In this video we will discuss about loops in Python, we have basically 2 types of loops :
While loops: n python, while loop is used to execute a block of statements repeatedly until a given a condition is satisfied. And when the condition becomes false, the line immediately after the loop in program is executed.
While loops : For loops are used for sequential traversal. For example: traversing a list or string or array etc. In Python, there is no C style for loop, . There is “for in” loop which is similar to for each loop in other languages. Let us learn how to use for in loop for sequential traversals.
Python programming language provides following types of loops to handle looping requirements. Python provides three ways for executing the loops. While all the ways provide similar basic functionality, they differ in their syntax and condition checking time.
In python, while loop is used to execute a block of statements repeatedly until a given a condition is satisfied. And when the condition becomes false, the line immediately after the loop in program is executed.
while expression: statement(s)
All the statements indented by the same number of character spaces after a programming construct are considered to be part of a single block of code. Python uses indentation as its method of grouping statements.
# Python program to illustrate # while loop count = 0 while (count < 3): count = count + 1 print("Hello Geek")
Hello Geek Hello Geek Hello Geek
The else clause is only executed when your while condition becomes false. If you break out of the loop, or if an exception is raised, it won’t be executed.
If else like this:
if condition: # execute these statements else: # execute these statements
and while loop like this are similar
while condition: # execute these statements else: # execute these statements
Hello Geek Hello Geek Hello Geek In Else Block
# Python program to illustrate # Single statement while block count = 0 while (count == 0): print("Hello Geek")
Note: It is suggested not to use this type of loops as it is a never ending infinite loop where the condition is always true and you have to forcefully terminate the compiler.
for iterator_var in sequence: statements(s)
It can be used to iterate over iterators and a range.
# Python program to illustrate # Iterating over a list print("List Iteration") l = ["geeks", "for", "geeks"] for i in l: print(i) # Iterating over a tuple (immutable) print("\nTuple Iteration") t = ("geeks", "for", "geeks") for i in t: print(i) # Iterating over a String print("\nString Iteration") s = "Geeks" for i in s : print(i) # Iterating over dictionary print("\nDictionary Iteration") d = dict() d['xyz'] = 123 d['abc'] = 345 for i in d : print("%s %d" %(i, d[i]))
List Iteration geeks for geeks Tuple Iteration geeks for geeks String Iteration G e e k s Dictionary Iteration xyz 123 abc 345
See the below example:
# Python program to illustrate # Iterating by index list = ["geeks", "for", "geeks"] for index in range(len(list)): print list[index]
geeks for geeks
Below example explains how to do this:
# Python program to illustrate # combining else with for list = ["geeks", "for", "geeks"] for index in range(len(list)): print list[index] else: print "Inside Else Block"
geeks for geeks Inside Else Block
for iterator_var in sequence: for iterator_var in sequence: statements(s) statements(s)
The syntax for a nested while loop statement in Python programming language is as follows:
while expression: while expression: statement(s) statement(s)
A final note on loop nesting is that we can put any type of loop inside of any other type of loop. For example a for loop can be inside a while loop or vice versa.
# Python program to illustrate # nested for loops in Python from __future__ import print_function for i in range(1, 5): for j in range(i): print(i, end=' ') print()
1 2 2 3 3 3 4 4 4 4
# Prints all letters except 'e' and 's' for letter in 'geeksforgeeks': if letter == 'e' or letter == 's': continue print 'Current Letter :', letter var = 10
Current Letter : g Current Letter : k Current Letter : f Current Letter : o Current Letter : r Current Letter : g Current Letter : k
for letter in 'geeksforgeeks': # break the loop as soon it sees 'e' # or 's' if letter == 'e' or letter == 's': break print 'Current Letter :', letter
Current Letter : e
# An empty loop for letter in 'geeksforgeeks': pass print 'Last Letter :', letter
Last Letter : s
#python #web-development #machine-learning
No programming language is pretty much as diverse as Python. It enables building cutting edge applications effortlessly. Developers are as yet investigating the full capability of end-to-end Python development services in various areas.
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Python has an improved sentence structure - one that is like the English language. New engineers for Python can undoubtedly understand where they stand in the development process. The simplicity of composing allows quick application building.
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Utilized by the best
Alright - Python isn't simply one more programming language. It should have something, which is the reason the business giants use it. Furthermore, that too for different purposes. Developers at Google use Python to assemble framework organization systems, parallel information pusher, code audit, testing and QA, and substantially more. Netflix utilizes Python web development services for its recommendation algorithm and media player.
Massive community support
Python has a steadily developing community that offers enormous help. From amateurs to specialists, there's everybody. There are a lot of instructional exercises, documentation, and guides accessible for Python web development solutions.
Today, numerous universities start with Python, adding to the quantity of individuals in the community. Frequently, Python designers team up on various tasks and help each other with algorithmic, utilitarian, and application critical thinking.
Python is the greatest supporter of data science, Machine Learning, and Artificial Intelligence at any enterprise software development company. Its utilization cases in cutting edge applications are the most compelling motivation for its prosperity. Python is the second most well known tool after R for data analytics.
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A Python tutorial to understand the uses of for loop in various ways including examples.
Python is a general-purpose programming language, which emphasizes making programming easy, efficient coding, and unleashes the user’s potential. Loops are the vital part of programming as it allows the user to repetitive use a set of codes using loops. So in the following article, we will see how to use
for loops in python.
Till the iteration of the last item in the sequence, for loop run the instructions. It iterates over sets of instructions in sequence, arrays, and a tuple for a pre-defined period or until the last item and calculation are executed.
For loop can be categorized in three ways.
#python #for loop #loops #loop #python for loop
Python is a renowned general-purpose programming language. Unlike HTML or CSS, general-purpose programming languages are used in several application domains.
In programming languages, loops are a set of instructions that execute a sequence of code continuously until a certain condition is fulfilled. Most modern programming languages do include the concept of loops. The syntax for loops in each language may differ but the logic being used remains the same.
Many programming languages have several types of loops and the most renowned ones are while and for loop. Today we will only learn about while loop and where it should be preferred over other kinds of loops.
In most cases loops are interchangeable with each other but while loop should be preferred over other loops when the required condition is boolean. We can think of a while loop as a repeating if statement, to make the concept easier to understand.
#python #loop #while #python while loop with examples #python while loop
Python is awesome, it’s one of the easiest languages with simple and intuitive syntax but wait, have you ever thought that there might ways to write your python code simpler?
In this tutorial, you’re going to learn a variety of Python tricks that you can use to write your Python code in a more readable and efficient way like a pro.
Swapping value in Python
Instead of creating a temporary variable to hold the value of the one while swapping, you can do this instead
>>> FirstName = "kalebu" >>> LastName = "Jordan" >>> FirstName, LastName = LastName, FirstName >>> print(FirstName, LastName) ('Jordan', 'kalebu')
#python #python-programming #python3 #python-tutorials #learn-python #python-tips #python-skills #python-development
Today you’re going to learn how to use Python programming in a way that can ultimately save a lot of space on your drive by removing all the duplicates.
In many situations you may find yourself having duplicates files on your disk and but when it comes to tracking and checking them manually it can tedious.
Heres a solution
Instead of tracking throughout your disk to see if there is a duplicate, you can automate the process using coding, by writing a program to recursively track through the disk and remove all the found duplicates and that’s what this article is about.
But How do we do it?
If we were to read the whole file and then compare it to the rest of the files recursively through the given directory it will take a very long time, then how do we do it?
The answer is hashing, with hashing can generate a given string of letters and numbers which act as the identity of a given file and if we find any other file with the same identity we gonna delete it.
There’s a variety of hashing algorithms out there such as
#python-programming #python-tutorials #learn-python #python-project #python3 #python #python-skills #python-tips