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T
：
`` `Python
>>> a = "Hello World"
>>> A [0]
'H'
>>> A [1: 5]
'Ello wo'
>>> A [-1]
'D'
>>> A [-2:]
'ld'
>>> A [:: 2]
'Hlowrld'
>>> A [1 :: 2]
'Ellod'
`` `
## 5 hashtags
* #Python
* #sợi dây
* #Programming
* #tutorial
* #mã số
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：
```python
>>> a = "hello...
