Lists in Lists

Introduction to Python for Finance

Adina Howe

Instructor

Lists can contain various data types, including lists themselves.
Example: a nested list describing the month and its associated consumer price index
```
  cpi = [['Jan', 'Feb', 'Mar'], [238.11, 237.81, 238.91]]
```

Subsetting Nested Lists

months = ['Jan', 'Feb', 'Mar']
print(months[1])

'Feb'

cpi = [['Jan', 'Feb', 'Mar'], [238.11, 237.81, 238.91]]
print(cpi[1])

[238.11, 237.81, 238.91]

How would one subset out a specific price index?

cpi = [['Jan', 'Feb', 'Mar'], [238.11, 237.81, 238.91]]
print(cpi[1])

[238.11, 237.81, 238.91]

print(cpi[1][0])

238.11

Introduction to Python for Finance