Python del statement

Python del statement is used to delete variables, objects, elements of an object,…

Python del statement Syntax:

del obj_name 

Example 1: Delete variable, list, and dictionary

my_var1 = 10
my_tuple1 = ('John', 10)
my_dict1 = {'name': 'David', 'age': 27}

del my_var1
del my_tuple1
del my_dict1

Example 2: Delete an user-defined object

class r2schools:
  r = 6
  def web(self):
     print('r2schools')

# Output: 
print(r2schools)

# delete r2schools
del MyClass

# Error: r2schools is not defined
print(r2schools)

Example 3: Remove a key:value pair from a dictionary

r2schools={'programming':'Python','database':'PostgreSQL','OS':'Linux'}

r2schools={'programming':'Python','database':'PostgreSQL','OS':'Linux'}
del r2schools['OS']
print(r2schools)
{'programming': 'Python', 'database': 'PostgreSQL'}

Example 4: Remove items, slices from a list

list1=[1,2,3,4,5,6,7,8,9]

del list1[4] # This removes 5th element i.e value 5

del list1 [4:] #This removes elements from 5th position.

del list1 #This removes entire list