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

5 votes203 views3 answers
How to run flask in port 80
Python Flask
1 vote146 views1 answer
Python lock using a file
Python
0 vote184 views1 answer
Validate delete inline formset django
Python Django
0 vote132 views1 answer
Turn numpy function into tensorflow
Python
0 vote130 views1 answer
Pandas merge query "_merge='left_only'"
Python
5 votes136 views2 answers
Compilador python online with numpy
Python
0 vote165 views1 answer
Python 3 rimuovere l'ultimo carattere da stringa
Python
0 vote153 views1 answer
Python check if hotkey pressed
Python
3 votes170 views2 answers
Django radio button
Python Django
-1 vote130 views1 answer
How to play mp3 file form pygame module
Python