Skip to content
Related Articles

Related Articles

Python – Minimum in each record value list
  • Last Updated : 27 Feb, 2020

Many times, while dealing with containers in any language we come across lists of tuples in different forms, tuples in themselves can have sometimes more than native datatypes and can have list as their attributes. This article talks about the min of list as tuple attribute. Let’s discuss certain ways in which this task can be performed.

Method #1 : Using list comprehension + min()
This particular problem can be solved using list comprehension combined with the min function in which we use min function to find the min of list as a tuple attribute and list comprehension to iterate through the list.

filter_none

edit
close

play_arrow

link
brightness_4
code

# Python3 code to demonstrate 
# Record Value list Minimum
# using list comprehension + min() 
  
# initializing list 
test_list = [('key1', [3, 4, 5]), ('key2', [1, 4, 2]), ('key3', [9, 3])] 
  
# printing original list 
print("The original list : " + str(test_list)) 
  
# using list comprehension + min() 
# Record Value list Minimum
res = [(key, min(lst)) for key, lst in test_list] 
  
# print result 
print("The list tuple attribute minimum is : " + str(res)) 

chevron_right


Output :

The original list : [('key1', [3, 4, 5]), ('key2', [1, 4, 2]), ('key3', [9, 3])]
The list tuple attribute minimum is : [('key1', 3), ('key2', 1), ('key3', 3)]

 

Method #2 : Using map + lambda + min()
The above problem can also be solved using the map function to extend the logic to the whole list and min function can perform the similar task as the above method.



filter_none

edit
close

play_arrow

link
brightness_4
code

# Python3 code to demonstrate 
# Record Value list Minimum
# using map() + lambda + min() 
  
# initializing list 
test_list = [('key1', [3, 4, 5]), ('key2', [1, 4, 2]), ('key3', [9, 3])] 
  
# printing original list 
print("The original list : " + str(test_list)) 
  
# using map() + lambda + min() 
# Record Value list Minimum 
res = list(map(lambda x: (x[0], min(x[1])), test_list)) 
  
# print result 
print("The list tuple attribute minimum is : " + str(res)) 

chevron_right


Output :

The original list : [('key1', [3, 4, 5]), ('key2', [1, 4, 2]), ('key3', [9, 3])]
The list tuple attribute minimum is : [('key1', 3), ('key2', 1), ('key3', 3)]

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.

My Personal Notes arrow_drop_up
Recommended Articles
Page :