Skip to content
Related Articles

Related Articles

Python | Test for nested list
  • Last Updated : 05 Sep, 2019

Sometimes, while working with Python list, we might have a problem in which we need to find that a list is a Matrix or a list contains list as it’s element. This problem can come in Data Science domain as it involves use of Matrices more than often. Let’s discuss certain way in which this task can be performed.

Method : Using any() + isinstance()
The combination of above functions can be used to perform this task. The any() is used to check for each of the occurrence and isinstance() is used to check for list.




# Python3 code to demonstrate working of
# Test for nested list
# using any() + isinstance()
  
# initialize list
test_list = [[5, 6], 6, [7], 8, 10]
  
# printing original list
print("The original list is : " + str(test_list))
  
# Test for nested list
# using any() + isinstance()
res = any(isinstance(sub, list) for sub in test_list)
  
# printing result
print("Does list contain nested list ? : " + str(res))
Output :
The original list is : [[5, 6], 6, [7], 8, 10]
Does list contain nested list ? : True

 Attention geek! Strengthen your foundations with the Python Programming Foundation Course and learn the basics.  

To begin with, your interview preparations Enhance your Data Structures concepts with the Python DS Course. And to begin with your Machine Learning Journey, join the Machine Learning – Basic Level Course

My Personal Notes arrow_drop_up
Recommended Articles
Page :