When it is required to convert a list into a list of lists using a step value, a method is defined that uses a simple iteration, the ‘split’ method and the ‘append’ method.ExampleBelow is a demonstration of the samedef convert_my_list(my_list): my_result = [] for ... Read More

When it is required to find the cube of each list element, a simple iteration and the ‘append’ method are used.ExampleBelow is a demonstration of the samemy_list = [45, 31, 22, 48, 59, 99, 0] print("The list is :") print(my_list) my_result = [] for i in my_list: ... Read More

When it is required to print all the words occurring in a sentence exactly K times, a method is defined that uses the ‘split’ method, ‘remove’ method and the ‘count’ methods. The method is called by passing the required parameters and output is displayed.ExampleBelow is a demonstration of the samedef ... Read More

When it is required to customize the space size padding in a list of strings, an empty list, an iteration and the ‘append’ method is used.ExampleBelow is a demonstration of the samemy_list = ["Python", "is", "great"] print("The list is :") print(my_list) lead_size = 3 trail_size = 2 ... Read More

When it is required to find the first occurrence of one list in another list, the ‘set’ attribute and the ‘next’ method is used.ExampleBelow is a demonstration of the samemy_list_1 = [23, 64, 34, 77, 89, 9, 21] my_list_2 = [64, 10, 18, 11, 0, 21] print("The first list is ... Read More

To merge Pandas DataFrame, use the merge() function. The inner join is implemented on both the DataFrames by setting under the “how” parameter of the merge() function i.e. −how = “inner”At first, let us import the pandas library with an alias −import pandas as pd Create DataFrame1 −dataFrame1 = pd.DataFrame( ... Read More

To calculate the variance of column values, use the var() method. At first, import the required Pandas library −import pandas as pdCreate a DataFrame with two columns −dataFrame1 = pd.DataFrame(    { "Car": ['BMW', 'Lexus', 'Audi', 'Tesla', 'Bentley', 'Jaguar'],       "Units": [100, ... Read More

To reset index after group by, at first group according to a column using groupby(). After that, use reset_index().At first, import the required library −import pandas as pdCreate a DataFrame with 2 columns −dataFrame = pd.DataFrame( { "Car": ["Audi", "Lexus", "Audi", ... Read More

To sum only specific rows, use the loc() method. Mention the beginning and end row index using the : operator. Using loc(), you can also set the columns to be included. We can display the result in a new column.At first, let us create a DataFrame. We have Product records ... Read More

To calculate the median of column values, use the median() method. At first, import the required Pandas library −import pandas as pdNow, create a DataFrame with two columns −dataFrame1 = pd.DataFrame( { "Car": ['BMW', 'Lexus', 'Audi', 'Tesla', 'Bentley', 'Jaguar'], ... Read More