2+2

2*2

2/2

2-2

9.0/2.0

type(2)

type(2.0)

type('2')

x = 2
print(x)

x = x + 1
print(x)

#if you want to write x = x+1 shorthand. This is common when you want to write loops in functions. 
x = 2
x += 1
print(x)

x*7

x/x

x-2

x+1

X = 1
x = 2
print(X)
print(x)

colorofmycar = 'red'
print(colorofmycar)

name = 'henry'
lastname = 'bernreuter'
print(name + lastname)

name[0]

name[4]

lastname[0]

lastname[9]

all_letters = 'abcdefghijklmnopqrstuvwxyz'
all_letters[7]+all_letters[4]+all_letters[13]+all_letters[17]+all_letters[24]

#list out all letters from the first position to the last position
all_letters[0:25]

#list out all the letters from the first positions ot the third position
all_letters[0:3]

all_letters[:]

all_letters[:25]

all_letters[0:]

all_letters[0::1]

all_letters[0::2]

all_letters[::-1]

#to find the length of string we can use a function. More about what functions are further down.
len(all_letters)

#another great str function is upper to use it name the string and .upper. You can research many more str functions 

all_letters.upper()

#To split a string into other strings
new_string = 'This is my name Henry Bernreuter'
new_string.split()

#Count how many e's are in a str
new_string.count('e')

#Find something specific at a specific place in a str
new_string.find('Henry')

#Replace a word in a string with another word
new_string.replace('This','That')

print("My name is", name)

#If you want to print on two sepereate lines use an escape clause
print('My name is \n',name)

#Now write a program that asks what you name is
first_name = input('What is your first name: ')
last_name = input('What is your last name: ')
print('Your full name is',first_name,last_name)

def whats_your_name():
    first_name = input('What is your first name: ')
    last_name = input('What is your last name: ')
    print('Your full name is',first_name,last_name)
    return

#now lets call the function. It just like the print() function.
whats_your_name()

list_1 = [1,2,3,'four','five','six']

#list are like strings as they are indexed the same way.
list_1[3]

list_1[:3]

list_1[3:]

#add to the list
list_1 = list_1 + [7,8,9]
list_1

#mulitple the list
list_1 *2

#How to change an element in a list. This will change 'four' to 4
list_1[3] = 4
print(list_1)

#apend the list
list_1.append('ten')
print(list_1)

#append the list at a specific index point, in this case we will inser 'one' at the index location one.
list_1.insert(1,'one')
print(list_1)

#to delete something from the list
del list_1[1]
print(list_1)

#remove something if you do not know where it is
list_1.remove('ten')
print(list_1)

num_list = [1,2,3,4,5]
letter_list = ['a','b','c','d','e']
tuple_1 = zip(num_list,letter_list)
result = list(tuple_1)
print(result)
result[1]

len(result)

result *2

d_keys = range(26)
d_values = list('abcdefghijklmnopqrstuvwxyz')
dic = dict(zip(d_keys,d_values))
dic

#locate the object at position 25
dic[25]

#Change the object at postiion 25
dic[25] = '0'
dic[25]

#Delete the object at position 20
del dic[20]
dic

#want to ask if something is in a dictionary we can use the get() function. 
#it works like this nameofdicionary.get('key_value_you_are_searching_for','the_value_you_want_if_its_not_in_there')
d = {'first_name': 'henry','last_name': 'bernreuter','location' : 'Atlanta'}
d

#Its a good idea to add message indicating that the value is not there.
#In case you are searching with a loop. (more on that later)
d.get('name','its not here boss')

d.get('first_name')

#If you want to add a key to your dictionary
d.setdefault('state', 'Georgia')
d

light = 'red'
if light == 'red': #IF you see this
    print("Stop")#do this

light = 'green'
if light == 'red': #IF you see this
    print('stop')#do this
elif light == 'green':#Else IF you see this
    print('go')#do this
else:#IF you see nothing else 
    print("These lights are not working")#do this

light = 'red'
if light == 'red': #IF you see this
    print('stop')#do this
elif light == 'green':#Else IF you see this
    print('go')#do this
else:#IF you see nothing else 
    print("These lights are not working")#do this

light = 'yellow'
if light == 'red': #IF you see this
    print('stop')#do this
elif light == 'green':#Else IF you see this
    print('go')#do this
else:#IF you see nothing else 
    print("These lights are not working")#do this

num_list = range(10)
for all_the_numbers in num_list:
    print(all_the_numbers)

#Here we can combine everything we have learned to make a Christmas tree.

count_spaces = 34
start_count = 0
while count_spaces > 0 and start_count < 33 :
        print('\33[1;32;48m'+' '*count_spaces+'*'+'*'*start_count+'\33[0m')
        count_spaces -= 1
        start_count += 2
for christmas_tree in range(3):
    print(' '*33,'||')
print(' '*32, end = '\====/')
print('')