Välj rader med logik
Introduktion till datavetenskap i Python
Hillary Green-Lerman
Lead Data Scientist, Looker
Utredningen fortsätter
print(credit_records.head())
suspect location date item price
0 Kirstine Smith Groceries R Us January 6, 2018 broccoli 1.25
1 Gertrude Cox Petroleum Plaza January 6, 2018 fizzy drink 1.90
2 Fred Frequentist Groceries R Us January 6, 2018 broccoli 1.25
3 Gertrude Cox Groceries R Us January 12, 2018 broccoli 1.25
4 Kirstine Smith Clothing Club January 9, 2018 shirt 14.25
Logiska uttryck i Python
question = 12 * 8
solution = 96
question == solution
True
Booleaner: True och False
Andra typer av logik
>, >=, <, <=
price = 2.25
price > 5.00
False
Inte lika med
name = 'bayes'
name != 'Bayes'
True
Använda logik med DataFrames
credit_records.price > 20.00
0 False
1 False
2 False
3 False
4 True
5 False
...
99 True
100 True
101 True
102 False
103 False
Använda logik med DataFrames
credit_records[credit_records.price > 20.00]
suspect location date item price
28 Fred Frequentist Clothing Club January 3, 2018 dress 20.15
29 Kirstine Smith Clothing Club January 5, 2018 dress 20.15
33 Ronald Aylmer Fisher Petroleum Plaza January 7, 2018 gas 24.95
37 Fred Frequentist Clothing Club January 8, 2018 dress 20.15
40 Gertrude Cox Clothing Club January 1, 2018 dress 20.15
41 Kirstine Smith Petroleum Plaza January 5, 2018 gas 24.95
...
Använda logik med DataFrames
Använda logik med DataFrames
credit_records[credit_records.suspect == 'Ronald Aylmer Fisher']
suspect location date item price
7 Ronald Aylmer Fisher Clothing Club January 8, 2018 pants 12.05
8 Ronald Aylmer Fisher Clothing Club January 13, 2018 shirt 14.25
12 Ronald Aylmer Fisher Petroleum Plaza January 10, 2018 carwash 13.25
22 Ronald Aylmer Fisher Groceries R Us January 13, 2018 eggs 6.50
26 Ronald Aylmer Fisher Burger Mart January 8, 2018 fries 1.95
...
Nu kör vi en övning!
Introduktion till datavetenskap i Python
