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Turn hard-coded variables into dynamic ones without refactoring.

Project description

softshell

Turn hard-coded variables into dynamic ones without refactoring.

This module allows you to run a script where you replace hard-coded variable assignments with a list of values. For example, suppose we have some script (add.py) that looks like this:

PARAM=2

def add(x, y=2):
    return x + y

print("Adding {} to 2".format(PARAM))
print(add(PARAM))

Without changing anything in add.py, you just create some configuration (config.yml) file like the following:

---
path: add.py
configurations:
    - line_number: 1
      variable: PARAM
      value: [1, 2, 3]

And then run this:

$ softshell -f config.yml python add.py

[{'configurations': [{'line_number': 1,
                      'value': [1, 2, 3],
                      'variable': 'PARAM'}],
  'path': 'add.py'}]
Going through edit 1/3
Configuration is: [('add.py', [(1, 'PARAM', 1)])]
Logs can be found here: /var/folders/km/41mjphdd6553jdjjf32y9jkh0000gn/T/tmp7sr_umua
Going through edit 2/3
Configuration is: [('add.py', [(1, 'PARAM', 2)])]
Logs can be found here: /var/folders/km/41mjphdd6553jdjjf32y9jkh0000gn/T/tmpn5y4b48c
Going through edit 3/3
Configuration is: [('add.py', [(1, 'PARAM', 3)])]
Logs can be found here: /var/folders/km/41mjphdd6553jdjjf32y9jkh0000gn/T/tmpo4vlz7e3

You will see three separate log files, each showing the result where we set PARAM to 1, 2, 3, respectively:

$ cat /var/folders/km/41mjphdd6553jdjjf32y9jkh0000gn/T/tmp7sr_umua
Configuration is: [('add.py', [(1, 'PARAM', 1)])]
Adding 1 to 2
3
$ cat /var/folders/km/41mjphdd6553jdjjf32y9jkh0000gn/T/tmpn5y4b48c
Configuration is: [('add.py', [(1, 'PARAM', 2)])]
Adding 2 to 2
4
$ cat /var/folders/km/41mjphdd6553jdjjf32y9jkh0000gn/T/tmpo4vlz7e3
Configuration is: [('add.py', [(1, 'PARAM', 3)])]
Adding 3 to 2
5

More examples can be found in the examples directory

Installation

$ pip install softshell

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0.1

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