How to use the pygeodesy.interns.NN function in PyGeodesy

>>> str(r)  # TG 5140 1317
           >>> r.toStr(prec=0)  # 651409,313177
        '''
        def _i2c(i):
            if i > 7:
                i += 1
            return chr(_ord_A + i)

        e, n, s = self._easting, self._northing, _COMMA_
        if prec > 0:
            E, e = divmod(e, _100km)
            N, n = divmod(n, _100km)
            E, N = int(E), int(N)
            if 0 > E or E > 6 or \
               0 > N or N > 12:
                return NN
            N = 19 - N
            EN = _i2c( N - (N % 5) + (E + 10) // 5) + \
                 _i2c((N * 5) % 25 + (E % 5))

            t = enstr2(e, n, prec, EN)
            s = sep

        elif -6 < prec < 0:
            w = 6 + 1 - prec
            t = ['%0*.*f' % (w, -prec, t) for t in (e, n)]
        else:
            t = ['%06d' % int(t) for t in (e, n)]

        return tuple(t) if s is None else s.join(t)

lat, lon = _2fll(lat, lon)
    if lat == 90:
        lat *= EPS1_2

    ix, x = _2divmod2(lon, _LonOrig_M_)
    iy, y = _2divmod2(lat, _LatOrig_M_)

    g = _str(_Digits, ix + 1, _LonLen) + _str(_Letters, iy, _LatLen)
    if p > 0:
        ix, x = divmod(x, _M3)
        iy, y = divmod(y, _M3)
        g += _digit(ix, iy, _M2)
        if p > 1:
            g += _digit(x, y, _M3)

    return NN.join(g)

    def __init__(self, x, y, z, h=0, datum=None, ll=None, name=NN):
        '''New n-vector normal to the earth's surface.

           @arg x: X component (C{meter}).
           @arg y: Y component (C{meter}).
           @arg z: Z component (C{meter}).
           @kwarg h: Optional height above model surface (C{meter}).
           @kwarg datum: Optional datum this n-vector is defined
                         within (L{Datum}).
           @kwarg ll: Optional, original latlon (C{LatLon}).
           @kwarg name: Optional name (C{str}).

           @raise TypeError: If B{C{datum}} is not a L{Datum}.

           @example:

           >>> from ellipsoidalNvector import Nvector

    def __init__(self, zone, hemisphere, easting, northing, band=NN,  # PYCHOK expected
                             datum=Datums.WGS84, falsed=True,
                             convergence=None, scale=None, name=NN):
        '''New L{Utm} UTM coordinate.

           @arg zone: Longitudinal UTM zone (C{int}, 1..60) or zone
                      with/-out (latitudinal) Band letter (C{str},
                      '01C'..'60X').
           @arg hemisphere: Northern or southern hemisphere (C{str},
                            C{'N[orth]'} or C{'S[outh]'}).
           @arg easting: Easting, see B{C{falsed}} (C{meter}).
           @arg northing: Northing, see B{C{falsed}} (C{meter}).
           @kwarg band: Optional, (latitudinal) band (C{str}, 'C'..'X').
           @kwarg datum: Optional, this coordinate's datum (L{Datum}).
           @kwarg falsed: Both B{C{easting}} and B{C{northing}} are
                          falsed (C{bool}).
           @kwarg convergence: Optional meridian convergence, bearing

return _NamedTuple.__new__(cls, Lat(lat), Lon(lon), d,
                                        Scalar(c, name=_convergence_),
                                        Scalar(s, name=_scale_))


class UtmUpsBase(_NamedBase):
    '''(INTERNAL) Base class for L{Utm} and L{Ups} coordinates.
    '''
    _band        = NN    #: (INTERNAL) Latitude band letter ('A..Z').
    _convergence = None  #: (INTERNAL) Meridian conversion (C{degrees}).
    _datum       = Datums.WGS84  #: (INTERNAL) L{Datum}.
    _easting     = 0     #: (INTERNAL) Easting, see B{C{falsed}} (C{meter}).
    _Error       = None  #: (INTERNAL) I{Must be overloaded}.
    _epsg        = None  #: (INTERNAL) toEpsg cache (L{Epsg}).
    _falsed      = True  #: (INTERNAL) Falsed easting and northing (C{bool}).
    _hemisphere  = NN    #: (INTERNAL) Hemisphere ('N' or 'S'), different from pole.
    _latlon      = None  #: (INTERNAL) toLatLon cache (C{LatLon}).
    _latlon_args = None  #: (INTERNAL) toLatLon args (varies).
    _mgrs        = None  #: (INTERNAL) toMgrs cache (L{Mgrs}.
    _northing    = 0     #: (INTERNAL) Northing, see B{C{falsed}} (C{meter}).
    _scale       = None  #: (INTERNAL) Grid scale factor (C{scalar}) or C{None}.
#   _scale0      = _K0   #: (INTERNAL) Central scale factor (C{scalar}).
    _ups         = None  #: (INTERNAL) toUps cache (L{Ups}).
    _utm         = None  #: (INTERNAL) toUtm cache (L{Utm}).

    def __init__(self, easting, northing, band=NN, datum=None, falsed=True,
                                          convergence=None, scale=None):
        '''(INTERNAL) New L{UtmUpsBase}.
        '''
        E = self._Error
        if not E:
            notOverloaded(self, '_Error')

def encode(zone, hemipole=NN, band=NN):
    '''Determine the U{EPSG} code for
       a given UTM/UPS zone number, hemisphere/pole and/or Band.

       @arg zone: The (longitudinal) UTM zone (C{int}, 1..60) or UPS
                  zone (C{int}, 0) or UTM zone with/-out (latitudinal)
                  Band letter (C{str}, '01C'..'60X') or UPS zone
                  with/-out (polar) Band letter (C{str}, '00A', '00B',
                  '00Y' or '00Z').
       @kwarg hemipole: UTM/UPS hemisphere or UPS projection top/center
                        pole (C{str}, C{'N[orth]'} or C{'S[outh]'}).
       @kwarg band: Optional (latitudinal) UTM or (polar) UPS Band
                    letter (C{str}).

       @return: C{EPSG} code (L{Epsg}).

       @raise EPSGError: Invalid B{C{zone}}, B{C{hemipole}} or B{C{band}}.

def nameof(inst):
    '''Get the name of an instance.

       @arg inst: The object (any C{type}).

       @return: The instance' name (C{str}) or C{""}.
    '''
    return getattr(inst, _name_, NN)

from math import atan, copysign, hypot, log, radians, sin, sqrt

__all__ = _ALL_LAZY.lcc
__version__ = '20.07.08'

_E0_   = 'E0'
_N0_   = 'N0'
_par1_ = 'par1'
_par2_ = 'par2'
_SP_   = 'SP'


class Conic(_NamedEnumItem):
    '''Lambert conformal conic projection (1- or 2-SP).
    '''
    _auth  =  NN      #: (INTERNAL) authorization (C{str}).
    _datum =  None    #: (INTERNAL) Datum (L{Datum}).
    _name  = 'Conic'  #: (INTERNAL) Conic (L{Conic}).

    _e  = 0  #: (INTERNAL) Ellipsoid excentricity (C{float}).
    _E0 = 0  #: (INTERNAL) False easting (C{float}).
    _k0 = 1  #: (INTERNAL) Scale factor (C{float}).
    _N0 = 0  #: (INTERNAL) false northing (C{float}).
    _SP = 0  #: (INTERNAL) 1- or 2-SP (C{int})

    _opt3 = 0  #: (INTERNAL) Optional, longitude (C{radians}).
    _par1 = 0  #: (INTERNAL) 1st std parallel (C{radians}).
    _par2 = 0  #: (INTERNAL) 2nd std parallel (C{radians}).
    _phi0 = 0  #: (INTERNAL) Origin lat (C{radians}).
    _lam0 = 0  #: (INTERNAL) Origin lon (C{radians}).

    _aF = 0  #: (INTERNAL) Precomputed F.

    def __init__(self, x, y=None, z=None, h=0, ll=None, datum=None, name=NN):
        '''New n-vector normal to the earth's surface.

           @arg x: An C{Nvector}, L{Vector3Tuple}, L{Vector4Tuple} or
                     the C{X} coordinate (C{scalar}).
           @arg y: The C{Y} coordinate (C{scalar}) if B{C{x}} C{scalar}.
           @arg z: The C{Z} coordinate (C{scalar}) if B{C{x}} C{scalar}.
           @kwarg h: Optional height above surface (C{meter}).
           @kwarg ll: Optional, original latlon (C{LatLon}).
           @kwarg datum: Optional, I{pass-thru} datum (C{Datum}).
           @kwarg name: Optional name (C{str}).

           @raise TypeError: Non-scalar B{C{x}}, B{C{y}} or B{C{z}}
                             coordinate or B{C{x}} not an C{Nvector},
                             L{Vector3Tuple} or L{Vector4Tuple}.

           @example:

    def __init__(self, latlonh0=0, lon0=0, height0=0, ecef=None, name=NN):
        '''New L{EcefCartesian} converter.

           @kwarg latlonh0: Either a C{LatLon}, an L{Ecef9Tuple} or C{scalar}
                            latitude in C{degrees} of the cartesian origin.
           @kwarg lon0: Optional C{scalar} longitude of the cartesian origin
                        in C{degrees} for C{scalar} B{C{latlonh0}}.
           @kwarg height0: Optional height of the cartesian origin in C{meter},
                           vertically above (or below) the surface of the ellipsoid.
           @kwarg ecef: An ECEF converter (L{EcefKarney}).
           @kwarg name: Optional name (C{str}).

           @raise EcefError: If B{C{latlonh0}} not C{LatLon}, L{Ecef9Tuple} or
                             C{scalar} or B{C{lon0}} not C{scalar} for C{scalar}
                             B{C{latlonh0}} or C{abs(lat)} exceeds 90°.

           @raise TypeError: Invalid B{C{ecef}}, not L{EcefKarney}.