How do I print the key-value pairs of a dictionary in python
Python 2 and Python 3
i
is the key, so you would just need to use it:
for i in d:
print i, d[i]
Python 3
d.items()
returns the iterator; to get a list, you need to pass the iterator to list()
yourself.
for k, v in d.items():
print(k, v)
Python 2
You can get an iterator that contains both keys and values. d.items()
returns a list of (key, value) tuples, while d.iteritems()
returns an iterator that provides the same:
for k, v in d.iteritems():
print k, v
A little intro to dictionary
d={'a':'apple','b':'ball'}
d.keys() # displays all keys in list
['a','b']
d.values() # displays your values in list
['apple','ball']
d.items() # displays your pair tuple of key and value
[('a','apple'),('b','ball')
Print keys,values method one
for x in d.keys():
print(x +" => " + d[x])
Another method
for key,value in d.items():
print(key + " => " + value)
You can get keys using iter
>>> list(iter(d))
['a', 'b']
You can get value of key of dictionary using get(key, [value])
:
d.get('a')
'apple'
If key is not present in dictionary,when default value given, will return value.
d.get('c', 'Cat')
'Cat'
Or, for Python 3:
for k,v in dict.items():
print(k, v)