Update sample code for the article on the REPL (#703)

Co-authored-by: Martin Breuss <[email protected]>
Co-authored-by: Bartosz Zaczyński <[email protected]>

Author: 3 people

python-repl/.pythonstartup_v1

@@ -0,0 +1,10 @@
+from importlib import reload
+from pprint import pp
+
+try:
+    from rich import pretty, traceback
+except ModuleNotFoundError:
+    pass
+else:
+    pretty.install()
+    traceback.install(show_locals=False)

python-repl/.pythonstartup_v2

@@ -0,0 +1,20 @@
+from importlib import reload
+from pprint import pp
+
+try:
+    from dataclasses import replace
+
+    from _colorize import ANSIColors, default_theme, set_theme
+except ImportError:
+    pass
+else:
+    theme = default_theme.copy_with(
+        syntax=replace(
+            default_theme.syntax,
+            keyword=ANSIColors.BOLD_YELLOW,
+            string=ANSIColors.INTENSE_BLUE,
+            number=ANSIColors.RED,
+            comment=ANSIColors.GREY,
+        ),
+    )
+    set_theme(theme)