diff --git a/04-text-byte/locale_sort.py b/04-text-byte/locale_sort.py
new file mode 100644
index 0000000..1537c30
--- /dev/null
+++ b/04-text-byte/locale_sort.py
@@ -0,0 +1,6 @@
+import locale
+my_locale = locale.setlocale(locale.LC_COLLATE, 'pt_BR.UTF-8')
+print(my_locale)
+fruits = ['caju', 'atemoia', 'cajá', 'açaí', 'acerola']
+sorted_fruits = sorted(fruits, key=locale.strxfrm)
+print(sorted_fruits)
diff --git a/04-text-byte/stdout_check.py b/04-text-byte/stdout_check.py
new file mode 100644
index 0000000..dcef224
--- /dev/null
+++ b/04-text-byte/stdout_check.py
@@ -0,0 +1,18 @@
+import sys
+from unicodedata import name
+
+print(sys.version)
+print()
+print('sys.stdout.isatty():', sys.stdout.isatty())
+print('sys.stdout.encoding:', sys.stdout.encoding)
+print()
+
+test_chars = [
+    '\u2026',  # HORIZONTAL ELLIPSIS (in cp1252)
+    '\u221E',  # INFINITY (in cp437)
+    '\u32B7',  # CIRCLED NUMBER FORTY TWO
+]
+
+for char in test_chars:
+    print(f'Trying to output {name(char)}:')
+    print(char)