/Python/Declaring a numpy array with certain size

Declaring a numpy array with certain size

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

Similar codes

0 vote199 views1 answer
Get the positions of items of ser2 in ser1 as a list python
Python
0 vote158 views1 answer
Make screen shot of specific part of screen python
Python
1 vote167 views1 answer
Number table python
Python
0 vote267 views1 answer
How to search dictionaryfor lowest value
Python
0 vote178 views2 answers
Turtle keep window open
Python
1 vote170 views1 answer
Example XlsxWriter in Python
Python
0 vote193 views1 answer
Unable to locate package python-certbot-nginx
Python
0 vote167 views1 answer
<b> bold tag in python
Python
0 vote195 views1 answer
Python scipy moving average
Python
1 vote220 views1 answer
Use django taggit in template
Python Django