Post Some Code!!!

# String Inversion and Palindrome Test Script
# author: Brett Kelly
# email: inkedmn@gmx.net
# version 1.0 - working

#!/usr/bin/env python

def reverseString(string):
    "reversing a string" 
    y = ""
    for i in range (0, len(string)):
        y = y + string[-i-1]
    return y

x = raw_input("Please enter a word: ")
print "The word you entered is", x
y = reverseString(x)
print "The reverse spelling is", y
if x == y :
    print x, "is a palindrome."
else:
    print x, "is not a palindrome."

# String Inversion and Palindrome Test Script
# author: Brett Kelly

import string
import sys

expr = sys.argv[1]

length = len(expr)
expr2 = ""

# create a string made up of the second half of expr, backwards
while length > len(expr) / 2:
	expr2 = expr2 + expr[length - 1 : length]
	length = length - 1

# cut expr in half
if len(expr) % 2 == 0:
	expr = expr[0 : len(expr) / 2]
else:
	expr = expr[0 : len(expr) / 2 + 1]

# compare
if expr == expr2:
	print 1
else:
	print 0

#!/usr/bin/env python

#get user input
string = raw_input()

#reverse the string
reversed = string[::-1]

#output results
print "The string you entered is", string
print "The string reversed is", reversed

#check if string is a palindrome
if string == reversed:
	print string, "is a palindrome."
else:
	print string, "is not a palindrome."

#wait before ending
raw_input("Click enter to exit..")

#!/usr/bin/env python

print "A simple calculator"

N1 = int(raw_input("Enter the first number: "))
OP = raw_input("Enter the operator: ")
N2 = int(raw_input("Enter the second number: "))

if OP == '+':
	answer = N1 + N2
	print answer
elif OP == '-':
	answer = N1 - N2
	print answer
elif OP == '*':
	answer = N1 * N2
	print answer
elif OP == '/':
	if N2 == 0:
		print "Can't divide by zero"
	else:
		answer =  N1 / N2
		print answer
elif OP == '%':
	if N2 == 0:
		print "Can't divide by zero"
	else:
		answer = N1 % N2
		print answer
elif OP == '**':
	answer = N1 ** N2
	print answer
else:
	print "Your operator isn't one that's recognized"

#!/usr/bin/env python

#calculator function
def cal(do):
	try:
		#try output results
		print eval(do)
	except ZeroDivisionError:
		#if ZeroDevisionError print error message
		print "Can't divide by zero"
	except:
		#if unexpected error occured print this
		print "Oops an error occured!"

#call calculator function with user input		
cal(raw_input("What would you like to do?"))

#wait before ending
raw_input("Click enter to exit..")

#!/usr/bin/env python

import os

#loop though all the objects in c:/books/
for filename in os.listdir('c:/books/'):
	#if filename is a file and fits the pattern
	if os.path.isfile('c:/books/' + filename) and ' - ' in filename and ',' in filename:
		#split the filename into [author, book]
		title = filename.split(' - ', 1)
		#if author's dir doesn't exist make it
		if not os.path.isdir('c:/books/' + title[0]):
			os.mkdir('c:/books/' + title[0])
		#move the books to the correct folder
		os.rename('c:/books/%s' % (filename), 'c:/books/%s/%s' % (title[0], filename))
print 'Finished'

#wait before ending
raw_input("Click enter to exit..")

>>> [x for x in os.listdir('.') if not x.startswith('.')]
['bin', 'code', 'deb', 'docs', 'misc', 'mp3', 'ogg', 'school', 'themes', 'wav', 'dcc', 'evolution', 'src', 'tmp', 'stuff-to-do', 'News', 'iso']
>>> eval('__import__("os").system("touch foo")')
0
>>> [x for x in os.listdir('.') if not x.startswith('.')]
['bin', 'code', 'deb', 'docs', 'misc', 'mp3', 'ogg', 'school', 'themes', 'wav', 'dcc', 'evolution', 'src', 'tmp', 'stuff-to-do', 'News', 'iso', 'foo']

run = 1
while run == 1:
	print "--------------------------------"
	print "--------------------------------"
	print "Welcome to the Leap Year Program"
	print "--------By Evan Patterson-------"
	print "--------------------------------"
	print

	# Menu
	print "Please select from the following:"
	print "1  Leap Year Tester"
	print "2  Behind the Scenes"

	function = input("> ")

	# The Tester 
	if function == 1:
		print "Enter the year that you want to be tested:"
		year = input("> ")
		yearstr = str(year)
	
		if year < 1:
			print "Please enter a year greater than 0."
			print
			print "Would you like to restart"
			print "1  Yes"
			print "0  No"
                        restart = input("> ")
                        if restart == 1:
                            print
                        else:
                            run = 0
		else: 
			if yearstr[-2:] == '00': 
				if (year % 400) == 0:
					print "This is a leap year."
					print
                                        print "Would you like to restart"
                                        print "1  Yes"
                                        print "0  No"
                                        restart = input("> ")
                                        if restart == 1:
                                            print
                                        else:
                                            run = 0
				else:
					print "This is not a leap year."
					print
                                        print "Would you like to restart"
                                        print "1  Yes"
                                        print "0  No"
                                        restart = input("> ")
                                        if restart == 1:
                                            print
                                        else:
                                            run = 0
			else:
				if (year % 4) == 0:
					print "This is a leap year."
					print
                                        print "Would you like to restart"
                                        print "1  Yes"
                                        print "0  No"
                                        restart = input("> ")
                                        if restart == 1:
                                            print
                                        else:
                                            run = 0
				else:
					print "This is not a leap year."
					print
                                        print "Would you like to restart"
                                        print "1  Yes"
                                        print "0  No"
                                        restart = input("> ")
                                        if restart == 1:
                                            print
                                        else:
                                            run = 0
		
	# Reasoning
	elif function == 2:
		print "Leap years occur in years exactly divisible by four, except that years ending in 00 are leap years only if they are divisible by 400. Pretty cool, huh...."
                print
                print "Would you like to restart"
                print "1  Yes"
                print "0  No"
                restart = input("> ")
                if restart == 1:
                    print
                else:
                    run = 0

	# Wrong Input at Menu
	else:
		print "Please enter 1 for the tester or 2 for the reasoning."
                print
                print "Would you like to restart"
                print "1  Yes"
                print "0  No"
                restart = input("> ")
                if restart == 1:
                    print
                else:
                    run = 0

#!/usr/bin/env python

year = int(raw_input("Enter a year: "))

if (year % 4) != 0:
	print "sorry", year, "is not a leap year"
else: 
	if (year % 100) == 0:
		if (year % 400) == 0:
			print "yes", year, "is a leap year"
		else:
			print "Sorry", year, "is not a leap year"
	else:
		print "yes", year, "is a leap year"