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how to use dictionaries in python
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student_data = {
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"name":"inderpaal",
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"age":21,
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"course":['Bsc', 'Computer Science']
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}
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#the keys are the left hand side and the values are the right hand side
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#to print data you do print(name_of_dictionary['key_name'])
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print(student_data['name']) # will print 'inderpaal'
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print(student_data['age']) # will print 21
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print(student_data['course'])[0]
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#this will print 'Bsc' since that field is an array and array[0] is 'Bsc'
python dict
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# decleration
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my_dict = {
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'spam': 'eggs',
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'foo': 4,
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100: 'bar',
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2: 0.5
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}
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# access single values from the dictionary
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print(my_dict['spam']) # eggs
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print(my_dict['foo']) # 4
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print(my_dict[100]) # bar
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print(my_dict[2]) # 0.5
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# iterate over the dictionary
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for key, value in my_dict.items():
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print(key, value)
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# get length of the dictionary
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print(len(my_dict)) # 4
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# modify the dictionary
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my_dict['baz'] = 'qux' # adds a pair
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my_dict['baz'] = 'quxx' # also updates it
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del my_dict['spam'] # removes a pair
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# other methods
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print(my_dict.copy()) # Returns a copy of the dictionary
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print(my_dict.fromkeys('added', 100)) # Returns a dictionary with the specified keys and their values
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print(my_dict.get('foo')) # Returns the value of the specified key
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print(my_dict.items()) # Returns a list containing a tuple for each key value pair
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print(my_dict.keys()) # Returns a list containing the dictionaries keys
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print(my_dict.values()) # Returns a list of all the values in the dictionary
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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
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my_dict.pop('foo') # Removes the element with the specified key
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my_dict.popitem() # Removes the last inserted key-value pair
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my_dict.update({'baz': 'val'}) # Updates the dictionary with the specified key-value pairs
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my_dict.clear() # Removes all the elements from the dictionary
how to use dictionaries in python 3
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dict = {'Name': 'Zara', 'Age': 7, 'Class': 'First'}
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print ("dict['Name']: ", dict['Name'])
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print ("dict['Age']: ", dict['Age'])
dict python
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a = {'a': 123, 'b': 'test'}
dicts python
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thisdict = {
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"brand": "Ford",
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"model": "Mustang",
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"year": 1964
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}
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x = thisdict["model"]
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print(x)
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---------------------------------------------------------------------------
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Mustang
Python Dictionaries
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thisdict = {
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"brand": "Ford",
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"model": "Mustang",
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"year": 1964
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}
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print(thisdict["brand"])
