adding requirements.txt for example_folder

[someshfengde]

adding requirements for example_folder will help us to run the application more easily ( before we have to install required modules separately)
we can now just do pip install -r requirements.txt and pip will install dependencies for us.

[jonasvdd]

Hi @someshfengde 👋🏼!

Thank you for contributing, very valid PR!
I think this can indeed be added, however I would opt to

• omit the required packages which are already listed in our pyproject.toml ⬇️

  plotly-resampler/pyproject.toml

  Lines 11 to 20 in cc951c1

  	[tool.poetry.dependencies]
  	python = "^3.7.1,<3.11"
  	jupyter-dash = ">=0.4.2"
  	plotly = "^5.6.0"
  	dash = "^2.2.0"
  	lttbc = "0.2.0"
  	orjson = "^3.6.8"
  	pandas = "^1.3.5"
  	trace-updater = ">=0.0.8"

[someshfengde]

but if we omit those packages then we cannot run get requirements from one file. Either we can add these additional requirements in .toml file or we can have it here in requirements.txt
(I've made PR just considering the dash-examples folder so there might be more libraries which required)

[jonasvdd]

Hi @someshfengde!

I discussed this with @jvdd and he was rather fond of adding these requirements to the poetry dev dependencies. (As otherwise, we would have multiple dependency management systems.) ⬇️

plotly-resampler/pyproject.toml

Lines 21 to 39 in cc951c1

	[tool.poetry.dev-dependencies]
	jupyterlab = "^3.3.0"
	numpy = "^1.21.2"
	pytest = "^6.2.5"
	pytest-cov = "^3.0.0"
	black = "^22.3.0"
	selenium = "^4.1.0"
	pytest-selenium = "^2.0.1"
	webdriver-manager = "^3.5.2"
	pyarrow = "^6.0.1"
	selenium-wire = "^4.5.6"
	pyfunctional = "^1.4.3"
	dash-bootstrap-components = "^1.0.3"
	Sphinx = "^4.4.0"
	pydata-sphinx-theme = "^0.9.0"
	sphinx-autodoc-typehints = "^1.17.0"
	ipywidgets = "^7.7.0"
	memory-profiler = "^0.60.0"
	line-profiler = "^3.5.1"

But then we made the observation that most users do not at all need / use poetry, so your requirements.txt makes a lot of sense! 😄

However, we might want to:

• loosen the (version locked) requirements of your packages
• also add the requirements of all the other example scripts/notebooks
• add the install command in the examples its readme.md

[someshfengde]

yes I've also seen using poetry first time 😄
yes sure
Should I loosen up version lock and and make PR again?

[jonasvdd]

I think you can just re-use this PR and adjust the version lock!

[someshfengde]

Yes sure

[jayceslesar]

also if you are on the latest pip you should be able to just pip install -e . or pip install .

[someshfengde]

ohh thanks

[someshfengde]

Hi I've changed and loosened up a requirements a little bit
For now it's working fine on My Linux system (both dash app and plotly-resampler is working)

We can add installation instructions in readme.md file itself ( I haven't added it not sure if we should add this or not? )

[jonasvdd]

The installation instructions can indeed be added to the readme!

[jonasvdd]

Will close this PR as this will be handled in #104