python3.5 command removed from python:3.7.4 image

output.sh

$ sudo docker run -it python:3.7.3 /bin/bash
Digest: sha256:9e0b4f32487ca1863b45383420b8db77990debae748e2e875d2f86fa9510d4a5
Status: Downloaded newer image for python:3.7.3
root@b669a8b8fe51:/# python3.5
Python 3.5.3 (default, Sep 27 2018, 17:25:39) 
[GCC 6.3.0 20170516] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 

$ sudo docker run -it python:3.7.4 /bin/bash
Digest: sha256:6eaf19442c358afc24834a6b17a3728a45c129de7703d8583392a138ecbdb092
Status: Downloaded newer image for python:3.7.4
root@6569afeef759:/# python3.5
bash: python3.5: command not found