diff --git a/youngjin.han/learning-node02-2020.org b/youngjin.han/learning-node02-2020.org
index 40443ae..ed2ab64 100644
--- a/youngjin.han/learning-node02-2020.org
+++ b/youngjin.han/learning-node02-2020.org
@@ -1,4 +1,21 @@
 * 2020-05-15
+*** Python #1:
+**** Lecture notes
+     - Ensure that you have python3 (at least 3.6) installed
+     - Use emacs for editing source files
+     - Commit all source code to ~/ungleich-learning-circle/USERNAME/python-the-hard-way
+**** Lecture content
+     - Read thoroughly & do exercise 0 to 7
+     - Commit your source code in git
+     - Commit every time you have a task done
+       - Make a new commit in git each time you finish (part of) a task
+     - Do all exercises
+     - Notify your fellow students when you solved something
+     - Ask help to other students when you are stuck (but try to solve
+       on your own before)
+**** TODO Lecture material
+     - Available on https://cloud.ungleich.ch/s/435FyfrQyEq6oF3
+* 2020-05-15
 *** cdist #6: Glueing it together
 **** Lecture content
 ***** Objective
diff --git a/youngjin.han/python-the-hard-way/ex6.py b/youngjin.han/python-the-hard-way/ex6.py
new file mode 100644
index 0000000..d086426
--- /dev/null
+++ b/youngjin.han/python-the-hard-way/ex6.py
@@ -0,0 +1,23 @@
+types_of_people = 10 # define a value
+x = f"There are {types_of_people} types of people." # define a string with the value "types_of_people"
+
+binary = "binary" # define a string
+do_not = "don't" # define a string
+y = f"Those who know {binary} and those who {do_not}." # define a string with two string array
+
+print(x) # print "There are 10 types of people."
+print(y) # print "Those who know binary and those who don't."
+
+print(f"I said: {x}") # print "I said: There are 10 types of people."
+print(f"I also said: '{y}'") # print "I also said: 'Those who know binary and those who don't.'"
+
+hilarious = False # define a value
+
+joke_evaluation = "Isn't that joke so funny?! {}" # define a string
+
+print(joke_evaluation.format(hilarious)) # print some format string
+
+w = "This is the left side of..." # define a value
+e = "a string with a right side." # define a value
+
+print(w + e) # print a 
diff --git a/youngjin.han/python.org b/youngjin.han/python.org
index 8e5b4ce..8f36e35 100644
--- a/youngjin.han/python.org
+++ b/youngjin.han/python.org
@@ -12,4 +12,5 @@
      - none
    - ex6.py
      - + is to add two string array.
-
+   - ex7.py
+     -