print key of dictionary python
for key, value in mydic.items() : print (key, value)
print key of dictionary python
for key, value in mydic.items() : print (key, value)
python print dictionary line by line
# Iterate over key/value pairs in dict and print them for key, value in student_score.items(): print(key, ' : ', value)
python dict
# decleration my_dict = { 'spam': 'eggs', 'foo': 4, 100: 'bar', 2: 0.5 } # access single values from the dictionary print(my_dict['spam']) # eggs print(my_dict['foo']) # 4 print(my_dict[100]) # bar print(my_dict[2]) # 0.5 # iterate over the dictionary for key, value in my_dict.items(): print(key, value) # get length of the dictionary print(len(my_dict)) # 4 # modify the dictionary my_dict['baz'] = 'qux' # adds a pair my_dict['baz'] = 'quxx' # also updates it del my_dict['spam'] # removes a pair # other methods print(my_dict.copy()) # Returns a copy of the dictionary print(my_dict.fromkeys('added', 100)) # Returns a dictionary with the specified keys and their values print(my_dict.get('foo')) # Returns the value of the specified key print(my_dict.items()) # Returns a list containing a tuple for each key value pair print(my_dict.keys()) # Returns a list containing the dictionaries keys print(my_dict.values()) # Returns a list of all the values in the dictionary my_dict.setdefault('a', 'b') # Returns the value of the specified key. If the key does not exist: insert the key, with the specified value my_dict.pop('foo') # Removes the element with the specified key my_dict.popitem() # Removes the last inserted key-value pair my_dict.update({'baz': 'val'}) # Updates the dictionary with the specified key-value pairs my_dict.clear() # Removes all the elements from the dictionary
how to write a dict in pytohn
# get vs [] for retrieving elements my_dict = {'name': 'Jack', 'age': 26} # Output: Jack print(my_dict['name']) # Output: 26 print(my_dict.get('age'))
how to create dictionary in python
d = {'key': 'value'} print(d) # {'key': 'value'} d['mynewkey'] = 'mynewvalue' print(d) # {'key': 'value', 'mynewkey': 'mynewvalue'}
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