Python

get() method in dictionary

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get() method in dictionary - Python

This method is used to get the value of the specified key from a dictionary.

This method takes a required argument which is the key whose value you want to get and it also takes an optional argument default.

It will return None when specified key is not present in dictionary and default value is not specified.

The time complexity of this method is O(1).

Syntax –

dictionary.get(key, default=None)

Parameters –

key → key of dictionary whose value you want to retrieve

default(optional) → default value when key is not present, by default None

return → value of specified key

Example –

				
					student = {'name':'abc','rollno':1234,'year':4,'hobby':'scroll reels'}
print("Student details:",student)
print("Hobby of the student: ",student.get('hobby'))

# Output -
# Student details: {'name': 'abc', 'rollno': 1234, 'year': 4, 'hobby': 'scroll reels'}
# Hobby of the student:  scroll reels

In the above example, first we create a dictionary with student details and store it in student variable.

After creating student dictionary print the dictionary on the output screen.

Then using the .get() method we get the hobby of the student and then print on the output screen.

Example –

				
					# Print the math marks of the student 

marks={'hindi':90,'english':87,'physics':92,'chemistry':85}
math_marks=marks.get('math',"marks not found")
print("Math marks of the student:",math_marks)

# Output -
# Math marks of the student: marks not found

Example –

				
					# Print highest marks 
marks={'aman':78,'naman':92,'chaman':89,'suman':80}
highest_marks=0

for i in marks:
	current_marks=marks.get(i)
	if current_marks>highest_marks:
		highest_marks=current_marks

print("Highest marks :",highest_marks)

# Output -
# Highest marks : 92

Example –

				
					my_dict={'a':10,'b':20,'c':30,'d':40}
value=my_dict.get('e')
print("Value of e:",value)

# Output -
# Value of e: None

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