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 dictionaryhow 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'}Copyright © 2021 Codeinu
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