add slides from this year's course

.gitignore

@@ -0,0 +1 @@
+output

Makefile

@@ -0,0 +1,26 @@
+SLIDES :=	output/Bytes\ and\ Strings.pdf \
+			output/Exceptions\ and\ Context\ managers.pdf \
+			output/Functions,\ Objects\ and\ Classes.pdf \
+			output/int\ and\ float.pdf \
+			output/The\ Language.pdf \
+			output/Modules\ and\ Packages.pdf \
+			output/Collections\ and\ Iterators.pdf \
+			output/Decorators\ and\ advanced\ Functions.pdf \
+			output/Comprehensions.pdf
+
+PANDOC_COMMAND := pandoc
+
+PANDOC_OPTIONS := -t beamer
+
+.PHONY: clean all
+
+all: $(SLIDES)
+
+clean:
+	rm -rf output
+
+output:
+	mkdir output
+
+output/%.pdf: slides/%.md img $(wildcard img/*) | output
+	$(PANDOC_COMMAND) $(PANDOC_OPTIONS) -o "$@" "$<"

README.md

@@ -0,0 +1,43 @@
+# Artemis Python Slides
+
+These are the slides intended to be used for teaching the [Python 3](https://www.python.org/)
+programming language in conjunction with the [Artemis](https://artemis-app.inf.tu-dresden.de/)
+exercises.
+
+## Building
+
+To build the slides with pandoc execute:
+
+```sh
+make all
+```
+
+The resulting PDF files are located in the `output` directory.
+
+## Slides
+
+The slides dont have to be taught in a specific order, but the following one is recommended:
+
+ 1. The Language
+
+ 2. Bytes and Strings
+
+ 3. Functions, Objects and Classes
+
+ 4. int and float 
+
+ 5. Exceptions and Context managers
+
+ 6. Modules and Packages
+
+ 7. Collections and Iterators
+
+ 8. Decorators and advanced Functions
+
+ 9. Comprehensions
+
+## Artemis exercises
+
+Almost every slide has an accompanying exercise in the [iFSR Artemis Course](https://artemis-app.inf.tu-dresden.de/courses/6/exercises).
+
+It is recommended that the exercises are started after teaching Functions, Objects and Classes. 

slides/Bytes and Strings.md

@@ -1,5 +1,7 @@
 # Bytes and Strings
 
+![Unicode Logo](img/unicode.png "https://commons.wikimedia.org/wiki/File:New_Unicode_logo.svg"){ height=75% }
+
 ---
 
 ## Strings
@@ -12,7 +14,7 @@
 
  - can be created by enclosing text in `'single'` or `"double"` quotes (literals)
 
- - the length can be determined by `len(string)`
+ - the length can be determined by [`len(string)`](https://docs.python.org/3/library/functions.html#len)
 
 ---
 
@@ -24,22 +26,31 @@
 
  - always start with a backslash and can be disabled by writing `r"string"`
 
-| Escape sequence   | Result                           |
-|-------------------|----------------------------------|
-| \n                | ASCII Linefeed                   |
-| \t                | ASCII Horizontal Tab             |
-| \\\\              | \\                               |
-| \\"               | " (works with single quotes too) |
+| Escape sequence     | Result                           |
+|---------------------|----------------------------------|
+| \\n                 | ASCII Linefeed                   |
+| \\t                 | ASCII Horizontal Tab             |
+| \\\\\\\\            | \\\\                             |
+| \\"                 | " (works with single quotes too) |
 
 ---
 
-### Concatenation
+### Operators
 
  - strings can be concatenated by adding them using `+`
 
  - doing so with [`str.join(strings)`](https://docs.python.org/3/library/stdtypes.html#str.join)
    is more efficient when concatenating many strings
 
+ - using `*` with a string and an integer repeats the string
+
+ - `==` checks whether two strings are equal 
+
+   (`!=` checks the opposite)
+
+ - do not use the `is` operator to perform value comparisions!
+
+
 ```python
     # both are equal to "Hello World!"
     "Hello" + " " + "World!"
@@ -55,30 +66,36 @@
 
  - writing `:` without specifying a value defaults to the start and end of the string
 
- - [`str.partition(seperator)`](https://docs.python.org/3/library/stdtypes.html#str.partition)
-   splits the string into the part before the first seperator, the seperator and the part after the seperator
-
- - [`str.split(seperator)`](https://docs.python.org/3/library/stdtypes.html#str.split)
-   splits the string into a list of substrings at the seperator (opposite to `str.join`)
-
 ```python
-    # retuns "Hello"
+    # returns "Hello"
     "Hello World!"[0:5]
     "Hello World!"[:5]
 
     # returns " "
     "Hello World!"[5]
+```
 
+---
+
+### Splitting
+
+ - [`str.partition(seperator)`](https://docs.python.org/3/library/stdtypes.html#str.partition)
+   splits the string into the part before the first seperator, the seperator and the part after the seperator
+
+ - [`str.split(seperator)`](https://docs.python.org/3/library/stdtypes.html#str.split)
+   splits the string into a list of substrings at the seperator (opposite to `str.join`)
+
+```python
     # returns ("Hello", " ", "World!")
-    before, seperator, after = "Hello World!".partition(" ")
+    before, seperator, after = \
+      "Hello World!".partition(" ")
 
     # returns ("Hello World!", "", "")
     "Hello World!".partition("not found")
 
     # returns ["Hell", " W", "rld!"]
     "Hello World!".split("o")
 ```
-
 ---
 
 ### Formatting
@@ -109,3 +126,10 @@
  - literals are prefixed with `b`
 
  - can be transformed into strings using [`bytes.decode(encoding)`](https://docs.python.org/3/library/stdtypes.html#bytes.decode)
+
+ - can be created from strings using [`str.encode(encoding)`](https://docs.python.org/3/library/stdtypes.html#str.encode)
+
+```python
+b"Hello W\xc3\xb6rld!".decode("utf8") == "Hello Wörld!"
+b"Hello W\xc3\xb6rld!" == "Hello Wörld!".encode("utf8")
+```