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5. Lists

>>> list=[8,0,5,1]
>>> list
[8, 0, 5, 1]

>>> len(list)
4

>>> list_2=['string',8086,'p']
>>> list_2
['string', 8086, 'p']

>>> len(list_2)
3

Indexing and Slicing

>>> list=['one','ox','ok']
>>> list[0]
'one'

>>> list[1:]
['ox', 'ok']

>>> list[:2]
['one', 'ox']

>>> list[-1]
'ok'

>>> list[::-1]
['ok', 'ox', 'one']

>>> list+[235]
['one', 'ox', 'ok', 235]

>>> list*2
['one', 'ox', 'ok', 'one', 'ox', 'ok']

Basic List Methods

>>> list=[4,0,1,3]
>>> list.append("new")
>>> list
[4, 0, 1, 3, 'new']

>>> list.pop(0)
4
>>> list
[0, 1, 3, 'new']

>>> list.reverse()
>>> list
['new', 3, 1, 0]

Nesting Lists

>>> lst_1=[1,2,3]
>>> lst_2=[4,5,6]
>>> lst_3=[7,8,9]
>>> matrix = [lst_1,lst_2,lst_3]
>>> matrix
[[1, 2, 3], [4, 5, 6], [7, 8, 9]]

>>> matrix[1]
[4, 5, 6]

>>> matrix[0][1]
2

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7.0K viewsSep 20, 2019 at 14:23

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Create: 2019-09-20
Last Update: 2025-07-05 16:05:24

5. Lists

>>> list=[8,0,5,1]
>>> list
[8, 0, 5, 1]

>>> len(list)
4

>>> list_2=['string',8086,'p']
>>> list_2
['string', 8086, 'p']

>>> len(list_2)
3

Indexing and Slicing

>>> list=['one','ox','ok']
>>> list[0]
'one'

>>> list[1:]
['ox', 'ok']

>>> list[:2]
['one', 'ox']

>>> list[-1]
'ok'

>>> list[::-1]
['ok', 'ox', 'one']

>>> list+[235]
['one', 'ox', 'ok', 235]

>>> list*2
['one', 'ox', 'ok', 'one', 'ox', 'ok']

Basic List Methods

>>> list=[4,0,1,3]
>>> list.append("new")
>>> list
[4, 0, 1, 3, 'new']

>>> list.pop(0)
4
>>> list
[0, 1, 3, 'new']

>>> list.reverse()
>>> list
['new', 3, 1, 0]

Nesting Lists

>>> lst_1=[1,2,3]
>>> lst_2=[4,5,6]
>>> lst_3=[7,8,9]
>>> matrix = [lst_1,lst_2,lst_3]
>>> matrix
[[1, 2, 3], [4, 5, 6], [7, 8, 9]]

>>> matrix[1]
[4, 5, 6]

>>> matrix[0][1]
2

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Date: 2025-07-05| Python Codes

Spiking bond yields driving sharp losses in tech stocks

A spike in interest rates since the start of the year has accelerated a rotation out of high-growth technology stocks and into value stocks poised to benefit from a reopening of the economy. The Nasdaq has fallen more than 10% over the past month as the Dow has soared to record highs, with a spike in the 10-year US Treasury yield acting as the main catalyst. It recently surged to a cycle high of more than 1.60% after starting the year below 1%. But according to Jim Paulsen, the Leuthold Group's chief investment strategist, rising interest rates do not represent a long-term threat to the stock market. Paulsen expects the 10-year yield to cross 2% by the end of the year. A spike in interest rates and its impact on the stock market depends on the economic backdrop, according to Paulsen. Rising interest rates amid a strengthening economy "may prove no challenge at all for stocks," Paulsen said.

If riding a bucking bronco is your idea of fun, you’re going to love what the stock market has in store. Consider this past week’s ride a preview.The week’s action didn’t look like much, if you didn’t know better. The Dow Jones Industrial Average rose 213.12 points or 0.6%, while the S&P 500 advanced 0.5%, and the Nasdaq Composite ended little changed.

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