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dodo
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Ergänzungen zu Variablen
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Lines changed: 76 additions & 37 deletions

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‎Level_01/Level_1.ipynb‎

Lines changed: 76 additions & 37 deletions
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"cell_type": "code",
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"38"
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]
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"cell_type": "code",
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"execution_count": 27,
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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" Bei der Benennung von Variablen sollte darauf geachtet werden, kurze aber verständliche Variablennamen zu benutzen, da so klar ist wozu die Variable benutzt wird. Auf keinen Fall sollten Variablennamen wie `l`, `O` oder `I` benutzt werden, da die, je nach Schriftart, wie `0` oder `1` aussehen können."
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]
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},
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{
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"cell_type": "code",
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"execution_count": 38,
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"metadata": {
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"scrolled": false
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},
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"name": "stdout",
@@ -304,12 +313,45 @@
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}
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],
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"source": [
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"# den Typen eines Wertes kann mit type() bestimmt werden:\n",
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"# den Typen eines Wertes können wir mit type() bestimmt werden:\n",
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"print(type(\"a\"))\n",
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"print(type(2))\n",
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"print(type(4.8))"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"Python besitzt eine streng dynamische Typisierung, das heißt:\n",
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"\n",
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"1. Eine Variable kann auf Werte verschiedenen Typs zeigen.\n",
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"2. Jedes Objekt hat einen Typ.\n",
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"\n",
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"Bei jeder neuen Zuweisung wird der Wert einer Variable überschrieben, dabei kann sich der Typ des Werts ändern."
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]
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},
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"cell_type": "code",
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"execution_count": 39,
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"outputs": [
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"<class 'str'>\n",
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"<class 'int'>\n"
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]
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}
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],
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"source": [
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"s = \"String\"\n",
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"print(type(s))\n",
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"s = 4\n",
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"print(type(s))"
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]
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},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"'########## foo ##########'"
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]
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},
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"metadata": {},
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"output_type": "execute_result"
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"########## foo ##########\n"
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]
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}
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],
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"name": "stdout",
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"output_type": "stream",
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"text": [
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"Bitte etwas eingeben: 45\n",
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"45\n",
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"Bitte etwas eingeben: foo\n",
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"foo\n",
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"<class 'str'>\n"
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]
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"outputs": [
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{
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"ename": "SyntaxError",
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"evalue": "can't assign to keyword (<ipython-input-1-0cf028c02be4>, line 1)",
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"evalue": "can't assign to keyword (<ipython-input-48-0cf028c02be4>, line 1)",
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"output_type": "error",
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"traceback": [
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"\u001b[0;36m File \u001b[0;32m\"<ipython-input-1-0cf028c02be4>\"\u001b[0;36m, line \u001b[0;32m1\u001b[0m\n\u001b[0;31m True = 0 # Anzahl an Versuchen\u001b[0m\n\u001b[0m ^\u001b[0m\n\u001b[0;31mSyntaxError\u001b[0m\u001b[0;31m:\u001b[0m can't assign to keyword\n"
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"\u001b[0;36m File \u001b[0;32m\"<ipython-input-48-0cf028c02be4>\"\u001b[0;36m, line \u001b[0;32m1\u001b[0m\n\u001b[0;31m True = 0 # Anzahl an Versuchen\u001b[0m\n\u001b[0m ^\u001b[0m\n\u001b[0;31mSyntaxError\u001b[0m\u001b[0;31m:\u001b[0m can't assign to keyword\n"
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]
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"execution_count": 1,
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"outputs": [
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{

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