# List of Methods in Python | Set 1 (in, not in, len (), min (), max () …)

Python Methods and Functions

1. The "in" operator : — This operator is used to check for an element in the list. Returns true if the item is in the list, otherwise returns false.

2. Not in operator : — This operator is used to check if an item is missing from the list or not. Returns true if the element is not in the list, otherwise returns false.

 ` # Python code to demonstrate how it works ` ` # & quot; in & quot; and & quot; not in & quot; ` ` # initializing list ` ` lis ` ` = ` ` [` ` 1 ` `, ` ` 4 ` `, ` ` 3 ` `, ` ` 2 ` `, ` ` 5 ` ` ] `   ` # check if 4 is in the list using "in" ; ` ` if ` ` 4 ` ` in ` ` lis: ` ` print ` ` (` ` "List is having element with value 4" ` `) ` ` else ` `: ` ` print ` ` (` ` "List is not having element with value 4 "` `) ` ` `  ` # check if 4 is not in the list using & quot; not in & quot; ` ` if ` ` 4 ` ` not ` ` in ` ` lis: ` ` print ` ` (` ` "List is not having element with value 4" ` `) ` ` else ` `: ` ` print ` ` (` ` "List is having element with value 4 "` `) `

Output:

` List is ha ving element with value 4 List is having element with value 4 `

3. len () : — This function returns the length of the list.

4. min () : — This function returns the minimum list item.

5. max () : — This function returns the maximum list item.

 ` # Python code to demonstrate how it works ` ` # len (), min () and max () ` ` # initialize list 1 ` ` lis ` ` = ` ` [` ` 2 ` `, ` ` 1 ` `, ` ` 3 ` `, ` ` 5 ` `, ` ` 4 ` `] `   ` # using len () to print the length of the list ` ` print ` ` (` `" The length of list is: "` , end ` = ` ` "") ` ` print ` ` (` ` len ` ` (lis)) `   ` # using min () to display the minimum list item ` ` print ` ` (` ` "The minimum element of list is:" ` `, end ` ` = ` ` "") ` ` print ` ` (` ` min ` ` ( lis)) `   ` # using max () to print the maximum list item ` ` print ` ` (` ` "The maximum element of lis t is: "` `, end ` ` = ` `" ") ` ` print ` ` (` ` max ` ` (lis)) `

Output:

` The length of list is: 5 The minimum element of list is: 1 The maximum element of list is: 5 `

6. Operator "+" : — This operator is used to combine two lists into one list.

7. Operator "*" : — This operator is used to multiply a list n times and return one list.

 ` # Python code to demonstrate how it works ` ` # & quot; + & quot; and & quot; * & quot; ` ` # initialize list 1 ` ` lis ` ` = ` ` [` ` 1 ` `, ` ` 2 ` `, ` ` 3 ` `] `   ` # initializing list 2 ` ` lis1 ` ` = ` ` [` ` 4 ` `, ` ` 5 ` `, ` ` 6 ` `] `   ` # using & quot; + & quot; to combine lists ` ` lis2 ` ` = ` ` lis ` ` + ` ` lis1 `   ` # printing multiple lists ` ` print ` ` (` ` "list after concatenation is:" ` `, end ` ` = ` ` "") ` ` for ` ` i ` ` in ` ` range ` ` (` ` 0 ` `, ` ` len ` ` (lis2)): ` ` print ` ` (lis2 [i], end ` ` = ` ` "" ) ``   print ( "" )   # using & # 39; * & # 39; to combine lists lis3 = lis * 3   # printing combo boxes print ( "list after combining is:" , end = "") for i in range ( 0 , len (lis3)): print (lis3 [i], end = ""  ) `

Output:

` list after concatenation is: 1 2 3 4 5 6 list after combining is: 1 2 3 1 2 3 1 2 3 `

8. index (ele, beg, end) : — This function returns the index of the first occurrence of an element from the beginning to the end.

9. count () : — this function counts the number of occurrences of elements in the list.

 ` # Python code to demonstrate how it works ` ` # index () and count () ` ` # list 1 initialization ` ` lis ` ` = ` ` [` ` 2 ` `, ` ` 1 ` `, ` ` 3 ` `, ` ` 5 ` `, ` ` 4 ` `, ` ` 3 ` `] `   ` # using index () to print the first occurrence of 3 ` ` # prints 5 ` < / p> ` print ` ` (` ` "The first occurrence of 3 after 3rd position is : "` `, end ` ` = ` `" ") ` ` print ` ` (lis.index (` ` 3 ` `, ` ` 3 ` `, ` ` 6 ` `)) `   ` # using count ( ) to count the number of occurrences 3 ` ` print ` ` (` ` "The number of occurrences of 3 is:" ` `, end ` ` = ` ` "") ` ` print ` ` (lis.count (` ` 3 ` `)) `` `

Output:

` The first occurrence of 3 after 3rd position is: 5 The number of occurrences of 3 is: 2 `

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