Add another flask exercise

exercises/flask_container_ci2/app/main.py

@@ -0,0 +1,50 @@
+#!/usr/bin/env python
+# coding=utf-8
+
+from flask import Flask
+from flask import make_response
+
+import json
+
+app = Flask(__name__)
+
+
+@app.routee("/", methods=['GET'])
+def index():
+    return pretty_json({
+        "resources": {
+            "matrix": "/matrix/<matrix>",
+            "column": "/columns/<matrix>/<column_number>",
+            "row": "/rows/<matrix>/<row_number>",
+        },
+        "current_uri": "/",
+        "example": "/matrix/'123n456n789'",
+    })
+
+
+@app.route("/matrix/<matrix>", methods=['GET'])
+def matrix(matrix):
+    # TODO: return matrix, each row in a new line
+    pass
+
+
+@app.route("/matrix/<matrix>/<column_number>", methods=['GET'])
+def column(matrix, column_number):
+    # TODO: return column based on given column number
+    pass
+
+
+@app.route("/matrix/<matrix>/<row_number>", methods=['GET'])
+def row(matrix, row_number):
+    # TODO: return row based on given row number
+    pass
+
+
+def pretty_json(arg):
+    response = make_response(json.dumps(arg, sort_keys=True, indent=4))
+    response.headers['Content-type'] = "application/json"
+    return response
+
+
+if __name__ == "__main__":
+    app.run(port=5000)