diff --git a/python/lammps/core.py b/python/lammps/core.py
index 3498041454..626ece0770 100644
--- a/python/lammps/core.py
+++ b/python/lammps/core.py
@@ -18,12 +18,21 @@ from __future__ import print_function
 
 import os
 import sys
-from ctypes import *                    # lgtm [py/polluting-import]
-from os.path import dirname,abspath,join
+from ctypes import CDLL, POINTER, RTLD_GLOBAL, CFUNCTYPE, py_object, byref, cast, sizeof, \
+  create_string_buffer, c_int, c_int32, c_int64, c_double, c_void_p, c_char_p, pythonapi
+from os.path import dirname, abspath, join
 from inspect import getsourcefile
 
-from .constants import *                # lgtm [py/polluting-import]
-from .data import *                     # lgtm [py/polluting-import]
+from .constants import LAMMPS_AUTODETECT, LAMMPS_STRING, \
+  LAMMPS_INT, LAMMPS_INT_2D, LAMMPS_DOUBLE, LAMMPS_DOUBLE_2D, LAMMPS_INT64, LAMMPS_INT64_2D, \
+  LMP_STYLE_GLOBAL, LMP_STYLE_ATOM, LMP_STYLE_LOCAL, \
+  LMP_TYPE_SCALAR, LMP_TYPE_VECTOR, LMP_TYPE_ARRAY, \
+  LMP_SIZE_VECTOR, LMP_SIZE_ROWS, LMP_SIZE_COLS, \
+  LMP_ERROR_WARNING, LMP_ERROR_ONE, LMP_ERROR_ALL, LMP_ERROR_WORLD, LMP_ERROR_UNIVERSE, \
+  LMP_VAR_EQUAL, LMP_VAR_ATOM, LMP_VAR_VECTOR, LMP_VAR_STRING, \
+  get_ctypes_int
+
+from .data import NeighList
 
 # -------------------------------------------------------------------------