How python uses the List count method

This article mainly introduces python how to use the List count method, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.

List count method

The count () method is used to count the number of times an element appears in the list.

Use syntax:

# use syntax list.count (obj) # number of returns

Count the number of times a single object:

# count the number of times per object aList = [123,' abc', 'good',' abc', 123] print ("Count for 123:", aList.count (123)) print ("Count for abc:", aList.count ('abc')) # Count for 123: "Count for abc: 2

Count the number of times for each object in List:

Test = ["aaa", "bbb", "aaa", "aaa", "ccc", "ccc", "ddd", "aaa", "ddd", "eee" "ddd"] print (test.count ("aaa")) # 4print (test.count ("bbb")) # 1test_result = [] for i in test: if i not in test_result: test_result.append (I) print (test_result) for i in test_result: print (f "{I}: {test.count (I)}")'41 ['aaa',' bbb', 'ccc',' ddd' 'eee'] aaa:4bbb:1ccc:2ddd:3eee:1''' thank you for reading this article carefully. I hope the article "how to use the List count method of python" shared by the editor will be helpful to everyone. At the same time, I also hope that you will support and pay attention to the industry information channel. More related knowledge is waiting for you to learn!