DataFrames och deras metoder

Python för kalkylbladsanvändare

Chris Cardillo

Data Scientist

Där vi slutade

import pandas as pd

fruit = pd.read_excel('fruit.xlsx')

print(fruit)

simple fruit whole dataset.png

En pandas DataFrame i detalj

simple fruit whole dataset.png

En pandas DataFrame i detalj

simple fruit df cols.png

En pandas DataFrame i detalj

simple fruit df numerical column.png

En pandas DataFrame i detalj

simple fruit df object-character column.png

En pandas DataFrame i detalj

simple fruit df rows 1.png

En pandas DataFrame i detalj

simple fruit df rows 2.png

En pandas DataFrame i detalj

simple fruit df index.png

DataFrame-metoder

.head()
.info()
.describe()
.sort_values()

Metoden .head()

import pandas as pd

fruit = pd.read_excel('fruit.xlsx')

print(fruit.head())

simple fruit df head.png

Metoden .head()

import pandas as pd

fruit = pd.read_excel('fruit.xlsx')

print(fruit.head(2))

simple fruit df head with arg.png

Metoden .info()

import pandas as pd

fruit = pd.read_excel('fruit.xlsx')

print(fruit.info())

<class 'pandas.core.frame.DataFrame'>
RangeIndex: 8 entries, 0 to 7
Data columns (total 3 columns):
 #   Column     Non-Null Count  Dtype  
 --  ------     --------------  -----  
 0   name       8 non-null      object 
 1   color      8 non-null      object 
 2   price_usd  8 non-null      float64
dtypes: float64(1), object(2)
memory usage: 272.0+ bytes

Metoden .describe()

import pandas as pd

fruit = pd.read_excel('fruit.xlsx')

print(fruit.describe())

simple fruit df describe method.png

Metoden .sort_values()

import pandas as pd

fruit = pd.read_excel('fruit.xlsx')

fruit = fruit.sort_values('name')
fruit = fruit.reset_index(drop=True)

print(fruit)

simple fruit df sorted by name asc.png

Metoden .sort_values()

import pandas as pd

fruit = pd.read_excel('fruit.xlsx')

fruit = fruit.sort_values('price_usd', ascending=False)
fruit = fruit.reset_index(drop=True)

print(fruit.head(3))

simple fruit df sorted by price desc head 3.png

Nu kör vi en övning!

Python för kalkylbladsanvändare