Solution to the Python API Challenge

.gitignore

@@ -1 +1,3 @@
 *.pyc
+api-challenge/
+.idea

departures/filtered_departures.csv

@@ -0,0 +1,25 @@
+name,start_date,finish_date,category
+New Zealand Encompassed,2018-08-31,2018-09-10,Adventurous
+Cambodia Overland,2018-08-31,2018-09-10,Adventurous
+Peru Overland,2018-08-31,2018-09-10,Adventurous
+Vietnam Safari,2018-08-31,2018-09-10,Adventurous
+Brazil Trek,2018-08-31,2018-09-10,Adventurous
+Cambodia Multisport,2018-08-31,2018-09-10,Adventurous
+Morocco Safari,2018-08-31,2018-09-10,Adventurous
+Galapagos Encompassed,2018-08-31,2018-09-10,Adventurous
+Galapagos Discovery,2018-08-31,2018-09-10,Adventurous
+New Zealand Adventure,2018-08-31,2018-09-10,Adventurous
+Galapagos Trek,2018-08-31,2018-09-10,Adventurous
+Brazil Encompassed,2018-08-31,2018-09-10,Adventurous
+Kenya Express,2018-08-31,2018-09-10,Adventurous
+Galapagos Discovery,2018-08-31,2018-09-10,Adventurous
+Sri Lanka Adventure,2018-08-31,2018-09-10,Adventurous
+Brazil Adventure,2018-08-31,2018-09-10,Adventurous
+Brazil Overland,2018-08-31,2018-09-10,Adventurous
+Kenya Encompassed,2018-08-31,2018-09-10,Adventurous
+Morocco Discovery,2018-08-31,2018-09-10,Adventurous
+Vietnam Trek,2018-08-31,2018-09-10,Adventurous
+New Zealand Safari,2018-08-31,2018-09-10,Adventurous
+Vietnam Encompassed,2018-08-31,2018-09-10,Adventurous
+Ethopia Express,2018-08-31,2018-09-10,Adventurous
+Sri Lanka Safari,2018-08-31,2018-09-10,Adventurous

departures/migrations/0001_initial.py

@@ -22,3 +22,5 @@ class Migration(migrations.Migration):
             ],
         ),
     ]
+
+

departures/migrations/0002_auto_20200103_1902.py

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+# Generated by Django 2.1.4 on 2020-01-03 19:02
+
+from django.db import migrations
+import json
+
+
+def getDepartures(apps, schema_editor):
+    with open("departures.json") as json_file:
+        data = json.load(json_file)
+        Departure = apps.get_model("departures", "Departure")
+        db_alias = schema_editor.connection.alias
+        for departure in data:
+            Departure.objects.using(db_alias).create(name=departure["name"], start_date=departure["start_date"], finish_date=departure["finish_date"], category=departure["category"])
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ('departures', '0001_initial'),
+    ]
+
+    operations = [
+        migrations.RunPython(getDepartures)
+    ]
+
+
+

departures/solution.py

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+import requests
+from datetime import datetime
+import csv
+
+url = "http://localhost:8000/departures"
+headers = {"Accept": "application/json"}
+
+
+### First, we need to collect all departures referenced from the API:
+
+def getDepartures(departures_list, url, headers):
+    response = requests.get(url, headers)
+    ### List of HTTP status codes: https://www.restapitutorial.com/httpstatuscodes.html
+    if response.status_code == 200:
+        data = response.json()
+        for outcome in data["results"]:
+            departures_list.append(outcome)
+
+        next_url = data["next"]
+        if next_url is None:
+            return None
+        else:
+            getDepartures(departures_list, next_url, headers)
+
+    else:
+        data = response.status_code
+        format_string = "The following error occurred: %s"
+        print(format_string % data)
+
+    return departures_list
+
+
+### Next, we need to filter down the data to only include departures
+### with a start_date after June 1st, 2018, and category = "adventurous":
+
+def filterDepartures(departures, date, category):
+    filtered_departures_list = []
+    for departure in departures:
+        ### https://www.programiz.com/python-programming/datetime/strptime
+        start_date = datetime.strptime(departure["start_date"], "%Y-%m-%d")
+        style_category = departure["category"]
+        if start_date > date and style_category == category:
+            filtered_departures_list.append(departure)
+    return filtered_departures_list
+
+
+### Finally, we need to create a CSV:
+
+def createCsv(departures):
+
+    with open("filtered_departures.csv", mode="w") as file:
+        fieldnames = ["name", "start_date", "finish_date", "category"]
+        writer = csv.DictWriter(file, fieldnames=fieldnames)
+
+        writer.writeheader()
+        for departure in departures:
+            writer.writerow(departure)
+
+
+### https://stackoverflow.com/questions/419163/what-does-if-name-main-do
+if __name__ == '__main__':
+    departures = getDepartures([], url, headers)
+    filtered_departures = filterDepartures(departures, datetime(2018, 6, 1), "Adventurous")
+    createCsv(filtered_departures)