# Python 2.5.2

Version of implementation CPython of programming language Python

Bugfix release: over 100 bugs and patches have been addressed since Python 2.5.1, many of them improving the stability of the interpreter, and improving its portability.

## Examples:

### Hello, World! - Python (52):

``````print "Hello, World!"
``````

### Factorial - Python (53):

This example uses recursive factorial definition.

``````def factorial(n):
if n == 0:
return 1
else:
return n * factorial(n - 1)

for n in range(16 + 1):
print "%d! = %d" % (n, factorial(n))
``````

### Fibonacci numbers - Python (61):

This example uses recursive definition of Fibonacci numbers.

``````#! /usr/bin/env python
def fibonacci(n):
if n < 3:
return 1
else:
return fibonacci(n - 1) + fibonacci(n - 2)

for n in range(1, 16 + 1):
print "%i," % fibonacci(n) ,
print "..."
``````

### Factorial - Python (377):

This example uses iterative method of calculating factorials.

``````def factorial(n):
if n == 0:
return 1

f = 1
for i in range(1, n + 1):
f *= i
return f

for n in range(16 + 1):
print "%d! = %d" % (n, factorial(n))
``````