Nested list comprehension : Python tutorial 135

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This video is all about nested list comprehension.

[RaviKumar-dong]

Simply do like this:
print([list(range(1, 4)) for i in range(3)])

[chinmaydas]

Sir after completing please make full complete video series on Web developer in python.. Flask, Django..

[AniketKumar-bmgi]

Bhai aap bahut acha video banate ho.
Thank you.

[OmJoshi_]

good job buddies 👍 salute for your hard work

[tanishalakhotia]

your lectures are really amazing please R programming ki playlist bhi bna do

[manishverma]

# Normal method
myList1=[]
tempList=[]
for i in range(3):
tempList.clear()
for j in range(1, 4):
tempList.append(j)
myList1.append(tempList)
print(myList1)

[_VaibhavBaranwal]

Their must be some more exercises on list comprehension
and mainly on nested list...

[_itz.ricky._]

Can we use elif statement in list comprehension?

[Dopeboyz]

Can you compare or match a nested list with a flatten

[srikanthnaik]

a = [[1, 2, 3] for i in range(3)]
print(a)

[kunalsingh-ppgp]

Let me tell ya an easy way :-
a = [[ i for i in range(1, 4) ]]*3
Output :- [[1, 2, 3], [1, 2, 3], [1, 2, 3]]


Try to put that *3 between square brackets and see the output... Always try something new...

[joydeepbhandary]

if we are using 'i' in place of' j ' then how is it working correctly ..it should be wrng ... i mean how the nested loop working if both the variables are same

[naumanhaider]

Sir I have a question that if we want to make a list like
example=[ [1, 2, 3], [4, 5, 6], [7, 8, 9] ]
is it possible to make a list like this with nested comprehension?

[Shubham-djk]

# elif statement using list comprehenssion

numbers = [10, -5, 0, 3, -1, 8]
categories = ['positive' if num > 0 else 'negative' if num < 0 else 'zero' for num in numbers]
print(categories)

# output
['positive', 'negative', 'zero', 'positive', 'negative', 'positive']

# Explaination:
# 'positive' if num > 0: This is the if condition. If num > 0, it returns 'positive'.

# else 'negative' if num < 0: This part is the elif condition. If the first condition (num > 0) is False, then it checks whether num < 0. If num < 0 is True, it returns 'negative'.

# else 'zero': This is the else condition. If neither num > 0 nor num < 0 are True (meaning num == 0), it returns 'zero'.

[rojapolaki]

Is this list comprehension code work for all versions of python
Or
Only for 3.6

[sanjeevtudu]

what if I want to put different items in the list?

[m.mubashar]

is se to list k ander sub lists sb aik hi tarah ki hon gi

[nirock]

Newlist=[[1, 2, 3]] for i in range (3)
Print(newlist)

[tipsstudio]

sir what about make a list from user defined value, in list all values is integer. not string..


i tried to many time about this,
but i always got string value in list

give me solution about this..

[johnmartin]

how to acheieve with the below code matrix=[[1, 2, 32], 43, 4, [3, 7], [8]]

new_matrix=[]
for sublist in matrix:
if type(sublist) is list:
for j in sublist:
print(j)
new_matrix.append(j)
else:
new_matrix.append(sublist)


print(new_matrix) this is by simple way but cant do with comprehnsio help me here pls