gistfile1.sh

Install bump package:

$ pip install bump

create a dummy version file:

$ echo 'VERSION = "0.0.0"' > version.py

bump help:

$ bump --help
usage: bump [-h] [-M] [-m] [-b] [-s SUFFIX] [-q] files [files ...]

Bumps package versions

positional arguments:
  files       Files to update

optional arguments:
  -h, --help  show this help message and exit
  -M          Bump major version
  -m          Bump minor version
  -b          Bump patch version
  -s SUFFIX   Update suffix
  -q          Quiet mode: bumps without confirmation and onlythe bumped
              version number is printed


$ cat version.py 
VERSION = "0.0.0"
$ bump -qb version.py 
0.0.1
$ bump -qb version.py 
0.0.2
$ bump -qm version.py 
0.1.0
$ bump -qb version.py 
0.1.1
$ bump -qM version.py 
1.0.0
$ bump -qm version.py 
1.1.0
$ bump -qb version.py 
1.1.1
$ bump -qb version.py 
1.1.2