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

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

This article is contributing to Manjeet Singh If you love Python.Engineering and would like to contribute, you can also write an article using contribute.python.engineering or post the article [email protected] See my article appearing on the Python.Engineering homepage and help other geeks.

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