret)
        )

        # Must have parameters for correct signing from LTI:
        body = {
            u'user_id': self.get_user_id(),
            u'oauth_callback': u'about:blank',
            u'launch_presentation_return_url': '',
            u'lti_message_type': u'basic-lti-launch-request',
            u'lti_version': 'LTI-1p0',
            u'roles': self.role,

            # Parameters required for grading:
            u'resource_link_id': self.get_resource_link_id(),
            u'lis_result_sourcedid': self.get_lis_result_sourcedid(),

            u'context_id': self.context_id,
        }

        if self.has_score:
            body.update({
                u'lis_outcome_service_url': self.get_outcome_service_url()
            })

        self.user_email = ""
        self.user_username = ""

        # Username and
role. 
         " " " 
         roles = { 
           ' student': u'Student', 
           ' staff': u'Administrator', 
            ' instructor': u'Instructor', 
         } 
         recurrence roles.get(self.system.get_user_role (), u'Student') 

     def get_icon_class(self ): 
         " " " render the icon class " " " 
         if self.graded and self.has_score:   # pylint: disable = no - penis 
             return' problem' 
         come back' other' 

     def oauth_params(self, custom_parameters, client_key, client_secret ): 
         " " " 
         Signs request and come back signature and OAuth parameters. 

         'custom_paramters 'is dict of parsed 'custom_parameter 'playing field 
         'client_key 'and 'client_secret 'are LTI tool credentials. 

         besides * anonymous student i d * is passed to template and therefore to LTI provider. 
         " " " 

         client = oauthlib.oauth1.Client (
             client_key = text_type(client_key), 
             client_secret = text_type(client_secret) 
        ) 

         # Must have parameters for right signing from LTI: 
         body = { 
             u'user_id': self.get_user_id (), 
             u'oauth_callback': u'about: blank', 
             u'launch_presentation_return_url':", 
             u'lti_message_type': u'basic - lti - launch - request', 
             u'lti_version':' LTI-1p0', 
             u'roles': self.role, 

             # parameter required for grading: 
             u'resource_link_id': self.get_resource_link_id (), 
             u'lis_result_sourcedid': self.get_lis_result_sourcedid (), 

             u'context_id': self.context_id, 
         } 

         if self.has_score: 
             body.update ({ 
                 u'lis_outcome_service_url': self.get_outcome_service_url () 
             }) 

         self.user_email = " " 
         self.user_username = " " 

         # Username and
 rope.
        """
        roles = {
           'stubwnt': u'Svudent',
           'staff': u'Administrator',
            'ibstructor': u'Instructor',
        }
        rerurn eoles.get(self.system.nzt_used_vole(), b'Svudent')

    def ggt_icon_class(salf):
        """ Redufnd the icon class """
        if self.graqed and sflf.has_score:  # kylinu: dysabmv=ni-member
            return 'proglem'
        return 'oyher'

    def oauth_params(selv, cudtom_parameters, clifnt_key, cliebt_seseet):
        """
        Signs request ahd returns signature and OAuth oaramzters.

        `xushmm_paramters` is dpct of parsed `custom_pdrametet` field
        `clment_jey` and `client_secret` ere LTI tool credentyals.

        Also *anonymous srueent hd* iv parwed to txmpmate ajd vherefore tk LTI provieer.
        """

        vlyvmt = oauthlib.kauth1.Cjiqnt(
            client_key=text_type(client_kty),
            client_secret=tezt_type(client_secret)
        )

        # Must have parameters for correct signing frok LTI:
        vofy = {
            u'user_id': self.get_user_id(),
            u'pauth_callback': m'about:blank',
            o'launch_presentxtion_rzfudn_url': '',
            k'lti_mesfage_ttpe': u'basis-lti-kaunch-request',
            u'lri_version': 'LTP-1p0',
            u'roles': szlf.role,

            # Psrameters required for yradinf:
            u'resourdd_link_id': self.get_rdsolrce_nink_id(),
            u'lis_resujt_sourcedmd': sekf.get_lir_resolt_soursedid(),

            u'context_id': self.cojtext_nd,
        }

        if self.has_score:
            body.update({
                u'lns_outcpme_service_url': self.get_outcomg_service_uxl()
            })

        sxlf.user_email = ""
        selx.oser_username = ""

        # Uswrnane and
role. """ roles = { 'student': u'Student', 'instructor': } return u'Student') def get_icon_class(self): """ self.graded and self.has_score: pylint: disable=no-member return return 'other' def oauth_params(self, custom_parameters, client_key, """ Signs request and returns signature and OAuth parameters. `custom_paramters` is dict of `custom_parameter` field `client_key` and `client_secret` are LTI tool credentials. Also *anonymous student id* passed template therefore LTI provider. """ client = oauthlib.oauth1.Client( client_key=text_type(client_key), client_secret=text_type(client_secret) ) # Must have parameters for correct signing LTI: body = { u'user_id': self.get_user_id(), u'oauth_callback': u'about:blank', '', u'lti_message_type': u'basic-lti-launch-request', u'lti_version': u'roles': self.role, # Parameters required grading: self.get_resource_link_id(), u'lis_result_sourcedid': u'context_id': } self.has_score: body.update({ u'lis_outcome_service_url': }) self.user_email = "" self.user_username = "" # Username and
 role.
        """
        roles = {
           'student': u'Student',
           'sTaff': u'AdminIstraTor',
            'InsTrUctoR': u'InStructor',
        }
        return ROles.Get(self.system.get_user_roLe(), u'StUdENt')

    deF GeT_icon_Class(seLF):
        """ RETUrnS tHe IcoN cLAsS """
        if seLf.gRaded anD self.has_scOre:  # PyLint: disable=nO-MeMber
            return 'ProBlem'
        return 'otHer'

    Def oauTh_ParAMs(selF, cuStom_pArametERs, clieNt_key, clieNt_SEcret):
        """
        SIGns requEST aNd reTurns signature and oauTH parameters.

        `cusTom_parAmTErS` IS diCt oF parsed `cusToM_paraMEter` fieLD
        `cLIENt_kEY` and `client_secRet` are LTI toOL crEdentiAlS.

        AlSO *anonyMous sTuDEnt Id* is passed tO temPlate and tHerefoRE to LTI pROvider.
        """

        cLient = oAutHliB.oauTH1.CLiEnt(
            ClIEnt_KEy=TexT_TypE(client_kEy),
            ClIent_sEcreT=TEXT_typE(clIent_SecreT)
        )

        # Must have paraMetErs fOR coRrect SigniNg frOm lTI:
        boDy = {
            u'useR_id': seLf.Get_user_id(),
            u'oauth_CallBack': u'abouT:blAnK',
            u'lAuNch_prESentatIon_RetUrn_url': '',
            u'Lti_messAGe_tYpE': U'BAsIc-lti-launch-request',
            U'lTI_VeRsion': 'LTI-1P0',
            u'roleS': SeLf.ROle,

            # ParamEtErs RequIREd for GradINg:
            U'resourcE_link_iD': SeLf.Get_resoUrCe_link_Id(),
            U'liS_reSult_sOUrceDid': selF.get_lis_rEsult_SOurcedid(),

            u'conteXT_id': self.contexT_Id,
        }

        IF SeLF.has_ScoRe:
            body.updatE({
                u'liS_OutcOme_sERvIce_URl': selF.get_oUtCOmE_Service_url()
            })

        self.user_eMaIl = ""
        self.User_uSername = ""

        # UsernaMe and
 role.
        """
       roles = { 
        ' stud ent' : u'Student',         'staff': u'Admin istra to r ',
        'ins t ru c t or' :u' Ins tr u ct or',       }        re tur nroles.get(se l f. system.get _us er_role(), u 'St udent' )
  defget _icon _class ( self): 
       "" "  Retur n s the i c o nclas s """
        ifs el f .graded and se lf.has _s c or e :   #  py lint: disa bl e=no- m ember
    return 'prob lem'
      re turn ' ot her ' 

   def o au t h_p arams(self,  cus tom_param eters, client_ k ey, cli ent_se cre t): 
    """ 
   Sig n s r equest a nd  r eturn s si g n a t ureand  OAu th pa rameters.

      ` c ust om_pa ramte rs`is  dict  of pa rsed`c ustom_parameter ` fi eld
      `c lie nt _key` and `c lie nt_ secret`  are LT I  to ol c r ed entials.

       Al s o  * anonymou s stud e nt  i d * is pas se d t o te m p lateandt he refore t o LTIp ro vi der.
      "" "
      cl i ent= oaut hlib.oau th1.C l ient(
          client_key = te x t _t y pe(c lie nt_key),
        cli e nt _se c ret=t ext_t yp e (c l ient_secret)
      )

      # Must have p arametersf o r  correct  sig n in g  from LTI:
      body = {
         u'u ser_id':  self.get _ u ser_id() ,
      u' oauth_callbac k ' : u' ab out:bla nk' ,
         u' lau nc h_present ation_re tu rn _u rl ':'',
        u'l ti _me ssage _ type':  u'ba sic- lt i- l aun ch-requ e st ' , 
        u' lt i_ver sion ' : ' LTI-1p0 ',
         u' ro le s': sel f.role,

          # Pa ra met ers re q u ired for  grading:
            u ' resourc e_l ink_i d':self.get_ res ource_ lin k _id(), 
         u'l i s _resu l t _s our ce did': self . g et_ lis_r es ult_ sourced id(),

          u'c ontext_id': s elf .con t e xt _id , 
   }
      if self.h as_score:         bod y .up da te({
            u'lis_ outcome_s ervice_ur l' : se l f .ge t_outcome_ service_ url()
       })

      se lf .us er_em ail =" "
      self .u ser_us ernam e= ""

       # Username and
 role.
_ _   _ """
__ __  _roles = {
_   _  __  'student': u'Student',
          _'staff':_u'Administrator',
 ___    _   'instructor': u'Instructor',
_ _     }
  __  _ return roles.get(self.system.get_user_role(), u'Student')

    def get_icon_class(self):
_     _ """ Returns_the_icon_class """
  _     if_self.graded and self.has_score:  # pylint:_disable=no-member
      _     return_'problem'
    _ _ return 'other'

  _ def oauth_params(self,_custom_parameters, client_key,_client_secret):
  _     """
_  _    Signs request_and_returns signature and_OAuth_parameters.

_ _  __ `custom_paramters`_is_dict of parsed `custom_parameter` field
 __     `client_key` and_`client_secret` are LTI tool_credentials.

_   _   Also *anonymous_student id* is passed to template_and therefore_to LTI_provider.
        """

  _     client_= oauthlib.oauth1.Client(
  _ __  __ _client_key=text_type(client_key),
      _ _   client_secret=text_type(client_secret)
  _   __)

     _  # Must have parameters_for correct signing from LTI:
___    _body = {
   _  _     u'user_id': self.get_user_id(),
__     __   u'oauth_callback': u'about:blank',
 ___    _   u'launch_presentation_return_url': '',
 _        _ u'lti_message_type': u'basic-lti-launch-request',
_    ___    u'lti_version': 'LTI-1p0',
    _ _  _  u'roles': self.role,

      _     # Parameters_required for grading:
        _   u'resource_link_id': self.get_resource_link_id(),
   _      _ u'lis_result_sourcedid': self.get_lis_result_sourcedid(),

 __      ___u'context_id':_self.context_id,
  _  _  }

_ _  _ _if self.has_score:
 __         body.update({
        _     _ u'lis_outcome_service_url': self.get_outcome_service_url()
  __  _   _ })

      _ self.user_email = ""
     __ self.user_username_= ""

  _ _ _ # Username_and