Списки в Python

Введение в Python для финансов

Adina Howe

Professor

Списки — квадратные скобки [ ]

months = ['January', 'February', 'March', 'April', 'May', 'June']

list_figure

months = ['January', 'February', 'March', 'April', 'May', 'June']

months[0]

'January'

months[2]

'March'

months = ['January', 'February', 'March', 'April', 'May', 'June']

months[-1]

'June'

months[-2]

'May'

Синтаксис срезов

# Includes the start and up to (but not including) the end
mylist[startAt:endBefore]

Пример

months = ['January', 'February', 'March', 'April', 'May', 'June']

months[2:5]

['March', 'April', 'May']

months[-4:-1]

['March', 'April', 'May']

months = ['January', 'February', 'March', 'April', 'May', 'June']

months[3:]

['April', 'May', 'June']

months[:3]

['January', 'February', 'March']

# Includes the start and up to (but not including) the end
mylist[startAt:endBefore:step]

months = ['January', 'February', 'March', 'April', 'May', 'June']

months[0:6:2]

['January', 'March', 'May']

months[0:6:3]

['January', 'April']

Введение в Python для финансов