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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 my_result = [] for elem in my_list: my_result.append((lead_size * ' ') + elem + (trail_size * ' ')) print("The result is :") print(my_result)OutputThe list is : ['Python', 'is', 'great'] The result is : [' Python ', ' is ', ' great ']ExplanationA list is defined and ... 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 :") print(my_list_1) print("The second list is :") print(my_list_2) my_list_2 = set(my_list_2) my_result = next((ele for ele in my_list_1 if ele in my_list_2), None) print("The result is :") print(my_result)OutputThe first list is : [23, 64, 34, 77, 89, 9, 21] The second list is : [64, 10, 18, ... 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( { "Car": ['BMW', 'Lexus', 'Audi', 'Mustang', 'Bentley', 'Jaguar'], "Units": [100, 150, 110, 80, 110, 90] } ) Now, create DataFrame2 −dataFrame2 = 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, 150, 110, 80, 110, 90] } ) Finding Variance of "Units" column values using var() function −print"Variance of Units column from DataFrame1 = ", dataFrame1['Units'].var()In the same way, we have calculated the Variance from the 2nd DataFrame.ExampleFollowing is the complete code −import pandas as pd ... 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", "Mercedes", "Audi", "Lexus", "Mercedes", "Lexus", "Mercedes"], "Reg_Price": [1000, 1400, 1100, 900, 1700, 1800, 1300, 1150, 1350] } ) Group according to Car column −resDF = dataFrame.groupby("Car").mean()Now, reset index after grouping −resDF.reset_index() ExampleFollowing is the code − import pandas as ... Read More
A protocol is a set of rules and standards that primarily outline a language that devices will use to communicate. There are an excellent range of protocols in use extensively in networking, and that they are usually implemented in numerous layers.It provides a communication service where the process is used to exchange the messages. When the communication is simple, we can use only one simple protocol.When the communication is complex, we must divide the task between different layers, so, we need to follow a protocol at each layer, this technique we used to call protocol layering. This layering allows us ... Read More
A protocol is a set of rules and standards that primarily outline a language that devices will use to communicate. There are an excellent range of protocols in use extensively in networking, and that they are usually implemented in numerous layers.It provides a communication service where the process is used to exchange the messages. When the communication is simple, we can use only one simple protocol.When the communication is complex, we must divide the task between different layers, so, we need to follow a protocol at each layer, this technique we used to call protocol layering. This layering allows us ... Read More
Switching is a technique of transferring the information from one computer network to another computer network.Let us discuss about switching in step by step manner as follows −Step 1 − In a computer network the switching can be achieved by using switches.Step 2 − A switch is a small piece of hardware device that is used to join multiple computers together with one local area network (LAN).Step 3 − These are devices which are helpful in creating temporary connections between two or more devices that are linked to the switch.Step 4 − Switches are helpful in forwarding the packets based ... Read More
There are two types of microwaves in computer networks. These are as follows −Terrestrial microwaveSatellite microwaveLet us discuss satellite microwaves in detail.Satellite MicrowaveIt is used for broadcasting and receiving signals. The signals are transmitted to space where these satellites are positioned and it retransmits the signal to the appropriate location.It acts as a repeater as it only receives the signal and retransmits it. The satellites should be aligned properly with the earth for this system to work. It is a physical object which revolves around the earth at a known height.Satellite communication is more flexible and reliable nowadays than cable ... Read More
There are two types of microwaves in computer networks. These are as follows −Terrestrial microwaveSatellite microwaveLet us discuss terrestrial microwaves in detail.Terrestrial MicrowaveIt is a technology which transmits the focused beam of a radio signal from one ground-based microwave transmission antenna to another antenna.Microwaves are generally an electromagnetic wave which has the frequency in the range from 1GHz to 1000 GHz.These are unidirectional waves, whereas the sending and receiving antenna is to be aligned which means the antennas are narrowly focused.Here antennas are mounted on the towers to send a beam to another antenna which is present at km away.It ... Read More