Added Lecture 4
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.obsidian/workspace.json
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Material/3.Lösungen_Extended_Applications.slides.html
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"source": [
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"# Lösungen Extended Applications"
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"id": "0200f54c-1416-4e4b-bcb9-fbe781bff590",
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"source": [
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"### Aufgabe\n",
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"\n",
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"*3 Punkte*\n",
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"\n",
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"Schreibe einen Generator `square_count` mit einem Eingabeparameter `n`, welcher die Quadratzahlen von $1\\dots n^2$ ausgibt.\n",
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"\n",
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"Die Aufgabe gibt 0 Punkte, wenn die Funktion `square_count` kein Generator ist!\n",
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"\n",
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"Hinweis: Bei Eingabe von `5` soll die Ausgabe `1 4 9 16` sein."
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"Square Numbers from 0 to 1: 1\n",
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"Square Numbers from 0 to 2: 1 4\n",
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"Square Numbers from 0 to 3: 1 4 9\n",
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"Square Numbers from 0 to 4: 1 4 9 16\n",
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"Square Numbers from 0 to 5: 1 4 9 16 25\n"
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"source": [
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"def square_count(n: int) -> int: \n",
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" for i in range(1, n):\n",
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" yield i*i\n",
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"\n",
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"for n in range(2, 7):\n",
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" print(f\"Square Numbers from 0 to {n-1}:\", *square_count(n))"
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]
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"cell_type": "markdown",
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"tags": []
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"source": [
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"### Aufgabe\n",
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"\n",
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"*3 Punkte*\n",
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"\n",
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"Schreibe einen Generator `naturals`, welcher mit jedem Aufruf die nächste natürliche Zahl ausgibt. (Angefangen mit 1)\n",
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"\n",
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"- Es sind keine Eingabeparameter notwendig.\n",
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"- Ist die Funktion kein generator, wird diese Aufgabe mit 0 Punkten bewertet\n",
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"\n",
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"*Hinweis*: Orientiere dich an dem Beispiel `faktoriel_gen`"
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"import types"
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"execution_count": 10,
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"text": [
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"1, 2, 3, 4, 5, 6, 7, 8, 9, "
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]
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}
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],
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"source": [
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"def naturals() -> int:\n",
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" curr = 1\n",
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" while 1:\n",
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" yield curr\n",
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" curr += 1\n",
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" \n",
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"gen: types.GeneratorType = naturals()\n",
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"for i in range(1, 10):\n",
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" number: int = next(gen)\n",
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" print(number, end=', ')"
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]
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},
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{
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"cell_type": "markdown",
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"id": "7514798b-d716-4161-a0b7-a644ac8bc67a",
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"metadata": {
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"slide_type": "slide"
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"tags": []
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"source": [
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"### Aufgabe\n",
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"\n",
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"*6 Punkte*\n",
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"\n",
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"Schreiben Sie eine Dataclass `Student`\n",
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"\n",
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"- Die dataclass soll die Werte `vorname`, `nachname`, `semester` und `mat_nr` speichern, vergebe hierzu selber den !!geeigneten!! Datentypen. Mache dir dazu Gedanken ob es Sinnvoll beispielweise die Semesteranzahl als Float zu speichern.\n",
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"\n",
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"- importiere aus dem dataclasses modul die Funktion `asdict`, erstelle ein Objekt mit den Werten aus dem Beispielstundent, weiße den rückgabewert aus `asdict` aufgerufen mit dem Beispielstudenten der Variablen `stud` zu.\n",
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"\n",
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"- Die Aufgabe wird mit 0 Punkten bewertet, wenn `Student` keine dataclass ist!\n",
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"\n",
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"- Hat einer der Attribute keinen geeigneten Datentypen, führt dies nicht zu Punktabzug bei zwei oder mehr schon."
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"source": [
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"Beispielstudent:\n",
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"\n",
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"|Attribut|Wert|\n",
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"|-|-|\n",
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"|vorname|Martin|\n",
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"|nachname|Le|\n",
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"|mat_nr|520420|\n",
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"|semester|5|"
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"execution_count": 24,
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"id": "36bd4680-e75e-4db0-9442-9c62f393608e",
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"text": [
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"{'mat_nr': 520420,\n",
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" 'nachname': 'Le',\n",
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" 'semester': 5,\n",
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" 'vorname': 'Martin'}\n"
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]
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}
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],
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"source": [
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"from dataclasses import dataclass, asdict\n",
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"\n",
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"@dataclass\n",
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"class Student:\n",
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" vorname: str\n",
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" nachname: str\n",
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" mat_nr: int\n",
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" semester: int \n",
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"\n",
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"student = Student(\n",
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" vorname='Martin',\n",
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" nachname='Le',\n",
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" mat_nr=520420,\n",
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" semester=5)\n",
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"\n",
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"stud = asdict(student)\n",
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"\n",
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"from pprint import pprint\n",
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"pprint(stud, width=1)"
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]
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},
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{
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"cell_type": "markdown",
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"source": [
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"### Aufgabe\n",
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"\n",
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"*6 Punkte*\n",
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"\n",
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"Gegeben sind zwei Listen `colorn` & `colorv_hex`, welche zueinander Index Sortiert sind.\n",
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"\n",
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"Schreiben nun eine Dataclass `Color` mit den Attributen `name` & `value` und vergebe geeignete Type Hints.\n",
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"\n",
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"Erstelle danach eine Liste, welche die Werte aus `colorn` & `colorv_hex` in die Dataclass `Color` umwandeln, und speicher die Liste in der variablen `colors`.\n"
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"colorn = ['RED', 'GREEN', 'BLUE', 'YELLOW', 'PURPLE']\n",
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"colorv_hex = ['#FF0000', '#00FF00', '#0000FF', '#FFFF00', '#FF00FF']"
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"[Color(name='RED', value='#FF0000'),\n",
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" Color(name='GREEN', value='#00FF00'),\n",
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" Color(name='BLUE', value='#0000FF'),\n",
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" Color(name='YELLOW', value='#FFFF00'),\n",
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" Color(name='PURPLE', value='#FF00FF')]\n"
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"source": [
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"colors = None\n",
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"\n",
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"@dataclass\n",
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"class Color:\n",
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" name: str\n",
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" value: str\n",
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"\n",
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"colors = [Color(n, w) for n, w in zip(colorn, colorv_hex)]\n",
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" \n",
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"pprint(colors)"
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]
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