Programming

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====== Poetry ======


===== Basic =====

==== Create a project ====
<code>
poetry new project
</code>

ℹ️ This will create a project folder in the current path.
==== Initializing an existent project ====
<code>
poetry init
</code>

==== Install dependences ====
<code>
poetry install
</code>

Or

<code>
poetry install --no-root
</code>

==== Add package ====
<code>
poetry add package
</code>
=== From git repository ===

<code>
poetry add git+repo_url
</code>


==== Execute a command ====
<code>
poetry run command
</code>


==== List where the environment is ====
<code>
poetry env list --full-path
</code>

==== On a docker container ====

We do not need a virtual env docker. It is already isolated. So, we use
<code>
poetry config virtualenvs.create false 
</code> 
setting to turn it off.

==== Install from existing requirements ====
<code>
cat requirements.txt|xargs poetry add
</code>

===== Use =====
==== Versioning ====

For starting a new project we use:
<code>
poetry new --src <path>
</code>

It generates this structure:
<code>
.
├── pyproject.toml
├── README.rst
├── src
│   └── project_name
│       └── __init__.py
└── tests
    ├── __init__.py
    └── test_project_name.py
</code>

In that project_name.py we find the version. 

=== Check version ===
<code>
poetry version
</code>

=== Set version ===
<code>
poetry version 21.12.22
</code>

=== Bump version ===
<code>
poetry version patch
</code>
You can set: ''patch'', ''minor'', ''major''... As it says in the next table:
{{ :wiki2:python:poetry-version-table.png?400 |}}



=== Workflow ===

  * From [[https://www.nicholasnadeau.com/post/2020/8/one-version-to-rule-them-all-keeping-your-python-package-version-number-in-sync-with-git-and-poetry/]]

A typical release workflow with poetry looks something like this:

Use poetry to bump your package version: ''poetry version patch''
<code>
Bumping version from 0.1.0 to 0.1.1
</code>
Create a tag to define your release in git
<code>
git tag 0.1.1
git push --tags
</code>

Hope you used the same version number for both steps

To avoid human errors, we can link our poetry version to our git tags.

Update pyproject.toml to have a generic version placeholder
<code>
    [tool.poetry]
    version = "0.0.0"
</code>

Update your release script to fetch the git version before building the package artifacts
<code>
poetry version $(git describe --tags --abbrev=0)
poetry build
</code>

=== Get version by code ===

<code>
>>> import pkg_resources
>>> my_version = pkg_resources.get_distribution('my-package-name').version
</code>

==== Configure script ====
<code>
[tool.poetry.scripts]
dbcli = 'getfinancing.persistence.cli.dbcli:main'
</code>

===== Other tips =====
==== Show the dependences tree ====
<code>
poetry show --tree
</code>

==== Add latest package ====
<code>
poetry add pymysql@latest
</code>

==== Add from requirements.txt ====
<code>
cat requirements.txt|xargs poetry add
</code>

==== Add private repo ====

This creates the repo ''gf'' accessed with credentials.

<code>
poetry config repositories.gf https://pip.getfinancing.us/simple/
poetry config http-basic.gf $PYPI_USER $PYPI_PSW
</code>

==== Use poetry with a concrete Python version ====

<code>
poetry env use python3.9
</code>
Programming

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