# Show a simple message.
print("I like climbing mountains.")

import os

# Show a simple message.
print("I like climbing mountains.")

# Clear the screen.
os.system('clear')

# Greeter is a terminal application that greets old friends warmly,
#   and remembers new friends.

# Display a title bar.
print("\t**********************************************")
print("\t***  Greeter - Hello old and new friends!  ***")
print("\t**********************************************")

# Greeter is a terminal application that greets old friends warmly,
#   and remembers new friends.

# Display a title bar.
print("\t**********************************************")
print("\t***  Greeter - Hello old and new friends!  ***")
print("\t**********************************************")

# Display a bunch of output, representing a long-running program.
for x in range(0,51):
    print("\nWe have done %d fun and interesting things together!" % x)

# Import the sleep function.
from time import sleep

print("I'm going to sleep now.")

# Sleep for 3 seconds.
sleep(3)

print("I woke up!")

from time import sleep

# Greeter is a terminal application that greets old friends warmly,
#   and remembers new friends.

# Display a title bar.
print("\t**********************************************")
print("\t***  Greeter - Hello old and new friends!  ***")
print("\t**********************************************")

# Print a bunch of information, in short intervals
names = ['aaron', 'brenda', 'cyrene', 'david', 'eric']

# Print each name 5 times.
for name in names:
    # Pause for 1 second between batches, and then skip two lines.
    sleep(1)
    print("\n\n")
    
    for x in range(0,5):
        print(name.title())

from time import sleep
import os

# Greeter is a terminal application that greets old friends warmly,
#   and remembers new friends.

# Display a title bar.
print("\t**********************************************")
print("\t***  Greeter - Hello old and new friends!  ***")
print("\t**********************************************")

# Print a bunch of information, in short intervals
names = ['aaron', 'brenda', 'cyrene', 'david', 'eric']

# Print each name 5 times.
for name in names:
    # Clear the screen before listing names.
    os.system('clear')
    
    # Display the title bar.
    print("\t**********************************************")
    print("\t***  Greeter - Hello old and new friends!  ***")
    print("\t**********************************************")

    print("\n\n")
    for x in range(0,5):
        print(name.title())
    
    # Pause for 1 second between batches.
    sleep(1)

from time import sleep
import os

# Greeter is a terminal application that greets old friends warmly,
#   and remembers new friends.

def display_title_bar():
    # Clears the terminal screen, and displays a title bar.
    os.system('clear')
              
    print("\t**********************************************")
    print("\t***  Greeter - Hello old and new friends!  ***")
    print("\t**********************************************")
    

# Print a bunch of information, in short intervals
names = ['aaron', 'brenda', 'cyrene', 'david', 'eric']

# Print each name 5 times.
for name in names:
    display_title_bar()

    print("\n\n")
    for x in range(0,5):
        print(name.title())
    
    # Pause for 1 second between batches.
    sleep(1)

from time import sleep
import os

# Greeter is a terminal application that greets old friends warmly,
#   and remembers new friends.


### FUNCTIONS ###

def display_title_bar():
    # Clears the terminal screen, and displays a title bar.
    os.system('clear')
              
    print("\t**********************************************")
    print("\t***  Greeter - Hello old and new friends!  ***")
    print("\t**********************************************")
    

### MAIN PROGRAM ###    

# Print a bunch of information, in short intervals
names = ['aaron', 'brenda', 'cyrene', 'david', 'eric']

# Print each name 5 times.
for name in names:
    display_title_bar()

    print("\n\n")
    for x in range(0,5):
        print(name.title())
    
    # Pause for 1 second between batches.
    sleep(1)

import os

# Greeter is a terminal application that greets old friends warmly,
#   and remembers new friends.


### FUNCTIONS ###

def display_title_bar():
    # Clears the terminal screen, and displays a title bar.
    os.system('clear')
              
    print("\t**********************************************")
    print("\t***  Greeter - Hello old and new friends!  ***")
    print("\t**********************************************")
    

### MAIN PROGRAM ###

# Set up a loop where users can choose what they'd like to do.
choice = ''
while choice != 'q':    
    display_title_bar()
    
    # Let users know what they can do.
    print("\n[1] See a list of friends.")
    print("[2] Tell me about someone new.")
    print("[q] Quit.")
    
    choice = input("What would you like to do? ")
    
    # Respond to the user's choice.
    if choice == '1':
        print("\nHere are the people I know.\n")
    elif choice == '2':
        print("\nI can't wait to meet this person!\n")
    elif choice == 'q':
        print("\nThanks for playing. Bye.")
    else:
        print("\nI didn't understand that choice.\n")

import os

# Greeter is a terminal application that greets old friends warmly,
#   and remembers new friends.


### FUNCTIONS ###

def display_title_bar():
    # Clears the terminal screen, and displays a title bar.
    os.system('clear')
              
    print("\t**********************************************")
    print("\t***  Greeter - Hello old and new friends!  ***")
    print("\t**********************************************")
    

### MAIN PROGRAM ###

# Set up a loop where users can choose what they'd like to do.
choice = ''
display_title_bar()
while choice != 'q':    
    
    # Let users know what they can do.
    print("\n[1] See a list of friends.")
    print("[2] Tell me about someone new.")
    print("[q] Quit.")
    
    choice = input("What would you like to do? ")
    
    # Respond to the user's choice.
    display_title_bar()
    if choice == '1':
        print("\nHere are the people I know.\n")
    elif choice == '2':
        print("\nI can't wait to meet this person!\n")
    elif choice == 'q':
        print("\nThanks for playing. Bye.")
    else:
        print("\nI didn't understand that choice.\n")

import os

# Greeter is a terminal application that greets old friends warmly,
#   and remembers new friends.


### FUNCTIONS ###

def display_title_bar():
    # Clears the terminal screen, and displays a title bar.
    os.system('clear')
              
    print("\t**********************************************")
    print("\t***  Greeter - Hello old and new friends!  ***")
    print("\t**********************************************")
    
def get_user_choice():
    # Let users know what they can do.
    print("\n[1] See a list of friends.")
    print("[2] Tell me about someone new.")
    print("[q] Quit.")
    
    return input("What would you like to do? ")
    

### MAIN PROGRAM ###

# Set up a loop where users can choose what they'd like to do.
choice = ''
display_title_bar()
while choice != 'q':    
    
    choice = get_user_choice()
    
    # Respond to the user's choice.
    display_title_bar()
    if choice == '1':
        print("\nHere are the people I know.\n")
    elif choice == '2':
        print("\nI can't wait to meet this person!\n")
    elif choice == 'q':
        print("\nThanks for playing. Bye.")
    else:
        print("\nI didn't understand that choice.\n")


import os

# Greeter is a terminal application that greets old friends warmly,
#   and remembers new friends.


### FUNCTIONS ###

def display_title_bar():
    # Clears the terminal screen, and displays a title bar.
    os.system('clear')
              
    print("\t**********************************************")
    print("\t***  Greeter - Hello old and new friends!  ***")
    print("\t**********************************************")
    
def get_user_choice():
    # Let users know what they can do.
    print("\n[1] See a list of friends.")
    print("[2] Tell me about someone new.")
    print("[q] Quit.")
    
    return input("What would you like to do? ")
    

### MAIN PROGRAM ###

# Set up a loop where users can choose what they'd like to do.
names = []

choice = ''
display_title_bar()
while choice != 'q':    
    
    choice = get_user_choice()
    
    # Respond to the user's choice.
    display_title_bar()
    if choice == '1':
        print("\nHere are the people I know.\n")
        for name in names:
            print(name.title())
    elif choice == '2':
        new_name = input("\nPlease tell me this person's name: ")
        names.append(new_name)
        print("\nI'm so happy to know %s!\n" % new_name.title())
    elif choice == 'q':
        print("\nThanks for playing. Bye.")
    else:
        print("\nI didn't understand that choice.\n")

import os

# Greeter is a terminal application that greets old friends warmly,
#   and remembers new friends.


### FUNCTIONS ###

def display_title_bar():
    # Clears the terminal screen, and displays a title bar.
    os.system('clear')
              
    print("\t**********************************************")
    print("\t***  Greeter - Hello old and new friends!  ***")
    print("\t**********************************************")
    
def get_user_choice():
    # Let users know what they can do.
    print("\n[1] See a list of friends.")
    print("[2] Tell me about someone new.")
    print("[q] Quit.")
    
    return input("What would you like to do? ")
    
def show_names():
    # Shows the names of everyone who is already in the list.
    print("\nHere are the people I know.\n")
    for name in names:
        print(name.title())
        
def get_new_name():
    # Asks the user for a new name, and stores the name.
    new_name = input("\nPlease tell me this person's name: ")
    names.append(new_name)
    print("\nI'm so happy to know %s!\n" % new_name.title())

### MAIN PROGRAM ###

# Set up a loop where users can choose what they'd like to do.
names = []

choice = ''
display_title_bar()
while choice != 'q':    
    
    choice = get_user_choice()
    
    # Respond to the user's choice.
    display_title_bar()
    if choice == '1':
        show_names()
    elif choice == '2':
        get_new_name()
    elif choice == 'q':
        print("\nThanks for playing. Bye.")
    else:
        print("\nI didn't understand that choice.\n")

import os

# Greeter is a terminal application that greets old friends warmly,
#   and remembers new friends.


### FUNCTIONS ###

def display_title_bar():
    # Clears the terminal screen, and displays a title bar.
    os.system('clear')
              
    print("\t**********************************************")
    print("\t***  Greeter - Hello old and new friends!  ***")
    print("\t**********************************************")
    
def get_user_choice():
    # Let users know what they can do.
    print("\n[1] See a list of friends.")
    print("[2] Tell me about someone new.")
    print("[q] Quit.")
    
    return input("What would you like to do? ")
    
def show_names():
    # Shows the names of everyone who is already in the list.
    print("\nHere are the people I know.\n")
    for name in names:
        print(name.title())
        
def get_new_name():
    # Asks the user for a new name, and stores the name if we don't already
    #  know about this person.
    new_name = input("\nPlease tell me this person's name: ")
    if new_name in names:
        print("\n%s is an old friend! Thank you, though." % new_name.title())
    else:
        names.append(new_name)
        print("\nI'm so happy to know %s!\n" % new_name.title())

### MAIN PROGRAM ###

# Set up a loop where users can choose what they'd like to do.
names = []

choice = ''
display_title_bar()
while choice != 'q':    
    
    choice = get_user_choice()
    
    # Respond to the user's choice.
    display_title_bar()
    if choice == '1':
        show_names()
    elif choice == '2':
        get_new_name()
    elif choice == 'q':
        print("\nThanks for playing. Bye.")
    else:
        print("\nI didn't understand that choice.\n")

import pickle

# This program asks the user for some animals, and stores them.

# Make an empty list to store new animals in.
animals = []

# Create a loop that lets users store new animals.
new_animal = ''
while new_animal != 'quit':
    print("\nPlease tell me a new animal to remember.")
    new_animal = input("Enter 'quit' to quit: ")
    if new_animal != 'quit':
        animals.append(new_animal)

# Try to save the animals to the file 'animals.pydata'.
try:
    file_object = open('animals.pydata', 'wb')
    pickle.dump(animals, file_object)
    file_object.close()
    
    print("\nI will remember the following animals: ")
    for animal in animals:
        print(animal)
except Exception as e:
    print(e)
    print("\nI couldn't figure out how to store the animals. Sorry.")

import pickle

# This program asks the user for some animals, and stores them.
#  It loads animals if they exist.

# Try to load animals. If they don't exist, make an empty list
#  to store new animals in.
try:
    file_object = open('animals.pydata', 'rb')
    animals = pickle.load(file_object)
    file_object.close()
except:
    animals = []

# Show the animals that are stored so far.
if len(animals) > 0:
    print("I know the following animals: ")
    for animal in animals:
        print(animal)
else:
    print("I don't know any animals yet.")

# Create a loop that lets users store new animals.
new_animal = ''
while new_animal != 'quit':
    print("\nPlease tell me a new animal to remember.")
    new_animal = input("Enter 'quit' to quit: ")
    if new_animal != 'quit':
        animals.append(new_animal)

# Try to save the animals to the file 'animals.pydata'.
try:
    file_object = open('animals.pydata', 'wb')
    pickle.dump(animals, file_object)
    file_object.close()
    
    print("\nI will remember the following animals: ")
    for animal in animals:
        print(animal)
except Exception as e:
    print(e)
    print("\nI couldn't figure out how to store the animals. Sorry.")

import os
import pickle

# Greeter is a terminal application that greets old friends warmly,
#   and remembers new friends.


### FUNCTIONS ###

def display_title_bar():
    # Clears the terminal screen, and displays a title bar.
    os.system('clear')
              
    print("\t**********************************************")
    print("\t***  Greeter - Hello old and new friends!  ***")
    print("\t**********************************************")
    
def get_user_choice():
    # Let users know what they can do.
    print("\n[1] See a list of friends.")
    print("[2] Tell me about someone new.")
    print("[q] Quit.")
    
    return input("What would you like to do? ")
    
def show_names():
    # Shows the names of everyone who is already in the list.
    print("\nHere are the people I know.\n")
    for name in names:
        print(name.title())
        
def get_new_name():
    # Asks the user for a new name, and stores the name if we don't already
    #  know about this person.
    new_name = input("\nPlease tell me this person's name: ")
    if new_name in names:
        print("\n%s is an old friend! Thank you, though." % new_name.title())
    else:
        names.append(new_name)
        print("\nI'm so happy to know %s!\n" % new_name.title())
        
def load_names():
    # This function loads names from a file, and puts them in the list 'names'.
    #  If the file doesn't exist, it creates an empty list.
    try:
        file_object = open('names.pydata', 'rb')
        names = pickle.load(file_object)
        file_object.close()
        return names
    except Exception as e:
        print(e)
        return []
        
def quit():
    # This function dumps the names into a file, and prints a quit message.
    try:
        file_object = open('names.pydata', 'wb')
        pickle.dump(names, file_object)
        file_object.close()
        print("\nThanks for playing. I will remember these good friends.")
    except Exception as e:
        print("\nThanks for playing. I won't be able to remember these names.")
        print(e)
        
### MAIN PROGRAM ###

# Set up a loop where users can choose what they'd like to do.
names = load_names()

choice = ''
display_title_bar()
while choice != 'q':    
    
    choice = get_user_choice()
    
    # Respond to the user's choice.
    display_title_bar()
    if choice == '1':
        show_names()
    elif choice == '2':
        get_new_name()
    elif choice == 'q':
        quit()
        print("\nThanks for playing. Bye.")
    else:
        print("\nI didn't understand that choice.\n")