List Cheatsheet

1. .append(item): To add an item in a list. l1=[12,23,34,56] l1.append(3.14) # [12,23,34,56,3.14]

2. .extend(list): To add a list in a list l1=[12,23,34,56] l2=['a','b','c'] # [12,23,34,56,'a','b','c']

3. .insert(index,item): To add an item at a particular index in a list l1=[12,23,34,56] l1.insert(2,420) # [12,23,420,34,56]

4. .remove(item): To remove an item from the list l1=[12,23,34,56] l1.remove(34) # [12,23,56]

5. .pop(index): To remove an item fromt the list on behalf of index number l1=[12,23,34,56] l1.pop(1) # [12,34,56]

6. .index(item): It provides the index number of an item. l1=[12,23,34,56] l1.index(23) # 1

7. .count(item): It provide the counting of an item in a list l1=[12,23,34,56,34,34] l1.count(34) # 3

8. .sort(): It arranges the items of a list in an ascending order l1=[90,121,1,2,23,34,5,6] l1.sort() # [1,2,5,6,23,34,90,121]

9. .reverse(): It reverse the items from first to last in a list l1=[90,121,1,2,23,34,5,6] l1.reverse() # [6,5,34,23,2,1,121,90]

10. .copy(): It copies item of one list to another list l1=[90,121,1,2,23,34,5,6] l2=l1.copy() # [90,121,1,2,23,34,5,6]

11. .clear(): It removes all the items of a list in one go. l1=[90,121,1,2,23,34,5,6] l1.clear() # []