python size of array code example

Example 1: 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]

Example 2: size array python

size = len(myList)

Example 3: python get array length

# To get the length of a Python array, use 'len()'
a = arr.array(‘d’, [1.1, 2.1, 3.1])
len(a) # Output: 3

Example 4: find array length python

array = [1, 2, 3, 4, 5]
print(len(arr))

Example 5: find array length in python

a=arr.array('d', [1.1 , 2.1 ,3.1] )
len(a)