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Mastering flat_map in Python with List Comprehension

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Introduction In Python, when working with nested lists or iterables, one common challenge is flattening them into a single list while applying transformations. Many programming languages provide a built-in flatMap function, but Python does not have an explicit flat_map method. However, Python’s powerful list comprehensions offer an elegant way to achieve the same functionality. This article examines implementation behavior using Python’s list comprehensions and other methods. What is flat_map ? Functional programming  flatMap is a combination of map and flatten . It transforms the collection's element and flattens the resulting nested structure into a single sequence. For example, given a list of lists, flat_map applies a function to each sublist and returns a single flattened list. Example in a Functional Programming Language: List(List(1, 2), List(3, 4)).flatMap(x => x.map(_ * 2)) // Output: List(2, 4, 6, 8) Implementing flat_map in Python Using List Comprehension Python’...

Python Split String: Techniques and Best Practices

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Here is an example for  splitting a string in Python . The functions you need are strip and split to split string, or text.  Here's the string taken for split My task is I want to split address string. Historically, the address is lengthy. It contains the door number, floor number, street number, and street name. Rama Krishna 20/3 ABC street EFG Nagar US 234567 How to Split a string The python split string works in two steps. The first step is to use  strip function , which removes both leading and trailing spaces. Next, use the the split function, which splits the input string, or text into a list. Python program user_address = input("Enter an address") if user_address. strip() : #check that string is not empty (after removing leading #and trailing spaces)     print("Your address is " + user_address) split_address = user_address. split() print(split_address) Output Interactively, it asks the user to enter the address. After the code runs, the address splits i...