Dictionary methods in Python

1.clear

The clear method clears all items in the dictionary. No return value

D = {'age''name':'Gumby'} D.clear ()
>>> D
{}

2.copy

The Copy method returns a new dictionary with the same key-value pairs

D = {'age''name' 'Gumby'  = d.copy ()
>>> b
{' Age ':, ' name ': ' Gumby '}

3.fromkeys

The Fromkeys method creates a new dictionary with a sequence of key values, with each key value corresponding to none by default

>>> {}.fromkeys (['name','age']) {'  Age'name' : None}

4.get

The Get method is a more permissive way to access a dictionary entry, which returns none by default when accessing a key that does not exist in the dictionary.

D = {}>>>print (d.get ('name')) None

5.items

The items method returns the dictionary all items as a sequence, note: No specific order is returned

D = {'name'Gumby' age' : >>>d.items [(' age', "), ('name ' ' Gumby ')]

6.pop

The Pop method removes the key-value pair from the dictionary and returns the value of the key

D = {'a'b ': 2}>>> d.pop ('A  ')1>>> d{'b' : 2}

7.update

The Update method can update another dictionary with one dictionary entry, if none is added, and if there is an update

 d = { " x   ": 1, "  y   ": 2,  '   Z   ": 3} b  = {  " x   " : 0} d.update (b)  >>> d{  " x  " : 0,  " y  " : 2, Span style= "COLOR: #800000" > " z   ' : 3} 

8.values

The values method returns all value in the dictionary as a list

D = {'x'y'z' : 3} >>> d.values () [1, 2, 3]

From the beginning Python from novice to Professional [move]magnus Lie Hetland

Dictionary methods in Python