(self-hing ai) pythony list

How to create a list:

a=[1,2,3,4,5]

Use a bracket like this to enclose an element in a comma-delimited list of elements, which is represented as a listing.

Common actions in the list:

1. Element Assignment:

a[0]=10

Added a 10 to the list index of 0, overwriting the original 1.

Results: a=[10,2,3,4,5]

2. Add elements:

A.append (6)

Here we use a method append (), the Append () method to add a new object at the end of the list.

Results: a=[10,2,3,4,5,6]

3. Delete the element:

Del A[0]

Here, we used the Del to delete the element with List index 0.

Results: a=[2,3,4,5,6]

Common methods in the list:

1.append:

A.append (7)# Add a new object at the end of the list

2.count:

A.count (2)# used to count the number of occurrences of 2 in List a

3.pop:

A.pop ()# removes the last element in the list by default and returns the value of the element A.pop (3)# removes the element at the specified position and returns the value of the  element

4.insert:

A.insert (2,10)  # Inserts a 10 at the index value of 2, the element on index 2 and the subsequent element index plus 1

5.remove:

A.remove# Remove the first match starting at index 0

6.sort:

A.sort ()# default ascending order

Use the reverse parameter:

A.sort (reverse=true)# reverse order

Strings can use Key=len:

A.sore (Key=len)# Sort by string by short to long A.sore (key=len,reverse=true)# Sort by string from long to short

(self-hing ai) pythony list