Pliki JupyterLab i testowy jakiś kod
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{
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"cells": [
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"cell_type": "markdown",
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"id": "d057e434",
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"metadata": {},
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"source": [
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"# 🧠 Dzień 1: Środowisko pracy analityka i NumPy\n"
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]
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},
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"id": "87a3a255",
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"metadata": {},
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"source": [
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"## 🔧 Konfiguracja środowiska\n",
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"Zainstaluj Anacondę i utwórz środowisko Conda o nazwie `ml-env`:\n",
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"\n",
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"```bash\n",
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"conda create -n ml-env python=3.12\n",
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"conda activate ml-env\n",
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"```\n",
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"\n",
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"Możesz także użyć `pip` do instalacji paczek:\n",
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"\n",
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"```bash\n",
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"pip install numpy pandas jupyter\n",
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"```\n"
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]
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},
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"cell_type": "markdown",
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"id": "f7fb0290",
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"metadata": {},
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"source": [
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"## 📓 Jupyter Notebook – podstawy\n",
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"- Komórki kodu i Markdown\n",
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"- Skróty klawiszowe (`Ctrl+Enter`, `Shift+Enter`, `A`, `B` itd.)\n",
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"\n",
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"**Zadanie:** Stwórz komórkę Markdown i wpisz nagłówek oraz listę punktowaną."
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]
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},
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"cell_type": "markdown",
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"id": "18bf84af",
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"metadata": {},
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"source": [
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"## 🔢 NumPy – podstawy\n",
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"- Tworzenie wektorów i macierzy\n",
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"- Operacje matematyczne\n",
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"- Wektoryzacja i broadcasting\n"
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]
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},
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"execution_count": 1,
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"id": "e3bfabbb",
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"metadata": {},
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"outputs": [
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"output_type": "stream",
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"text": [
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"[1 2 3]\n",
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"[[1 2]\n",
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" [3 4]]\n"
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],
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"source": [
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"# Przykład: stworzenie wektora i macierzy\n",
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"import numpy as np\n",
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"\n",
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"wektor = np.array([1, 2, 3])\n",
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"macierz = np.array([[1, 2], [3, 4]])\n",
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"print(wektor)\n",
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"print(macierz)"
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"id": "666b0410",
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"metadata": {},
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"source": [
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"### ✍️ Zadanie 1\n",
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"Stwórz:\n",
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"- wektor 1D z liczbami od 10 do 20\n",
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"- macierz 3x3 z losowymi liczbami całkowitymi od 0 do 100"
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]
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},
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"execution_count": 2,
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"id": "10555f08",
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"metadata": {},
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"output_type": "stream",
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"text": [
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"[10 11 12 13 14 15 16 17 18 19 20]\n",
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"[[26 84 24]\n",
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" [92 74 70]\n",
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" [91 15 14]]\n"
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}
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"source": [
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"# Zadanie 1 – Przykładowe rozwiązanie\n",
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"wektor = np.arange(10, 21)\n",
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"macierz = np.random.randint(0, 101, size=(3, 3))\n",
|
||||||
|
"print(wektor)\n",
|
||||||
|
"print(macierz)"
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|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "markdown",
|
||||||
|
"id": "3660456f",
|
||||||
|
"metadata": {},
|
||||||
|
"source": [
|
||||||
|
"### ✍️ Zadanie 2\n",
|
||||||
|
"Wykonaj dodawanie, mnożenie i dzielenie elementów dwóch tablic NumPy o takim samym rozmiarze."
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "code",
|
||||||
|
"execution_count": null,
|
||||||
|
"id": "64897ffd",
|
||||||
|
"metadata": {},
|
||||||
|
"outputs": [],
|
||||||
|
"source": [
|
||||||
|
"# Zadanie 2 – Przykładowe rozwiązanie\n",
|
||||||
|
"a = np.array([1, 2, 3])\n",
|
||||||
|
"b = np.array([4, 5, 6])\n",
|
||||||
|
"print(\"Dodawanie:\", a + b)\n",
|
||||||
|
"print(\"Mnożenie:\", a * b)\n",
|
||||||
|
"print(\"Dzielenie:\", a / b)"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "markdown",
|
||||||
|
"id": "92dc2d65",
|
||||||
|
"metadata": {},
|
||||||
|
"source": [
|
||||||
|
"## 🎯 Wektoryzacja i broadcasting\n",
|
||||||
|
"Pokażmy, jak NumPy automatycznie rozszerza kształty macierzy:\n"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "code",
|
||||||
|
"execution_count": null,
|
||||||
|
"id": "7d8b1810",
|
||||||
|
"metadata": {},
|
||||||
|
"outputs": [],
|
||||||
|
"source": [
|
||||||
|
"a = np.array([1, 2, 3])\n",
|
||||||
|
"b = 10\n",
|
||||||
|
"a * b # broadcasting mnożenia przez skalar"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "code",
|
||||||
|
"execution_count": null,
|
||||||
|
"id": "a2a2bb9d",
|
||||||
|
"metadata": {},
|
||||||
|
"outputs": [],
|
||||||
|
"source": [
|
||||||
|
"# Zadanie 3 – Przykładowe rozwiązanie\n",
|
||||||
|
"macierz = np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]])\n",
|
||||||
|
"wektor = np.array([10, 20, 30])\n",
|
||||||
|
"# Dodanie wektora do każdej kolumny\n",
|
||||||
|
"wynik1 = macierz + wektor\n",
|
||||||
|
"# Przemnożenie kolumn przez inne wartości\n",
|
||||||
|
"współczynniki = np.array([1, 2, 3])\n",
|
||||||
|
"wynik2 = macierz * współczynniki\n",
|
||||||
|
"print(\"Dodanie:\", wynik1, sep=\"\\n\")\n",
|
||||||
|
"print(\"Mnożenie:\", wynik2, sep=\"\\n\")"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "code",
|
||||||
|
"execution_count": null,
|
||||||
|
"id": "4a54d6b7",
|
||||||
|
"metadata": {},
|
||||||
|
"outputs": [],
|
||||||
|
"source": [
|
||||||
|
"# Tutaj wpisz swoje rozwiązanie\n"
|
||||||
|
]
|
||||||
|
},
|
||||||
|
{
|
||||||
|
"cell_type": "markdown",
|
||||||
|
"id": "1823dd52",
|
||||||
|
"metadata": {},
|
||||||
|
"source": [
|
||||||
|
"## ✅ Podsumowanie dnia 1\n",
|
||||||
|
"Znasz już:\n",
|
||||||
|
"- podstawy Conda, pip i środowisk\n",
|
||||||
|
"- jak korzystać z Jupyter Notebook\n",
|
||||||
|
"- jak tworzyć i przekształcać dane w NumPy\n",
|
||||||
|
"\n",
|
||||||
|
"W kolejnym dniu przejdziemy do Pandas i pobierania danych."
|
||||||
|
]
|
||||||
|
}
|
||||||
|
],
|
||||||
|
"metadata": {
|
||||||
|
"kernelspec": {
|
||||||
|
"display_name": "Python 3 (ipykernel)",
|
||||||
|
"language": "python",
|
||||||
|
"name": "python3"
|
||||||
|
},
|
||||||
|
"language_info": {
|
||||||
|
"codemirror_mode": {
|
||||||
|
"name": "ipython",
|
||||||
|
"version": 3
|
||||||
|
},
|
||||||
|
"file_extension": ".py",
|
||||||
|
"mimetype": "text/x-python",
|
||||||
|
"name": "python",
|
||||||
|
"nbconvert_exporter": "python",
|
||||||
|
"pygments_lexer": "ipython3",
|
||||||
|
"version": "3.12.9"
|
||||||
|
}
|
||||||
|
},
|
||||||
|
"nbformat": 4,
|
||||||
|
"nbformat_minor": 5
|
||||||
|
}
|
||||||
|
|
@ -27,6 +27,36 @@ Alternatywy: Google Collab, VSCode z rozszerzeniami Python i Jupyter
|
||||||
- nie będziemy korzystać bezpośrednio - bo większość szerszych frameworków korzysta z NumPy pod spodem, np Pandas
|
- nie będziemy korzystać bezpośrednio - bo większość szerszych frameworków korzysta z NumPy pod spodem, np Pandas
|
||||||
|
|
||||||
|
|
||||||
|
### Analiza danych w Pythonie
|
||||||
|
#### Podstawowe pojęcia
|
||||||
|
- macierze - tablice wierowymiarowe - zawierają elementy tego samego typu
|
||||||
|
- szeregi - jednowymiarowe tablice. mogą mieć etykiety dla indeksów
|
||||||
|
- ramki danych - tablice dwuwymiarowe, składają się z kolumn różnych typów
|
||||||
|
|
||||||
|
#### NumPy
|
||||||
|
- fukcje matematyczne
|
||||||
|
- trygonometria, geometria, statystyka
|
||||||
|
- np.random
|
||||||
|
- maski logiczne, filtrowanie danych
|
||||||
|
- broadcasting - rozszerzanie małych tablic przy operacjach na większych tablicach
|
||||||
|
|
||||||
|
Statystyka:
|
||||||
|
- np.mean(), np.median(), np.std(), np.max(), np.min()
|
||||||
|
|
||||||
|
tworzenie tablic:
|
||||||
|
- np.zeros(), np.ones(), np.arange()
|
||||||
|
|
||||||
|
z NumPy faktycznie się nie korzysta na codzień, bo Pandas to wszystko opakowywuje
|
||||||
|
|
||||||
|
#### Pandas
|
||||||
|
jest też Polars - nowy, dynamicznie rozwijany, oparty na chmurze, dużo szybszy od Pandas
|
||||||
|
|
||||||
|
Pamdas jest głównie używany do analizy danych, przygotowanie danych do machine learningu
|
||||||
|
|
||||||
|
##### Import danych do Pandas
|
||||||
|
pd.read_csv(), read_sql(), read_excel() itp itd, bardo dużo formatów
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue