From b22600eb3803d0781d445e4944a19aaa9dab594d Mon Sep 17 00:00:00 2001
From: Andrew Neitsch <andrew@neitsch.ca>
Date: Wed, 23 May 2018 17:00:08 -0600
Subject: [PATCH] Add python 3.7 example

---
 presentation/presentation.tex   |  5 +++++
 python-3.7/dataclass_example.py | 14 ++++++++++++++
 python-3.7/run                  |  6 ++++++
 3 files changed, 25 insertions(+)
 create mode 100644 python-3.7/dataclass_example.py
 create mode 100755 python-3.7/run

diff --git a/presentation/presentation.tex b/presentation/presentation.tex
index 5616d78..f29f0b2 100644
--- a/presentation/presentation.tex
+++ b/presentation/presentation.tex
@@ -174,8 +174,13 @@ \section{Docker}
 docker run --rm -it --link my-tmp-db \
     mysql \
     mysql -h my-tmp-db -px
+
+docker run ... python:3.7-rc-alpine ...
+
 \end{verbatim}
 
+\pause
+
 \end{frame}
 
 \begin{frame}{Big benefit for everyone}
diff --git a/python-3.7/dataclass_example.py b/python-3.7/dataclass_example.py
new file mode 100644
index 0000000..a127dd1
--- /dev/null
+++ b/python-3.7/dataclass_example.py
@@ -0,0 +1,14 @@
+from dataclasses import dataclass
+
+@dataclass
+class InventoryItem:
+    '''Class for keeping track of an item in inventory.'''
+    name: str
+    unit_price: float
+    quantity_on_hand: int = 0
+
+    def total_cost(self) -> float:
+        return self.unit_price * self.quantity_on_hand
+
+i = InventoryItem(name='Socks', unit_price=12.75, quantity_on_hand=14)
+print(f"${i.total_cost()} worth of {i.name} on hand")
diff --git a/python-3.7/run b/python-3.7/run
new file mode 100755
index 0000000..52064c9
--- /dev/null
+++ b/python-3.7/run
@@ -0,0 +1,6 @@
+#!/bin/bash
+
+DIR="$(cd "$(dirname -- "${0}")" && pwd)"
+
+exec docker run --rm -v $DIR:/app python:3.7-rc-alpine python \
+    /app/dataclass_example.py