Print a dictionary line by line using for loop & dict. items() dict. items() returns an iterable view object of the dictionary that we can use to iterate over the contents of the dictionary, i.e. key-value pairs in the dictionary and print them line by line i.e.
To check if a key-value pair exists in a dictionary, i.e., if a dictionary has/contains a pair, use the in operator and the items() method. Specify a tuple (key, value) . Use not in to check if a pair does not exist in a dictionary.
items() This method returns a list of a dictionary's key-value pairs.
i
is the key, so you would just need to use it:
for i in d:
print i, d[i]
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)
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)
The dictionary:
d={'key1':'value1','key2':'value2','key3':'value3'}
Another one line solution:
print(*d.items(), sep='\n')
Output:
('key1', 'value1')
('key2', 'value2')
('key3', 'value3')
(but, since no one has suggested something like this before, I suspect it is not good practice)
for key, value in d.iteritems():
print key, '\t', value
If you want to sort the output by dict key you can use the collection package.
import collections
for k, v in collections.OrderedDict(sorted(d.items())).items():
print(k, v)
It works on python 3
>>> d={'a':1,'b':2,'c':3}
>>> for kv in d.items():
... print kv[0],'\t',kv[1]
...
a 1
c 3
b 2
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With