ch05: new chapter

05-record-like/meaning/demo_dc.py

@@ -0,0 +1,8 @@
+from dataclasses import dataclass
+
+@dataclass
+class DemoDataClass:
+
+    a: int           # <1>
+    b: float = 1.1   # <2>
+    c = 'spam'       # <3>

05-record-like/meaning/demo_nt.py

@@ -0,0 +1,7 @@
+import typing
+
+class DemoNTClass(typing.NamedTuple):
+
+    a: int           # <1>
+    b: float = 1.1   # <2>
+    c = 'spam'       # <3>

05-record-like/meaning/demo_plain.py

@@ -0,0 +1,5 @@
+class DemoPlainClass:
+
+    a: int           # <1>
+    b: float = 1.1   # <2>
+    c = 'spam'       # <3>