1, the list
1.1 List of elements in square brackets [] enclosed, with commas between elements, separated
1.2 the list elements may be of different types
1.3 Access list element format is: list name [index]
1.4 In situ support change
2, the dictionary table
2.1 with a dictionary table elements enclosed in braces {}, with commas between elements, separated
2.2 dictionary table of elements is a bond, value pairs
2.3 accessible format dictionary table element is: name dictionary [key], name or dictionaries .get (key)
3, tuples
3.1 yuan group of elements in parentheses () enclosed, with commas between elements, separated
Access 3.2 format element tuple: tuple name [index]
3.3 does not support in-situ change
4, the division value
With 4.1 /, //, // which removes the fractional part
5, print function
5.1 comes with Stop Sign \ n
5.2 custom symbol terminates, end = ''
6、isinstance()
Determining whether an element of a certain type, such as isinstance (3, int)
7, access the string elements
7.1 access individual elements: name [index]
7.2 multiple access elements: a string name [index: index]
7.3 Access end elements: Name String [-1], or string name [len () - 1]
7.4 Take some elements: string name [:: 2]
7.5 taking all the elements: string name [:]
8, a list of character string conversion
8.1 String transfer list: list (string)
8.2 to String list:. '' Join (list)
9, python exchange variables
a,b=b,a
10, list comprehension
[C ** 2 for c in the list]
11, copy the list of questions that need attention
11.1 a = [1,2,3], b = a, the changes to be made will be reflected to a b which
11.2 a = [1,2,3], b = a [:], for a change is made will not affect b
11.3 a = [1,2,3], b = a.copy (), a change is made to not affect b