- Made sure LDTk is an optional dependency.

- Bumped up the version number.

pyproject.toml

@@ -17,7 +17,7 @@ classifiers=[
 ]
 
 keywords = ['astronomy',  'astrophysics',  'exoplanets']
-requires-python = ">= 3.8"
+requires-python = ">= 3.10"
 readme = "README.md"
 license = {text = "GPLv2"}
 dynamic = ["version", "dependencies"]

pytransit/__init__.py

@@ -41,7 +41,7 @@
 
 """
 
-__version__ = '2.6.11'
+__version__ = '2.6.12'
 
 # Generic
 # -------
@@ -74,8 +74,10 @@
 # LDTk limb darkening for the Swift model
 # ---------------------------------------
 
-from .models.ldtkldm import LDTkLDModel #, LDTkLD
-from .models.ldtkldm import LDTkLD
+try:
+    from .models.ldtkldm import LDTkLDModel, LDTkLD
+except ImportError:
+    pass
 
 # Log posterior functions
 # -----------------------

pytransit/lpf/lpf.py

@@ -536,6 +536,9 @@ def add_ldtk_prior(self, teff: tuple, logg: tuple, z: tuple, passbands: tuple,
             raise DeprecationWarning(
                 'Passing passbands by name has been deprecated, they should be now Filter instances.')
 
+        if not with_ldtk:
+            raise ModuleNotFoundError('Could not import LDTk, cannot add an LDTk prior.')
+
         self.ldsc = LDPSetCreator(teff, logg, z, list(passbands))
         self.ldps = self.ldsc.create_profiles(1000)
         self.ldps.resample_linear_z()

pytransit/lpf/tess/ctesslpf.py

@@ -25,7 +25,6 @@
 from numpy import repeat, inf, where, newaxis, squeeze, atleast_2d, isfinite, concatenate, zeros
 from numpy.random import uniform
 from uncertainties import ufloat, UFloat
-from ldtk import tess
 
 from ..tesslpf import TESSLPF
 from ...param import UniformPrior as UP, NormalPrior as NP, PParameter

pytransit/lpf/tess/tmpclpf.py

@@ -34,9 +34,7 @@
 from pytransit.lpf.tesslpf import TESSLPF, downsample_time
 from pytransit.orbits import as_from_rhop, i_from_ba
 from pytransit.param import UniformPrior as UP, NormalPrior as NP, PParameter, GParameter
-from ldtk import tess
 from pytransit.utils.misc import fold
-from scipy.ndimage import label
 from uncertainties import ufloat, UFloat
 
 

pytransit/lpf/tesslpf.py

@@ -103,7 +103,7 @@ def add_ldtk_prior(teff, logg, z):
         if with_ldtk:
             super().add_ldtk_prior(teff, logg, z, passbands=(tess,))
         else:
-            raise ImportError('Could not import LDTk, cannot add an LDTk prior.')
+            raise ModuleNotFoundError('Could not import LDTk, cannot add an LDTk prior.')
 
     def plot_individual_transits(self, solution: str = 'de', pv: ndarray = None, ncols: int = 2, n_samples: int = 100,
                                  xlim: tuple = None, ylim: tuple = None, axs=None, figsize: tuple = None,

pytransit/models/ldtkldm.py

@@ -17,9 +17,8 @@
 from typing import Tuple, Optional, Union
 from pathlib import Path
 
+from numpy import ndarray, linspace, meshgrid, transpose, asarray, newaxis, errstate
 from numba import njit
-from numpy import zeros, interp, pi, ndarray, linspace, meshgrid, transpose, asarray, newaxis, errstate
-from scipy.interpolate import interpn, interpnd, RegularGridInterpolator as RGI
 
 from .ldmodel import LDModel
 from .numba.ldtkldm import trilinear_interpolation_set, integrate_profiles_set

requirements.txt

@@ -14,7 +14,6 @@ setuptools
 deprecated
 seaborn
 emcee
-ldtk
 pyopencl
 corner
 celerite