# The lower bound is random, 1.16 is the latest version to support 3.4.
numpy >=1.11,<1.17 ; python_version == '3.4'
numpy >=1.17 ; python_version > '3.4'
# Some random known-to-work versions.
matplotlib ~=1.5 ; python_version == '3.4'
matplotlib ~=2.1 ; python_version == '3.5'
matplotlib ~=3.1 ; python_version > '3.5'