Python: Why setuptools doesn't include my package data?

Today I created a setup.py-file and found one working script and two none working scenarios. In the two non working scenarios the `package_data` after is missing in the build. I created the build with `python setup.py sdist`. Why scenario 2 and 3 don't include my package data? Scenario 1 works: ``` import os from distutils.core import setup def find_packages(path): package_path = os.path.join(os.path.dirname(__file__), path) packages = [] for f in os.walk(package_path): directory_name = f[0] if directory_name.endswith('egg-info') or directory_name.endswith('path'): continue directory_name = directory_name.replace(package_path, '').replace('/', '.').strip() if not len(directory_name): continue if directory_name.startswith('.'): directory_name = directory_name.replace('.', '', 1) packages.append(directory_name) return packages setup ( name = 'mypkg', packages = find_packages('src'), package_dir = {'mypkg': 'src/mypkg'}, include_package_data = True, package_data = { '': ['*.txt'], 'mypkg': ['data/*.dat'], } ) ``` Scenario 2, doesn't work: ``` from setuptools import setup #, find_packages from setuptools.command import sdist setup ( name = 'mypkg', packages = ['mypkg'], package_dir = {'mypkg': 'src/mypkg'}, include_package_data = True, package_data = { '': ['*.txt'], 'mypkg': ['data/*.dat'], } ) ``` Scenario 3 doesn't work either: ``` from setuptools import find_packages from setuptools.command import sdist setup ( name = 'mypkg', packages = find_packages('src'), package_dir = {'mypkg': 'src/mypkg'}, include_package_data = True, package_data = { '': ['*.txt'], 'mypkg': ['data/*.dat'], } ) ```