get-pip.py fails with Python2

++ curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
 % Total % Received % Xferd Average Speed Time Time Time Current
 Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0
100 1883k 100 1883k 0 0 19.7M 0 --:--:-- --:--:-- --:--:-- 19.7M
++ sudo python2.7 get-pip.py
Traceback (most recent call last):
 File "get-pip.py", line 24226, in <module>
 main()
 File "get-pip.py", line 199, in main
 bootstrap(tmpdir=tmpdir)
 File "get-pip.py", line 82, in bootstrap
 from pip._internal.cli.main import main as pip_entry_point
 File "/tmp/tmpI5WQJY/pip.zip/pip/_internal/cli/main.py", line 60
 sys.stderr.write(f"ERROR: {exc}")