Add dataframe creation

.gitignore

@@ -1,2 +1,3 @@
 */__pycache__
 Design.org
+data/*.json

app/constants.py

@@ -9,3 +9,8 @@ filenames = {
     "deconfinement-pistes-cyclables-temporaires": "cycling-paths",
     "deconfinement-parking-relais-doublement-des-places": "relay-parking",
 }
+files = {
+    "cycling-paths": "../data/cycling-paths.json",
+    "relay-parking": "../data/relay-parking.json",
+    "home-delivery": "../data/home-delivery.json",
+}

app/preprocessing.py

@@ -0,0 +1,16 @@
+from json import load
+from pandas import read_json, json_normalize, DataFrame
+from constants import files
+
+
+def open_json(dataset):
+    with open(files[dataset]) as f:
+        json = load(f)
+    return json
+
+
+def create_dataframe(dataset):
+    json = open_json(dataset)
+    data = json_normalize(data=json["records"])
+    df = DataFrame.from_dict(data=data)
+    return df