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slice python

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Gr@Y_orphan_ViLL@in## answered on April 18, 2020 Popularity 10/10 Helpfulness 2/10

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The basic rules of slice are:
I'''
 The slice generates index/integers from - start, start + step, start +
step + step, and so on. All the numbers generated must be less than
the stop value when step is positive.'''
II'''  
 If step value is missing then by default is taken to be 1 '''
III'''
 If start value is missing and step is positive then start value is by default
taken as 0.'''
IV'''
 If stop value is missing and step is positive then start value is by
default taken to mean till you reach the ending index(including the
ending index)'''
V'''
 A negative step value means the numbers are generated in
backwards order i.e. from - start, then start - step, then start -step
-step and so on. All the numbers generated in negative step must
be greater than the stop value.'''
VI'''
 If start value is missing and step is negative then start value takes default
value -1'''
VII'''
 If stop value is missing and step is negative then stop value is by
default taken to be till you reach the first element(including the 0
index element)'''

Popularity 10/10 Helpfulness 2/10 Language python

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Tags: python slice

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Contributed on Mar 04 2022

Gr@Y_orphan_ViLL@in##

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slice notation python

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a[::-1]    # all items in the array, reversed
a[1::-1]   # the first two items, reversed
a[:-3:-1]  # the last two items, reversed
a[-3::-1]  # everything except the last two items, reversed

Popularity 9/10 Helpfulness 4/10 Language python

Source: stackoverflow.com

Tags: notation notatio

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Contributed on Nov 22 2021

Adorable Antelope

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python slice

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# array[start:stop:step]

# start = include everything STARTING AT this idx (inclusive)
# stop = include everything BEFORE this idx (exclusive)
# step = (can be ommitted) difference between each idx in the sequence

arr = ['a', 'b', 'c', 'd', 'e']

arr[2:] => ['c', 'd', 'e']

arr[:4] => ['a', 'b', 'c', 'd']

arr[2:4] => ['c', 'd']

arr[0:5:2] => ['a', 'c', 'e']

arr[:] => makes copy of arr

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Contributed on Jun 09 2020

QuietHumility

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python slice

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				+---+---+---+---+---+---+
                | P | y | t | h | o | n |
                +---+---+---+---+---+---+
Slice position: 0   1   2   3   4   5   6
Index position:   0   1   2   3   4   5

>>> p = ['P','y','t','h','o','n']
# Why the two sets of numbers:
# indexing gives items, not lists
>>> p[0]
 'P'
>>> p[5]
 'n'

# Slicing gives lists
>>> p[0:1]
 ['P']
>>> p[0:2]
 ['P','y']

Popularity 10/10 Helpfulness 3/10 Language whatever

Source: stackoverflow.com

Tags: python py

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Contributed on Feb 09 2023

slapp kuk

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slicing in python

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word = "Example"

# Obtain the first 3 characters of "Example"
# E x a m p l e
# 0 1 2 3 4 5 6
# First 3 characters = "Exa"
sliced_word = word[:3] # Gives you "Exa"

# Everything after character #3 = "mple"
second_sliced_word = word[3:] # Gives you "mple"

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Contributed on Apr 18 2020

Joyiscode

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slicing in python

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In Python, we perform slicing using the following syntax: [start: end].
fruits = ["Banana", "Orange", "Lemon", "Apple", "Mango"]
sliced_fruits = fruits[1:3]
print(sliced_fruits) # ["Orange", "Lemon"]
Slicing in Python is very flexible. If we want to select the first n elements 
of a list or the last n elements in a list, we could use the following code:
fruits[:n]
fruits[-n:]
fruits = ["Banana", "Orange", "Lemon", "Apple", "Mango"]
print(fruits[:3])
# ["Banana", "Orange", "Lemon"]
print(fruits[-2:])
# ["Apple", "Mango"]

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Contributed on Aug 11 2022

Shirshak Kandel

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slice notation python

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a[start:stop:step] # start through not past stop, by step

Popularity 8/10 Helpfulness 2/10 Language python

Source: stackoverflow.com

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Contributed on Nov 22 2021

Adorable Antelope

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python slice

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l = ["a", "b", "c", "d", "e", "f", "g", "h", "i"]
x = slice(3)
print(l[x])
#gets the first three elemnets from list(array) l.

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Contributed on Jul 31 2022

Javasper

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python slicing

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-1

#slicig
b=("hello world")
print(b[2:])

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Contributed on Jan 25 2022

Beautiful Bear

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Python Slicing

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# Accessing tuple elements using slicing
my_tuple = ('p','r','o','g','r','a','m','i','z')

# elements 2nd to 4th
# Output: ('r', 'o', 'g')
print(my_tuple[1:4])

# elements beginning to 2nd
# Output: ('p', 'r')
print(my_tuple[:-7])

# elements 8th to end
# Output: ('i', 'z')
print(my_tuple[7:])

# elements beginning to end
# Output: ('p', 'r', 'o', 'g', 'r', 'a', 'm', 'i', 'z')
print(my_tuple[:])

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Contributed on May 26 2022

SAMER SAEID

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slice python

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