What does [:-1] mean/do in python? - Stack Overflow

Working on a python assignment and was curious as to what [:-1] means in the context of the following code: instructions = f.readline()[:-1] Have searched on here on S.O. and on Google but to no avail. Would love an explanation!

Posjeti visit

Vaša pretraga i ovaj rezultat

  • Ovaj pojam pretrage se pojavljuje u rezultatu: 1 python means
  • Web stranica odgovara jednom ili više vaših pojmova pretrage
  • Druge web stranice koje sadrže vaše pojmove pretrage povezuju na ovaj rezultat
  • Rezultat je na Hrvatski
Python Slicing – How to Slice an Array and What Does [::-1] Mean?

Here, we specify a start of index 2, no end, and a step of -1. Slicing here will start from index 2 which is 3. The negative steps mean the next value in the slice will be at an index smaller than the previous index by 1. This means 2 - 1 which is 1 so the value at this index, which is 2 will be added to the slice.

Posjeti visit

Vaša pretraga i ovaj rezultat

  • Ovaj pojam pretrage se pojavljuje u rezultatu: 1 python means
  • Web stranica odgovara jednom ili više vaših pojmova pretrage
  • Druge web stranice koje sadrže vaše pojmove pretrage povezuju na ovaj rezultat
  • Rezultat je na Hrvatski
1] in Python with Examples - Guru99

Role of slicing in Python. In simpler words, a slice means to cut something. It allows dicing a list in python. Here, how slicing is important in Python: ... Example of 1 in Python. Slicing or indexing can be employed to extract a smaller list from a more extensive list. Similarly, it can be used to extract a substring from a larger string.

Posjeti visit

Vaša pretraga i ovaj rezultat

  • Ovaj pojam pretrage se pojavljuje u rezultatu: 1 python means
  • Web stranica odgovara jednom ili više vaših pojmova pretrage
  • Druge web stranice koje sadrže vaše pojmove pretrage povezuju na ovaj rezultat
  • Rezultat je na Hrvatski
What Does 'do' Do in Python - Online Tutorials Library

Discover the functionality and purpose of the 'do' statement in Python programming. Learn how it can be utilized effectively in your code. ... step] # slicing from 1st to last in steps of 1 in reverse order arr[::-1] Remember, negative number for step means "in reverse order". Let us now see examples ?

Posjeti visit

Vaša pretraga i ovaj rezultat

  • Ovaj pojam pretrage se pojavljuje u rezultatu: 1 python means
  • Web stranica odgovara jednom ili više vaših pojmova pretrage
  • Druge web stranice koje sadrže vaše pojmove pretrage povezuju na ovaj rezultat
  • Rezultat je na Hrvatski
Python Operators - W3Schools

Sets each bit to 1 if both bits are 1: x & y: Try it » | OR: Sets each bit to 1 if one of two bits is 1: x | y: Try it » ^ XOR: Sets each bit to 1 if only one of two bits is 1: x ^ y: Try it » ~ NOT: Inverts all the bits ~x: Try it » << Zero fill left shift: Shift left by pushing zeros in from the right and let the leftmost bits fall off: x ...

Posjeti visit

Vaša pretraga i ovaj rezultat

  • Ovaj pojam pretrage se pojavljuje u rezultatu: 1 python means
  • Web stranica odgovara jednom ili više vaših pojmova pretrage
  • Druge web stranice koje sadrže vaše pojmove pretrage povezuju na ovaj rezultat
  • Rezultat je na Hrvatski
Python String question: What does [::-1] mean? - Sololearn

If you leave slots empty, there's a default. [:] means: The whole thing. [::1] means: Start at the beginning, end when it ends, walk in steps of 1 (which is the default, so you don't even need to write it). [::-1] means: Start at the end (the minus does that for you), end when nothing's left and walk backwards by 1. ... In Python, the syntax ...

Posjeti visit

Vaša pretraga i ovaj rezultat

  • Ovaj pojam pretrage se pojavljuje u rezultatu: 1 python means
  • Web stranica odgovara jednom ili više vaših pojmova pretrage
  • Druge web stranice koje sadrže vaše pojmove pretrage povezuju na ovaj rezultat
  • Rezultat je na Hrvatski
Python Operators Cheat Sheet - LearnPython.com

Python Comparison Operators. Comparison operators are used to compare two values.They return a Boolean value (True or False) based on the comparison result.These operators are often used in conjunction with if/else statements in order to control the flow of a program. For example, the code block below allows the user to select an option from a menu:

Posjeti visit

Vaša pretraga i ovaj rezultat

  • Ovaj pojam pretrage se pojavljuje u rezultatu: 1 python means
  • Web stranica odgovara jednom ili više vaših pojmova pretrage
  • Druge web stranice koje sadrže vaše pojmove pretrage povezuju na ovaj rezultat
  • Rezultat je na Hrvatski
string - What does n [::-1] means in Python? - Stack Overflow

This is explained nicely in Understanding slice notation, in the Python docs under "extended slicing", and in this blogpost: Python Slice Examples: Start, Stop and Step Share Improve this answer

Posjeti visit

Vaša pretraga i ovaj rezultat

  • Ovaj pojam pretrage se pojavljuje u rezultatu: 1 python means
  • Web stranica odgovara jednom ili više vaših pojmova pretrage
  • Druge web stranice koje sadrže vaše pojmove pretrage povezuju na ovaj rezultat
  • Rezultat je na Hrvatski
What Does :: Mean in Python? Operator Meaning for Double Colon

You can use the double colon (::) in Python to slice or extract elements in a collection such as a list or string. In this article, you'll learn the syntax and how to use :: to slice a list in Python. You'll also learn how to use the parameters associated with this method of slicing. Python Double Colon (::) Syntax

Posjeti visit

Vaša pretraga i ovaj rezultat

  • Ovaj pojam pretrage se pojavljuje u rezultatu: 1 python means
  • Web stranica odgovara jednom ili više vaših pojmova pretrage
  • Druge web stranice koje sadrže vaše pojmove pretrage povezuju na ovaj rezultat
  • Rezultat je na Hrvatski
What is the meaning of "int(a[::-1])" in Python? - Stack Overflow

Now the indexing here and also the step count, support negative numbers. So, if you give a -1 index, it translates to len(a)-1 index. And if you give -x as the step count, then it would step every x'th value from the start index, till the stop index in the reverse direction. For example. a = '1234' print a[3:0:-1] This would return . 432

Posjeti visit

Vaša pretraga i ovaj rezultat

  • Ovaj pojam pretrage se pojavljuje u rezultatu: 1 python means
  • Web stranica odgovara jednom ili više vaših pojmova pretrage
  • Druge web stranice koje sadrže vaše pojmove pretrage povezuju na ovaj rezultat
  • Rezultat je na Hrvatski