Python Dictionary Methods Explained With Examples

Python has some built-in methods that you can use in dictionaries.

• copy()

To return a copy of the dictionary.

Code: 

this_dict = {

  "brand": "Ford",

  "model": "Mustang",

  "year": 1964

}

x= this_dict.copy()

print(x)

Output:

• fromkeys()

To return a dictionary with the keys and values supplied.

Code: 

x = ('keys1', 'keys2', 'keys3')

y = 1

this_dict = dict.fromkeys(x, y)

print(this_dict)

Output: 

• get()

To return the value of the specified key.

Code: 

thisdict = {

  "brand": "Ford",

  "model": "Mustang",

  "year": 1964

}

x= thisdict.copy()

print(x)

Output:

• items()

The value of the supplied key items is returned.

Code: 

y = {

  "subject": "python",

  "class":”10th",

  "year": 2020

}

x = y.get("class")

print(x)

Output:

• keys()

This returns a list containing the dictionary's keys.

Code: 

y = {

  "subject": "python",

  "class":”10th",

  "year": 2020

}

x = y.keys()

print(x)

Output:

• setdefault()

The value of the provided key is returned. If the key doesn't already exist, create it with the supplied value.

Code: 

y = {

  "subject": "python",

  "class":”10th",

  "year": 2020

}

x = y.setdefault(“class”,”12th”)

print(x)

Output:

• update()

The dictionary is updated with the provided key-value pairs.

Code: 

y = {

  "subject": "python",

  "class":”10th",

  "year": 2020

}

x = y.update({“color”:”red”})

print(x)

Output:

• values()

To return a list of all the values in the dictionary.

Code: 

y = {

  "subject": "python",

  "class":”10th",

  "year": 2020

}

x = y.values()

Output:

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