Setting Up Your Development Environment(Chapter 1 of Gray Hat Python)

 

 1 >>> from ctypes import *
 2 >>> c_int()
 3 c_long(0)
 4 >>> c_char_p("hello world!")
 5 c_char_p('hello world!')
 6 >>> c_ushort(-5)
 7 c_ushort(65531)
 8 >>> seitz = c_char_p("loves python")
 9 >>> print seitz
10 c_char_p('loves python')
11 >>> print seitz.value
12 loves python

 

 

 from ctypes import *
2 
3 msvcrt = cdll.msvcrt
4 message_string = "Hello world!\n"
5 msvcrt.printf("Testing: %s", message_string)

 

 1 from ctypes import *
 2 
 3 class barley_amount(Union):
 4     _fields_ = [
 5                 ("barley_long", c_long),
 6                 ("barley_int", c_int),
 7                 ("barley_char", c_char * 8),
 8                 ]
 9     
10 value = raw_input("Enter the amount of barley of put into the beer vat:")
11 my_barley = barley_amount(int(value))
12 print "Barley amount as a long: %ld" % my_barley.barley_long
13 print "Barley amount as a int: %d" % my_barley.barley_int
14 print "Barley amount as a char: %s" % my_barley.barley_char