Empty array python

Python declare array of size n

>>> n = 5                     #length of list
>>> list = [None] * n         #populate list, length n with n entries "None"
>>> print(list)
[None, None, None, None, None]

>>> list.append(1)            #append 1 to right side of list
>>> list = list[-n:]          #redefine list as the last n elements of list
>>> print(list)
[None, None, None, None, 1]

>>> list.append(1)            #append 1 to right side of list
>>> list = list[-n:]          #redefine list as the last n elements of list
>>> print(list)
[None, None, None, 1, 1]

>>> list.append(1)            #append 1 to right side of list
>>> list = list[-n:]          #redefine list as the last n elements of list
>>> print(list)
[None, None, 1, 1, 1]

Source: stackoverflow.com

Empty array python

import numpy
my_array = numpy.zeros(shape=(row,column))

Similar codes

3 votes225 views1 answer
Python simple web app
Python
0 vote243 views1 answer
Renomear colunas pandas
Python
0 vote225 views1 answer
Minimumm sort tryed python
Python
13 votes201 views2 answers
Year to datetime python
Python
1 vote235 views1 answer
Pandas aggregate dataframe
Python
0 vote253 views1 answer
Date format django template filter
Python Django
4 votes233 views1 answer
Find ip address on local network ubuntu
Python
1 vote225 views1 answer
Tqdm parallel
Python
0 vote256 views1 answer
Python plot arrays from matrix
Python
0 vote239 views1 answer
Python is space
Python