diff --git a/MANIFEST.in b/MANIFEST.in
index 4c6085d5..9a3b2f78 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,7 +1,3 @@
-include LICENSE AUTHORS README.rst CHANGELOG.rst .github/**/*.yml
-global-include *.json
-global-include *.csv
-global-include *.txt
+graft src
 
-prune doc*
-prune tutorials*
+include LICENSE AUTHORS README.rst CHANGELOG.rst .github/**/*.yml
diff --git a/pytest.ini b/pytest.ini
deleted file mode 100644
index a01d26ad..00000000
--- a/pytest.ini
+++ /dev/null
@@ -1,3 +0,0 @@
-[pytest]
-python_paths = . ..
-site_dirs = . ..
\ No newline at end of file
diff --git a/setup.py b/setup.py
index 5ad029dc..46526a0b 100644
--- a/setup.py
+++ b/setup.py
@@ -2,9 +2,10 @@
 # and Energy System Technology (IEE), Kassel, and University of Kassel. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
 
+import re
+
 from setuptools import find_namespace_packages
 from setuptools import setup
-import re
 
 with open('README.rst', 'rb') as f:
     install = f.read().decode('utf-8')
@@ -40,7 +41,7 @@
                  'jolando.kisse@uni-kassel.de',
     description='A pipeflow calculation tool that complements pandapower in the simulation of multi energy grids',
     long_description=long_description,
-	long_description_content_type='text/x-rst',
+    long_description_content_type='text/x-rst',
     url='http://www.pandapipes.org',
     license='BSD',
     install_requires=["pandapower>=2.11.1", "matplotlib", "shapely"],
@@ -50,7 +51,7 @@
                     "all": ["numpydoc", "sphinx", "sphinx_rtd_theme", "sphinxcontrib.bibtex",
                             "plotly", "igraph", "pytest", "pytest-xdist", "nbmake"]},
     packages=find_namespace_packages(where='src'),
-    package_dir={"":"src"},
+    package_dir={"": "src"},
     include_package_data=True,
     classifiers=classifiers
 )