We can get the same dictionary. {'James': 'men', 'Potter': 'men', 'mathew': 'men'} Initializing Dictionary Using For Loop Instead Of fromkeys() Method Initializing Dictionary using setdefault() method We can use setdefault() method to initialize dictionary in python as follows. This method...
Learn how to remove duplicates from a List in Python. ExampleGet your own Python Server Remove any duplicates from a List: mylist = ["a","b","a","c","c"] mylist = list(dict.fromkeys(mylist)) print(mylist) Try it Yourself » ...
We all know that keys in a dictionary must be unique. Thus, we will pass the list to thefromkeys()method and then use only the key values of this dictionary to get the unique values from the list. Once we have stored all the unique values of the given list stored into another list,...
In summary, there are several effective methods to extract unique values from a list in Python. Whether you choose to use a set for its simplicity, list comprehension for its readability, thedict.fromkeys()method for its efficiency, or thepandaslibrary for its advanced capabilities, each techniqu...
Check out our latest tutorial onHow to Use the Python pop() Methodto learn more about removing elements from a list using this method. Using the del keyword Thedelkeyword is useful in removing items or slices from a list in Python. The syntax for removing a single item from the list is...
res = list(OrderedDict.fromkeys(states1)) print(res) #['CA', 'NY', 'FL'] 2. Convert Specific Column to List Here is another alternative to getting a column as a Python List by referring column name instead of index in map() transformation. once you selected the column, use the colle...
whenever the function only needs to have a class reference and does not care about any underlying data. One use for classmethods is to create alternate class constructors. In Python 2.3, the classmethoddict.fromkeys()creates a new dictionary from a list of keys. The pure Python equivalent is...
Again, another efficient way to generate aPythondictionaryis through thefromkeys()method. It returns the keys and values that users specify as the arguments. Syntax: dictionary_name =dict.fromkeys(sequence,value) Code Snippet: demo = ("Emp_name","Age","Company") ...
my_dic=dict.fromkeys(keyList,num) Use the “print()” function to get the initialized dictionary: print("My New Initialized Dictionary: ",my_dic) Output Method 4: Initialize a Dictionary in Python Using “defaultdict()” Method The “defaultdict()” method can be utilized to initialize a ...
my_dictionary = dict.fromkeys(keys, value)Copy Use thefromkeys()method when different keys require the same default value during initialization. Method 7: Using a Generator Expression Generator expressions are similar to dictionary comprehensions. Both methods use iterables to generate a dictionary. An...