/Python/Declare array with given size python

Declare array with given size 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

Declare array with given size python

#n is the desired length
a = [None] * n

Similar codes

0 vote42 views1 answer
Sklearn labelbinarizer in pipeline
Python
0 vote38 views2 answers
Flask socket io
Python
7 votes32 views3 answers
Calculate the same value in list i python
Python
0 vote40 views1 answer
Python not equal to operation
Python
0 vote34 views1 answer
Set select group of columns to numeric pandas
Python
0 vote40 views1 answer
Intall python3 in linux
Python
0 vote43 views1 answer
Python mouse listener
Python
1 vote39 views1 answer
Python typing optional
Python
4 votes35 views2 answers
One hot encoding python pandas
Python
3 votes44 views1 answer
Frozen
Python