Useful Operators
We can use the Range function to create a range of numbers in a list instead of typing them manually
mylist = list(range(0,11))
for num in mylist:
if num % 2 == 0:
print(num)
else:
print('\n')
The Enumerate function will allow us to index items in a list and return them as tuples. We can then use tuple unpacking
my_letters = 'a','b','c'
# This is a basic for loop
for case in my_letters:
print(case)
#Here we use the enumerate function
for case in enumerate(my_letters):
print (case)
# Here we use the enumerate function with tuple unpacking
for i, letter in enumerate(my_letters):
print("At index {}, the letter is {}".format(i,letter))
The Zip function allows us to take multiple lists and zip them up into tuples
# First, lets make a list from these tuples
print(list(enumerate('x, y,z')))
mylist1 =list(range(1,6))
mylist2 = ['a','b','c','d','e']
# Here I am creating a new list that has the contents of the two lists
mylist3=list(zip(mylist1,mylist2))
# Lets use a for loop to iterate
for item1,item2 in zip(mylist1, mylist2):
print("For the number {} location the letter is {}".format(item1,item2))
# We can use the In operator for other things, such as checking to see if something is in something
print('x' in 'x-ray')
print(2 in [1,2,3])Random Numbers with Python
# Python has a builtin in random number generator, however we need to import
# This will import a shuffle function to scramble numbers around
from random import shuffle
shuffle(mylist)
print(mylist)
# We can use the randint to create a pyshdo-random number
from random import randint
my_random = randint(0,1000)
print(my_random)
Getting input from users
# If we want to get some input from the user we can used the input
intel = input('Enter something into this box: ')
print(intel)