Merge pull request #493

adding environment.yml and instructions

Author: maxim-belkin

_includes/scripts/check_env.py

@@ -15,7 +15,7 @@ def check_import(packagename):
 all_checks_passed = True
 
 # Throw error if Anaconda is not default Python
-assert 'anaconda' in sys.prefix, ("Anaconda is NOT installed as your "
+assert 'anaconda' in sys.prefix.lower(), ("Anaconda is NOT installed as your "
                                   "default version of Python. Please "
                                   "make sure that is in accordance "
                                   "with the instructions provided.")
@@ -24,7 +24,7 @@ def check_import(packagename):
 assert sys.version_info.major >= 3, 'Please install Python 3!'
 
 # Packages necessary for workshop
-packages = ['numpy', 'matplotlib', 'pandas', 'jupyter', 'ggplot']
+packages = ['numpy', 'matplotlib', 'pandas', 'jupyter', 'plotnine']
 
 # Throw error if any of the necessary packages is not installed
 for p in packages:

environment.yml

@@ -0,0 +1,11 @@
+name: python-ecology-lesson
+channels:
+  - conda-forge
+  - defaults
+dependencies:
+  - python=3.8
+  - jupyter
+  - pandas
+  - numpy
+  - matplotlib
+  - plotnine

setup.md

@@ -169,6 +169,28 @@ conda install -c conda-forge plotnine
 ~~~
 {: .language-bash}
 
+### _(Alternative)_ Installing required packages with environment file
+Download the 
+[environment.yml](https://raw.githubusercontent.com/datacarpentry/python-ecology-lesson/gh-pages/environment.yml) 
+file by right-clicking the link and selecting save as.
+In the directory where you downloaded the environment.yml file run:
+
+~~~
+conda env create -f environment.yml
+~~~
+{: .language-bash}
+
+Activate the new environment with:
+~~~
+conda activate python-ecology-lesson
+~~~
+{: .language-bash}
+
+You can deactivate the environment with:
+~~~
+conda deactivate
+~~~
+{: .language-bash}
 
 ## Launch a Jupyter notebook