add venv + pip requirements and instructions to readme

Author: wagnerjpinto

README.md

@@ -81,14 +81,25 @@ The library is based on [Numpy](https://numpy.org/), [Scipy](https://scipy.org/)
 [pytest](https://pytest.org/) is as well optional, used for the evaluation
 of the tests inside the `tests` sub-folder.
 
-The list of considered/tested versions are available in environment.yaml.
-For use with conda:
+The list of considered/tested versions are available in conda and pip formats.
 
-```bash
-conda env create -f environment.yaml
-```
+- For use with conda:
+
+  ```bash
+  conda env create -f environment.yaml
+  ```
+
+  Use `conda activate bemol` to use the env.
+
+- Using pip and venv:
+
+  ```bash
+  python3 -m venv .bemol
+  source .bemol/bin/activate
+  pip install -r requirements.txt
+  ```
 
-Use `conda activate bemol` to use the env.
+  Use `source .bemol/bin/activate` to use the env.
 
 ## Authors
 

requirements.txt

@@ -0,0 +1,31 @@
+colorama==0.4.6
+contourpy==1.3.3
+cycler==0.12.1
+exceptiongroup==1.3.1
+fonttools==4.62.1
+iniconfig==2.3.0
+kiwisolver==1.5.0
+matplotlib==3.10.1
+munkres==1.1.4
+numpy==1.26.4
+packaging==26.2
+pandas==3.0.2
+pillow==12.2.0
+pip==26.0.1
+pluggy==1.6.0
+pyparsing==3.3.2
+PySide6==6.11.0
+pytest==8.3.4
+python-dateutil==2.9.0.post0
+pytz==2026.1.post1
+PyYAML==6.0.2
+scipy==1.14.1
+setuptools==82.0.1
+shiboken6==6.11.0
+six==1.17.0
+tomli==2.4.1
+tornado==6.5.5
+typing_extensions==4.15.0
+tzdata==2026.2
+unicodedata2==17.0.1
+wheel==0.47.0