In this article, we are going to see how to find out how much memory is being used by an object in Python. For this, we will use sys.getsizeof() function can be done to find the storage size of a particular object that occupies some space in the memory. This function returns the size of the object in bytes. It takes at most two arguments i.e Object itself.
Syntax: sys.getsizeof(object*)
Parameters: arg can be int, str, function, etc.
Returns: Size of the given object in bytes.
This function is versatile and can work with any data type and even a function. For this first sys module has to be imported and then the object in consideration is passed to the function. Given below are various implementations for different objects.
Example 1: Get the size of an integer.
Python3
import sysvar = 1print(sys.getsizeof(var)) |
Output:
28
Time Complexity: O(1)
Auxiliary Space: O(1)
Example 2: Get the size of an decimal.
Python3
import sysvar = 1.2print(sys.getsizeof(var)) |
Output:
24
Time Complexity: O(1)
Auxiliary Space: O(1)
Example 3: Get the size of an String.
Python3
import sys# string initvar1 = ""var2 = "gfg"var3 = "Welcome to gfg"# get size of an objectprint(sys.getsizeof(var1))print(sys.getsizeof(var2))print(sys.getsizeof(var3)) |
Output:
64 72 96
Time Complexity: O(n)
Auxiliary Space: O(1)
Example 4: Get the size of an List.
Python3
# import moduleimport sys# list initvar1 = []var2 = [1]var3 = [1, 2, 3, 4]# check size of objprint(sys.getsizeof(var1))print(sys.getsizeof(var2))print(sys.getsizeof(var3)) |
Output:
64 72 96
Time Complexity: O(n)
Auxiliary Space: O(1)
Example 5: Get the size of an Set.
Python3
import sys# set initvar1 = set([])var2 = set([1, 2, 3, 4, 5])# get size of objectprint(sys.getsizeof(var1))print(sys.getsizeof(var2)) |
Output:
224 736
Time Complexity: O(n)
Auxiliary Space: O(1)
Example 6: Get the size of an Dictionary.
Python3
import sys# dicvar1 = {'Apple':1}var2 = {'Apple':1, 'ball': 2, 'cat':3, 'dog': 4, 'egg': 5, 'frog': 6}# get the size of objectprint(sys.getsizeof(var1))print(sys.getsizeof(var2)) |
Output:
240 368
Time Complexity: O(n)
Auxiliary Space: O(1)
Example 7: Get the size of an Function.
Python3
import sysdef func(): passvar = funcprint(sys.getsizeof(var)) |
Output:
136
