Python | Filter the negative values from given dictionary

Given a dictionary, the task is to filter all the negative values from given dictionary. Let’s discuss few methods to do this task.

Method #1: Using dict comprehension

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# Python code to demonstrate
# return the filtered dictionary
# on certain criteria
  
from six import iteritems
# Initialising dictionary
ini_dict = {'a':1, 'b':-2, 'c':-3, 'd':7, 'e':0}
  
# printing initial dictionary
print ("initial lists", str(ini_dict))
  
# filter dictionary such that no value is greater than 0
result = dict((k, v) for k, v in ini_dict.items() if v >= 0)
  
print("resultant dictionary : ", str(result))

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Output:




initial lists {'a': 1, 'c': -3, 'd': 7, 'b': -2, 'e': 0}
resultant dictionary :  {'a': 1, 'd': 7, 'e': 0}





 

Method #2: Using lambda and filter











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# Python code to demonstrate 


# return the filtered dictionary 


# on certain criteria 


  


from six import iteritems 


# Initialising dictionary 


ini_dict = {'a':1, 'b':-2, 'c':-3, 'd':7, 'e':0} 


  


# printing initial dictionary 


print ("initial lists", str(ini_dict)) 


  


# filter dictionary such that no value is greater than 0 


result = dict(filter(lambda x: x[1] >= 0.0, ini_dict.items())) 


result = dict(result) 


  


print("resultant dictionary : ", str(result)) 



















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Output:


initial lists {'c': -3, 'd': 7, 'e': 0, 'a': 1, 'b': -2}
resultant dictionary :  {'e': 0, 'a': 1, 'd': 7}








    

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