Python List Functions

Python List functions do quite a job for simple tasks. Though I would recommend Numpy arrays if the application is required to be efficient. Go through the functions available to work on Python Lists

from sys import getsizeof

print("create list")

a = ['a','b']

print(a)

print("space allocated")

print(getsizeof(a))

print(getsizeof(a[0]))

print(getsizeof(a[1]))

print("add element to list")

a.append('c')

print(a)

print("add element at a specific location")

a.insert(1, 'd')

print(a)

print("add list at the end of a list")

print(a+['e', 'f'])

a.extend(['e','f'])

print(a)

print("remove an element")

(a.remove('e')) if 'e' in a else (print("not in list"))

print(a)

print("index of an element using index function")

(print(a.index('e'))) if 'e' in a else (print("not in list"))

try:

print(a.index('e'))

except ValueError:

print("Value Error")

print("find length of a")

print(len(a))

print("assigning to other variable")

b = a

print("Now both a and b point to the same list.")

print("replicating a list")

import copy

c = copy.copy(a)

print(a)

print(c)

d = ['a', ('a', 'b'), ['a', 'b'], {'a', 'b'}]

e = copy.copy(d[1][1])

print(d)

print(e)

f = copy.deepcopy(d[1][1])

print(f)

print("sort using sort()")

print(a)

a.sort()

print(a)

print("reverse")

print(a)

a.reverse()

print(a)

print("pop last")

print(a)

a.pop()

print(a)

print("pop second element")

print(a)

a.pop(1)

print(a)