Pandas, Bölüm 1

Orta Seviye Python

Hugo Bowne-Anderson

Data Scientist at DataCamp

Tablolu veri seti örnekleri

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Tablolu veri seti örnekleri

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Tablolu veri seti örnekleri

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Python’da veri setleri

2B NumPy dizisi?
- Tek veri türü

Python’da veri setleri

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Python’da veri setleri

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pandas!
- Yüksek seviyeli veri işleme aracı
- Wes McKinney
- NumPy üzerinde kuruludur
- DataFrame

DataFrame

brics

         country    capital    area  population
BR        Brazil   Brasilia   8.516      200.40
RU        Russia     Moscow  17.100      143.50
IN         India  New Delhi   3.286     1252.00
CH         China    Beijing   9.597     1357.00
SA  South Africa   Pretoria   1.221       52.98

Sözlükten DataFrame

dict = { 
    "country":["Brazil", "Russia", "India", "China", "South Africa"],
    "capital":["Brasilia", "Moscow", "New Delhi", "Beijing", "Pretoria"],
       "area":[8.516, 17.10, 3.286, 9.597, 1.221]
 "population":[200.4, 143.5, 1252, 1357, 52.98] }

keys (sütun etiketleri)
values (veri, sütun sütun)

import pandas as pd

brics = pd.DataFrame(dict)

Sözlükten DataFrame (2)

brics

     area    capital       country  population
0   8.516   Brasilia        Brazil      200.40
1  17.100     Moscow        Russia      143.50
2   3.286  New Delhi         India     1252.00
3   9.597    Beijing         China     1357.00
4   1.221   Pretoria  South Africa       52.98

brics.index = ["BR", "RU", "IN", "CH", "SA"]

brics

      area    capital       country  population
BR   8.516   Brasilia        Brazil      200.40
RU  17.100     Moscow        Russia      143.50
IN   3.286  New Delhi         India     1252.00
CH   9.597    Beijing         China     1357.00
SA   1.221   Pretoria  South Africa       52.98

CSV dosyasından DataFrame

brics.csv

,country,capital,area,population
BR,Brazil,Brasilia,8.516,200.4
RU,Russia,Moscow,17.10,143.5
IN,India,New Delhi,3.286,1252
CH,China,Beijing,9.597,1357
SA,South Africa,Pretoria,1.221,52.98

CSV = virgülle ayrılmış değerler

CSV dosyasından DataFrame

brics.csv

,country,capital,area,population
BR,Brazil,Brasilia,8.516,200.4
RU,Russia,Moscow,17.10,143.5
IN,India,New Delhi,3.286,1252
CH,China,Beijing,9.597,1357
SA,South Africa,Pretoria,1.221,52.98

brics = pd.read_csv("path/to/brics.csv")

brics

  Unnamed: 0       country    capital    area  population
0         BR        Brazil   Brasilia   8.516      200.40
1         RU        Russia     Moscow  17.100      143.50
2         IN         India  New Delhi   3.286     1252.00
3         CH         China    Beijing   9.597     1357.00
4         SA  South Africa   Pretoria   1.221       52.98

CSV dosyasından DataFrame

brics = pd.read_csv("path/to/brics.csv", index_col = 0)

brics

         country  population      area    capital
BR        Brazil         200   8515767   Brasilia
RU        Russia         144  17098242     Moscow
IN         India        1252   3287590  New Delhi
CH         China        1357   9596961    Beijing
SA  South Africa          55   1221037   Pretoria

Haydi pratik yapalım!

Orta Seviye Python