add utils

utils/default.nix

@@ -0,0 +1,43 @@
+with import <nixpkgs> { };
+
+let
+  pythonPackages = python3Packages;
+in pkgs.mkShell rec {
+  name = "impurePythonEnv";
+  venvDir = "./.venv";
+  buildInputs = [
+    # A python interpreter including the 'venv' module is required to bootstrap
+    # the environment.
+    pythonPackages.python
+
+    # This execute some shell code to initialize a venv in $venvDir before
+    # dropping into the shell
+    pythonPackages.venvShellHook
+
+    # Those are dependencies that we would like to use from nixpkgs, which will
+    # add them to PYTHONPATH and thus make them accessible from within the venv.
+    pythonPackages.numpy
+    pythonPackages.requests
+    pythonPackages.numba
+
+    # In this particular example, in order to compile any binary extensions they may
+    # require, the python modules listed in the hypothetical requirements.txt need
+    # the following packages to be installed locally:
+    taglib
+    openssl
+    git
+    libxml2
+    libxslt
+    libzip
+    zlib
+  ];
+
+  # Now we can execute any commands within the virtual environment.
+  # This is optional and can be left out to run pip manually.
+  postShellHook = ''
+    export PYTHONPATH=`pwd`/$VENV/${python.sitePackages}/:$PYTHONPATH
+    export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:${pkgs.ncurses}/lib
+    pip install -r requirements.txt
+  '';
+
+}

utils/generateBlurhashes.py

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+import blurhash
+import json
+import requests
+import PIL
+
+with open('top100stations.json') as json_data:
+    allStations = json.load(json_data)
+
+r = None
+
+stationsBlurHash = {'stations': []}
+
+for station in allStations:
+
+    stationuuid = station['stationuuid']
+    stationfavicon = station['favicon']
+
+    try:
+        r = requests.get(stationfavicon, allow_redirects=True)
+    except:
+        pass
+    if (r):
+        if (r.status_code == 200):
+            open('images/'+stationuuid, 'wb').write(r.content)
+            imageFile = 'images/'+stationuuid
+            try:
+                blurHash = blurhash.encode(imageFile, x_components=4, y_components=4)
+                print(station['stationuuid'], " - ", stationfavicon, " - ", blurHash)
+                stationsBlurHash['stations'].append({stationuuid: blurHash})
+            except:
+                pass
+
+with open('stations100BlurHash.json', 'w') as the_file:
+    json.dump(stationsBlurHash, the_file)
+the_file.close()

utils/requirements.txt

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+requests
+blurhash-python