The Code method from Python book (2th Edition) on page 41 Example 2.1.6
Grammar Description
Python slice operation support for string, list and tupts.
#### Format: How to use?
Variable name[ Start : End : Step ]
Disxription
- Ignore "Start" --- Default start with the subscript 0.
- Ignore "End" --- Default the end of the last character.
- Ignore "Step" --- Default step is 1.
- Ignore all items -- Default get all value of this Variable, But must keep
:.
Code Practice
#### 1. Defined list of number
number = [0, 1, 2, 3, 4, 5, 6, 7]#### 2. Get character from number under identity 0 to 2
print(number[0:3]) Compilation results:
[0, 1, 2]#### 3. Get character from subscript 2 to the end
print(number[2:]) Compilation results:
[2, 3, 4, 5, 6, 7]#### 4. Get character from subscript is 0 to the when subscript is 1 end
print(number[:2])Compilation results:
[0, 1]#### 5. Get all value of list number
print(number[:])Compilation results:
[0, 1, 2, 3, 4, 5, 6, 7]#### 6. From start to finish, get character when step length is 2
print(number[::2])Compilation results:
[0, 2, 4, 6]#### 7. Get character from subscript 1 begin to the penultimate ( subscript is -1 )
print(number[1:-1])Compilation results:
[1, 2, 3, 4, 5, 6]#### 8. Get character from subscript 0 to 5 and step length is 3
print(number[0:6:3])Compilation results:
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