#!/usr/bin/python

# Required header that tells the browser how to render the text.
print "Content-Type: text/plain\n"

# Print a simple message to the display window.
print "Hello, World!\n" 





#!/usr/bin/python

# Print the required header that tells the browser how to render the text.
print "Content-Type: text/plain\n"

# Initialize a few variables.
first = 5
middle = 7.5
last = 10

# Print the values.
print "first:", first
print "middle:", middle
print "last:", last





#!/usr/bin/python

# Print the required header that tells the browser how to render the text.
print "Content-Type: text/plain\n"


# Initialize a few variables.
first, middle, last = 5, 7.5, 10

# Print the values.
print "first:", first
print "middle:", middle
print "last:", last, "\n"

# Swap the values.
first, last = last, first

# Print the values.
print "first:", first
print "last:", last, "\n"

# Right associative assignment.
first = last = middle

# Print the values.
print "first:", first
print "middle:", middle
print "last:", last




#!/usr/bin/python

# Print the required header that tells the browser how to render the text.
print "Content-Type: text/plain\n"

# Integer division resulting in a truncated value.
a = 5/2

# Print the value.
print "5/2 =", a

# Decimal division.
a = 5/2.0

# Print the value.
print "5/2.0 =", a, "\n"

# String addition and multiplication.
python_words = "python is" + 3*" really" + " neat."

# Print the string.
print python_words, "\n"

# Print parts of the string.
print "The first character is:", python_words[0]
print "The last character is:", python_words[-1]
print "In the middle is: \n", python_words[1:-1]






#!/usr/bin/python

# Print the required header that tells the browser how to render the text.
print "Content-Type: text/plain\n"

# Initialize a few variables.
first_name = "Louis"
last_name = "" # Empty String
age = 21.5

# Test for name.
if (first_name and last_name):

  print "Hello,", first_name, last_name

  print "It is good to see you, Mr.", last_name
elif first_name: 
  print "Hello,", first_name
else:

  print "Who are you?"

# Test for age.
if (age >= 21):

  print "You can drink!"
else:

  print "No drinks for you!"






#!/usr/bin/python

# Print the required header that tells the browser how to render the text.
print "Content-Type: text/plain\n"

# Initialize a counting variable.
counter = 1

# Print the even numbers from 1 to 10.
while (counter <= 10):

  if ((counter%2) == 0):

        print counter

  counter = counter +1

print "Finished."





#!/usr/bin/python

# Print the required header that tells the browser how to render the text.
print "Content-Type: text/plain\n"

# List of integers.
numbers = [0, 1, 2]

# Print iterations using numbers.
for count in numbers:

  print "iteration", count

# Print iterations using range(3).
for count in range(3):

  print "iteration", count







#!/usr/bin/python

# Print the required header that tells the browser how to render the text.
print "Content-Type: text/plain\n\n"

# Define a function with default argument 'age' = 21.
def display_vars (first_name, last_name, age = 21):

  print (first_name, last_name, age)

# Call the function with all positionals.
display_vars("John", "Smith", 22)

# Call the function with all keywords.
display_vars(last_name = "Smith", first_name = "John", age = 22)

# Call the function with incomplete args; default age used.
display_vars("John", "Smith")





#!/usr/bin/python

# Print the required header that tells the browser how to render the text.
print "Content-Type: text/plain\n\n"

# Define a global variable gender = "female".
gender = "female"

# Define a function.

def display_vars (first_name, last_name, age):
  print (first_name, last_name, age, gender)

# Define a function that calls 'display_vars' with intended local 'gender'.

def go_display():
  gender = "male"
  display_vars("John", "Smith", 22)

# Call the function 'go_display'.
go_display()







#!/usr/bin/python

# Print the required header that tells the browser how to render the text.
print "Content-Type: text/plain\n\n"

# Import the outside class.
from exclass import simple_data

# Use default constructors to create 'simple_data' objects.
store = simple_data()
item = simple_data()

# Assign them values.
store.set_name("Super Store")
item.set_name("Month supply of tissue")

# Print the values.
store.display_name()
item.display_name()

exclass.py:

# Define the class object
class simple_data:

# Define member functions

  def set_name(self, info): 
        self.name = info 
  def display_name(self): 
        print self.name