Update setup (#15)

Update setup.py, include numpy later and string formatting

README.md

@@ -58,4 +58,3 @@ The ``downsample`` function takes an input for ``x`` and ``y`` in addition to th
     assert len(ny) == THRESHOLD
     assert nx.dtype == np.double
     assert ny.dtype == np.double
-

setup.py

@@ -2,7 +2,6 @@
 import os.path as osp
 import sys
 
-import numpy
 from setuptools import Extension, setup
 
 
@@ -14,40 +13,45 @@ def read(*parts):
     return open(osp.join(get_script_path(), *parts)).read()
 
 
-lttbc_py = Extension('lttbc', sources=['lttbc.c'],
+class numpy_get_include:
+    def __str__(self):
+        import numpy
+        return numpy.get_include()
+
+
+lttbc_py = Extension("lttbc", sources=["lttbc.c"],
                      define_macros=[
-                         ('NPY_NO_DEPRECATED_API', 'NPY_1_7_API_VERSION')],
-                     include_dirs=[numpy.get_include(),
+                         ("NPY_NO_DEPRECATED_API", "NPY_1_7_API_VERSION")],
+                     include_dirs=[numpy_get_include(),
                                    get_script_path()],
                      )
 
 setup(
     name="lttbc",
     author="European XFEL GmbH",
     use_scm_version=True,
-    include_dirs=[numpy.get_include(), get_script_path()],
     ext_modules=[lttbc_py],
     author_email="[email protected]",
     maintainer="Dennis Goeries",
     url="https://github.com/dgoeries/lttbc/",
     description="Largest triangle three buckets module for Python written in C",
     long_description=read("README.txt"),
-    long_description_content_type='text/markdown',
+    long_description_content_type="text/markdown",
     license="MIT",
-    install_requires=['numpy'],
-    setup_requires=['setuptools_scm'],
+    install_requires=["numpy"],
+    setup_requires=["setuptools_scm"],
     python_requires=">=3.5",
     classifiers=[
-        'Development Status :: 5 - Production/Stable',
-        'Environment :: Console',
-        'Intended Audience :: Developers',
-        'Intended Audience :: Science/Research',
-        'License :: OSI Approved :: MIT License',
-        'Operating System :: OS Independent',
-        'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: Implementation :: CPython',
-        'Topic :: Scientific/Engineering :: Information Analysis',
-        'Topic :: Scientific/Engineering :: Physics',
-        'Topic :: Scientific/Engineering :: Visualization',
+        "Development Status :: 5 - Production/Stable",
+        "Environment :: Console",
+        "Intended Audience :: Developers",
+        "Intended Audience :: Science/Research",
+        "License :: OSI Approved :: MIT License",
+        "Operating System :: OS Independent",
+        "Programming Language :: Python :: 3",
+        "Programming Language :: Python :: Implementation :: CPython",
+        "Topic :: Scientific/Engineering :: Information Analysis",
+        "Topic :: Scientific/Engineering :: Physics",
+        "Topic :: Scientific/Engineering :: Visualization",
     ],
 )