Add 3.9 files

3.9/dict_ior1.py

@@ -0,0 +1,6 @@
+x = {"key1": "value1 from x", "key2": "value2 from x"}
+y = {"key2": "value2 from y", "key3": "value3 from y"}
+print(x | y)
+# {'key1': 'value1 from x', 'key2': 'value2 from y', 'key3': 'value3 from y'}
+print(y | x)
+# {'key2': 'value2 from x', 'key3': 'value3 from y', 'key1': 'value1 from x'}

3.9/dict_ior2.py

@@ -0,0 +1,6 @@
+x = {"key1": "value1 from x", "key2": "value2 from x"}
+y = {"key2": "value2 from y", "key3": "value3 from y"}
+x |= y
+
+print(x)
+print(y)

3.9/hints.py

@@ -0,0 +1,9 @@
+from typing import List  # WHY?)
+
+
+def print_all(names: list[str]) -> None:
+   for name in names:
+       print("Hello", name)
+
+
+print_all(['Flyaps', 'Google', 'Apple'])

3.9/str_methods.py

@@ -0,0 +1,13 @@
+string = '12|34|56'
+
+string = string.removeprefix('34')  # No effect
+print(string)                       # 12|34|56
+
+string = string.removeprefix('12')
+print(string)                       # |34|
+
+string = string.removesuffix('56')
+print(string)                       # |34|
+
+string = string.removesuffix('34')  # No effect
+print(string)                       # |34|