python

'To Roll out' vs 'To Release' (for a software)

"Roll out" means to install new software across a company network whereas "Release" is to launch a new product into the market

power in python

** operator x ** y

cand nu stii cate argumente are functia, cati parametri

*args If you do not know how many arguments that will be passed into your function, add a * before the parameter name in the function definition. This way the function will receive a tuple of arguments, and can access the items accordingly: Example If the number of arguments is unknown, add a * before the parameter name: def my_function(*kids): print("The youngest child is " + kids[2]) my_function("Emil", "Tobias", "Linus")

ce sa verifici la un while loop

1. initializarea variabilelor ! a tuturor variabilelor valoarea unor variabile folosite anterior 2, ce valori pot lua variabilele ca sa nu faci infinite loop Pay close attention to your variables and what possible values they can take. Think about unexpected values, like zero.

cel mai mic/ mare numar dintr-o lista

1. min list=[23, 54, 2, 32] x=min(list) print (x) 2. sort list=[23, 54, 2, 32] x=list.sort( ) print (list[0])

Why return is used in Python?

A return statement is used to end the execution of the function call and "returns" the result (value of the expression following the return keyword) to the caller. The statements after the return statements are not executed. We can use the return statement inside a function only. In Python, every function returns something. If there are no return statements, then it returns None. If the return statement contains an expression, it's evaluated first and then the value is returned.

What is the purpose of the code pad?

Codepad is one of the most recommended tools to make the task of sharing source code easier and faster. It is a place for developers to share and save code with a remarkable community of developers that can you help you with your code. is an online compiler/interpreter, and a simple collaboration tool Code Pad allows you to write simple code snippets or build complete programming applications and projects easily, straight on your Chromebook

cum iterezi pe un singur element cu for

Facand o lista cu un singur element As you see here, for x in 25, print(x), in this example, we're trying to iterate over the number 25. Python prints a type error telling us that integers are not iterable. There are two solutions to this problem, depending on what we're trying to do. If we want to go from zero to 25, then we use the range function, so for x in range(25), print(x), but if we're trying to iterate over a list that has 25 as the only element, then it needs to be a list and that means writing it between square brackets, for x in Play video starting at :1:24 and follow transcript1:24list [25], print(x).

for sau while

Generally we use for when we know the number of times we want to loop.

"cat" is larger than "Cat"

In Python uppercase letters are alphabetically sorted before lowercase letters.

#

In Python, comments are indicated by the hash character.

Refactoring

In programming lingo, when we re-write code to be more self-documenting, we call this process refactoring

Where is POST in computer?

On computer systems, the POST operation runs at the beginning of the boot sequence. If all the tests pass, the rest of the startup process continues automatically. Both Macs and Windows PCs run a POST each time the computer is booted up or restarted When power is turned on, POST (Power-On Self-Test) is the diagnostic testing sequence that a computer's basic input/output system (or "starting program") runs to determine if the computer keyboard, random access memory, disk drives, and other hardware are working correctly.

what is patch in computer

Patches are software and operating system (OS) updates that address security vulnerabilities within a program or product. "While general software updates can include lots of different features, patches are updates that address specific vulnerabilities."

What is the meaning of put command?

Put is an FTP command used to upload a file to a remote computer. The PUT command lets you insert lines from a current file into a second file. The PUT command stores a copy of a certain number of lines, starting with the current line. You can then append the stored lines to the end of another file.

input() function

Python user input from the keyboard can be read using the input() built-in function. The input from the user is read as a string and can be assigned to a variable. After entering the value from the keyboard, we have to press the "Enter" button. Then the input() function reads the value entered by the user. The program halts indefinitely for the user input. There is no option to provide timeout value. If we enter EOF (*nix: Ctrl-D, Windows: Ctrl-Z+Return), EOFError is raised and the program is terminated !!! orice introduci de la tastatura e string, chiar daca e un numar; ca sa-l folosesti ca numar: value = input("Please enter an integer:\n") value = int(value) print(f'You entered {value} and its square is {value ** 2}')

Which operator is used for branching?

The 'if' operator is used to specify a condition in the branching statement.

while

The statements inside a while loop continue to execute until the condition for the while loop evaluates to False or a break statement is encountered.

print in line in python

To print on the same line in Python, add a second argument, end=' ', to the print() function call. For instance: print("Hello world!", end = ' ') print("It's me.") When you introduce consecutive print() function calls, Python automatically adds a new line. However, sometimes this is not what you want. In this guide, you will learn how to print on the same line in Python in a couple of easy ways. To make Python stop adding new lines when printing, you can specify another parameter inside the print() function. This parameter is an optional parameter called end. It specifies the last character after printing the string. By default, the end parameter is a newline character, that is, "\n". But you can change the end parameter to whatever you want. If you do not want to introduce a new line, replace the end with an empty space " ". As another example, let's set the end parameter such that a print() function call ends with 3 line breaks: s1 = "This is a test" s2 = "This is another test" print(s1, end="\n\n\n") print(s2) Pass Multiple Strings into the Same print() Function Call For instance: s1 = "This is a test" s2 = "This is another test" print(s1, s2) Join the Strings Before Printing The join() method follows this syntax: separator.join(elements) Where separator is a string that acts as a separator between each element in the elements list. For example, you can join two strings by a blank space to produce one long string and print it. Here is how it looks in code: s1 = "This is a test" s2 = "This is another test" combined = " ".join([s1, s2]) print(combined) Conclusion To recap, the print() function adds a newline character to the end by default. This means each print() call prints into a new line. To not print a new line, you can choose one of these three options: 1. Specify an optional parameter end as a blank space. 2. Call the print() function with multiple inputs. 3. Use string's join() method to combine the strings before printing.

for e in entries: print(e) But how can I ignore the first element in entries? I want to iterate from index 1 instead of 0, and to iterate till the last element.

To skip the first element in Python you can simply write for car in cars[1:]: # Do What Ever you want or to skip the last elem for car in cars[:-1]: # Do What Ever you want There are a few ways of doing this. for e in entries[1:]: print(e) This method creates a new list containing all the elements of entries except the first one, and then iterates over that. It's the clearest to read, but only works for lists (and tuples) and has all the problems of copying a list. iterator = iter(entries) next(iterator) for e in iterator: print(e) This method creates an iterator, discards the first item and then iterates over it. It's probably the fastest way of doing this,* but it's not very easy to read. for i, e in enumerate(entries): if i > 0: # or, if i: print(e) This method is not very fast at all, but it's easier to read than the second one. It's probably* worse than the first one, unless you really don't want to make a copy of the list for some reason. import itertools ... for e in itertools.islice(entries, 1, None): print(e) This is a version of 2 with all the readability benefits of 1. I'd say that this is probably the best method, but you're safest to go with 1 because it's what people will be expecting.

for vs while

Use for loops when there's a sequence of elements that you want to iterate. Use while loops when you want to repeat an action until a condition changes. The power of for loops comes from the fact that it can iterate over a sequence of any kind of data, not just a range of numbers. You can use for loops to iterate over a list of strings, such as usernames or lines in a file.

What is Get? - Computer Hope

While connected to another computer using an FTP, get is a command line command used to download a file or files from that computer.

parameters la functie

cand apelam functia punem parametrul in ghilimele

cand folosim return la o functie

cand vrem sa retinem ceva, sa il salvam mai tarziu pentru a-l folosi daca nu folosim return, fuctia nu returneaza nimic, face ce i se cere si nu retine nimic pentru mai tarziu Return values allow our functions to be more flexible and powerful, so they can be reused and called multiple times. Functions can even return multiple values. Just don't forget to store all returned values in variables! You could also have a function return nothing, in which case the function simply exits.

ca sa schimbi cod cu un alt programator

codepad.org genereaza linkuri pe care se salveaza codul, outputul si poti face schimbari de cod si retrimite

cum afli tipul de data?

cu type () function

return_string+=

def counter(start, stop): x = start if start>stop: return_string = "Counting down: " while x >= stop: return_string += str(x) if x>stop: return_string += "," x=x-1 else: return_string = "Counting up: " while x <= stop: return_string += str(x) if x<stop: return_string += "," x=x+1 return return_string print(counter(1, 10)) # Should be "Counting up: 1,2,3,4,5,6,7,8,9,10" print(counter(2, 1)) # Should be "Counting down: 2,1" print(counter(5, 5)) # Should be "Counting up: 5"

tipul de pe quizlet cu roate saptamanile in python

dojikerze

ce e parametrul unei functii

e practic o variabila, e x din f(x)

virgula in python in numere float

e punctul 47.2

python-libraries

https://data-flair.training/blogs/python-libraries/

official Python documentation.

https://docs.python.org/3/

The Python Language Reference- orice termen din p

https://docs.python.org/3/reference/index.html

unde sa cauti orice termen

https://docs.python.org/3/reference/index.html

The Python Tutorial

https://docs.python.org/3/tutorial/index.html

carte f buna

https://greenteapress.com/wp/think-python/

Subscribe to the Python tutor mailing list, where you can ask questions and collaborate with other Python learners

https://mail.python.org/mailman/listinfo/tutor

Subscribe to the Python-announce mailing list to read about the latest updates in the language.

https://mail.python.org/mailman3/lists/python-announce-list.python.org/

Search for answers or ask a question on

https://stackoverflow.com/

statistici si viitor

https://www.netguru.com/blog/future-of-python https://opensource.com/article/18/5/numbers-python-community-trends https://insights.stackoverflow.com/survey/2018#technology https://stackoverflow.blog/2017/09/06/incredible-growth-python/

the most popular online interpreters and codepads.

https://www.onlinegdb.com/online_python_interpreter https://repl.it/languages/python3 https://www.tutorialspoint.com/execute_python3_online.php https://rextester.com/l/python3_online_compiler https://trinket.io/python3

foarte fain lista de keywords

https://www.programiz.com/python-programming/keyword-list

cum schimbi un numar in string?

il pui in ghilimele sau cu str() e mai general, mai sigur sa folosesti str function, poti folosi variabile cu str, nu si cu ghilimele x=8 print("Numarul este:" + str(x)) print("Numarul este:" +"x") print("Numarul este:" +"8") print("Numarul este:" + 8) OUTPUT Numarul este:8 Numarul este:x Numarul este:8 Traceback (most recent call last): File "main.py", line 12, in <module> print("Numarul este:" + 8) TypeError: can only concatenate str (not "int") to str

de retinut la range for x in range(6): print(x)

in Python si in multe alte limbaje un range porneste de la 0 The range function can receive one, two or three parameters. If it receives one parameter, it will create a sequence one by one from zero until one less than the parameter received. If it receives two parameters, it will create a sequence one by one from the first parameter until one less than the second parameter. Finally, if it receives three parameters, it will create a sequence starting from the first number and moving towards the second number. But this time, the jumps between the numbers will be the size of the third number, and again, it will stop before the second number.

random module

includes library functions for working with random numbers randrange()Returns a random number between the given range randint()Returns a random number between the given range choice()Returns a random element from the given sequence choices()Returns a list with a random selection from the given sequence shuffle()Takes a sequence and returns the sequence in a random order random()Returns a random float number between 0 and 1 uniform()Returns a random float number between two given parameters

cum convertesti string to integer?

int()

cum se scrie un string in python

intre ghilimele

cum incarci module

mai intai intri in python in cmd cu python apoi import si modulul import requests

os

operating system There are actually two main parts in operating system: the kernel and the user space. The kernel is the main core of an operating system. As users, we don't interact with the kernel directly. Instead, we interact with the other part of the operating system called the user space. The User space is basically everything outside of the kernel. These are things that we interact with directly, like the system programs and user interface. The scripts we'll write will all run in the user space. In some cases though, our scripts may interact with the kernel of the operating system to get extra information or to ask it to perform certain operations. As you probably already know, there's a lot of different operating systems out there. The major operating systems using IT today are Windows, Mac OS, and Linux.

// floor division operator

partea intreaga din impartire 5//2 = 2

ca sa instalezi un modul

pip install si numele modului pip install requests

ca sa te tii la curent cu ce e nou

poti sa te abonezi la mailing list de python

cum recreezi o propozitie din cuvinte?

prin adunare + de stringuri, dar punand si spatii goale intre cuvinte

%modulus operator

restul de la impartire, nu ce e dupa virgula, ci restul 5%2 = 1

If you have Python installed on your computer, you can execute the interpreter by

running the python3 command (or just python on Windows), and you can close it by typing exit() or Ctrl-D

Whats the meaning of rolling out?

to make a new product, service, or system available for the first time: A media campaign is expected to roll out early next year. A feature rollout is the software development process of introducing a new feature to a set of users. In the not so recent past, software was rolled out once every week or two, with a number of changes being bundled together, and then monitored. What does rollout mean in business? The introduction of a new product

cum folosesti choice ca utilizatorul sa aleaga diverse optiuni de la tastatura

value1 = input("Please enter first integer:\n") value2 = input("Please enter second integer:\n") v1 = int(value1) v2 = int(value2) choice = input("Enter 1 for addition.\nEnter 2 for subtraction.\nEnter 3 for Multiplication.:\n") choice = int(choice) if choice == 1: print(f'You entered {v1} and {v2} and their addition is {v1 + v2}') elif choice == 2: print(f'You entered {v1} and {v2} and their subtraction is {v1 - v2}') elif choice == 3: print(f'You entered {v1} and {v2} and their multiplication is {v1 * v2}') else: print("Wrong Choice, terminating the program.") Conclusion It's very easy to take the user input in Python from the input() function. It's mostly used to provide choice of operation to the user and then alter the flow of the program accordingly. However, the program waits indefinitely for the user input. It would have been nice to have some timeout and default value in case the user doesn't enter the value in time.

cum ceri input de la tastatura?

variabila = input() raw_user_age = input("What is your age?") print(raw_user_age)