diff --git a/src/python_wahlmodul.typ b/src/python_wahlmodul.typ
index 9f3ba6f..42302ed 100644
--- a/src/python_wahlmodul.typ
+++ b/src/python_wahlmodul.typ
@@ -416,9 +416,60 @@ if __name__ == "__main__":
 
 === Daten Lese und Schreiben
 ==== csv
+CSV Schreiben ergänzen.
+#table(columns: 1fr, [```py
+from csv import writer
+
+values = [[1, "Peter", 10], [2, "Sonja", 20]]
+
+with open("my_file.csv", "w") as open_file:
+    csv_writer = writer(open_file)
+    for row in values:
+        csv_writer.writerow(row)
+```])
+
+CSV Lesen
+#table(columns: 1fr, [```py
+from csv import reader
+
+content = []
+
+with open("my_file.csv", "r") as open_file:
+    csv_reader = reader(open_file)
+    for row in csv_reader:
+        content.append(row)
+
+print(content)
+```])
+
 ==== json
+JSON Schreiben
+#table(columns: 1fr, [```py
+import json
 
+my_dict = [{"name": "Peter", "age": 10},
+           {"name": "Sonja" , "age": 20}]
 
+with open ("my_values.json", "w") as open_file:
+    json.dump(my_dict, open_file)
+```])
+
+JSON Lesen
+#table(columns: 1fr, [```py
+import json
+
+with open("my_values.json", "r") as open_file:
+    my_read_in_dict = json.load(open_file)
+
+print(my_read_in_dict)
+```])
+
+==== File operatoren
+#table(columns: (0.1fr, 1fr),
+[`"a"`], [Append modus (Neue Zeilen werden am schluss des Dokuments angefügt)],
+[`"w"`], [Schreib modus],
+[`"r"`], [Lesen modus],
+)
 
 === Runden
 #table(columns: (1fr, 1fr),