requirements.txt depending on python version
You can create multiple requirements files, put those common packages in a common file, and include them in another pip requirements file with -r file_path
requirements/
base.txt
python2.txt
python3.txt
python2.txt:
-r base.txt
Django==1.4 #python2 only packages
python3.txt:
-r base.txt
Django==1.5 #python3 only packages
pip install -r requirements/python2.txt
You can use the environment markers to achieve this in requirements.txt
since pip 6.0
:
SomeProject==5.4; python_version < '2.7'
SomeProject; sys_platform == 'win32'
It is supported by setuptools too by declaring extra requirements in setup.py
:
setup(
...
install_requires=[
'six',
'humanize',
],
extras_require={
':python_version == "2.7"': [
'ipaddress',
],
},
)
See also requirement specifiers. And Strings for the string versions of corresponding Python commands.