dict and list comprehension in python

comprehension.py

#!/usr/bin/env python3

# my reference list
nums = [1,2,3,4,5,6,7,8,9,10]

# 'n' for each 'n' in nums list
my_list = []
for n in nums:
    my_list.append(n)
print(my_list)

# using list comprehension
my_list = [n for n in nums]
print(my_list)

# 'n'^2 for each 'n' in nums
my_list = []
for n in nums:
    my_list.append(n*n)
print(my_list)

# using list comprehension
my_list = [n*n for n in nums]
print(my_list)

# 'n' for each 'n' in nums if 'n' is even
my_list = []
for n in nums:
    if n%2 == 0:
        my_list.append(n)
print(my_list)

# using list comprehension
my_list = [n for n in nums if n%2 == 0]
print(my_list)

# two more reference lists
first_name = ['Daniel', 'Greg', 'George', 'Justin']
last_name = ['Brown', 'Nilchee', 'Smith', 'Bielber']

# create a dict('first_name': 'last_name') based on the above lists
my_dict = {}
for first, last in zip(first_name, last_name):
    my_dict[first] = last
print(my_dict)

# using dict comprehension
my_dict = {first: last for first, last in zip (first_name, last_name)}
print(my_dict)