apply patch to html_fibo.py

html_fibo.patch

--- html_fibo.orig	2011-08-01 12:51:29.063696436 +0900
+++ html_fibo.py	2011-08-01 12:50:58.703267469 +0900
@@ -2,6 +2,8 @@
 The most complicate ever way to produce an HTML list of fibonacci numbers
 """
 
+import gc
+
 def fibo():
     a, b = 1, 1
     while True:
@@ -26,8 +28,10 @@
             tag = HtmlTag(f, 4, 'li')
             yield n
             tag = None
+            gc.collect()
     finally:
         tag = None
+        gc.collect()
         f.write('</ul>\n')
 
 
@@ -37,6 +41,8 @@
         f.write('%d' % n)
         if n > 100:
             break
+    gc.collect()
+    f.close()
     
 def main():
     write_file()

patched_html_fibo.py

"""
The most complicate ever way to produce an HTML list of fibonacci numbers
"""

import gc

def fibo():
    a, b = 1, 1
    while True:
        yield a
        a, b = b, a+b


class HtmlTag(object):
    def __init__(self, f, indent, tag):
        self.f = f
        self.tag = tag
        self.f.write(' ' * indent)
        self.f.write('<%s>' % tag)

    def __del__(self):
        self.f.write('</%s>\n' % self.tag)

def html_fibo(f):
    f.write('<ul>\n')
    try:
        for n in fibo():
            tag = HtmlTag(f, 4, 'li')
            yield n
            tag = None
            gc.collect()
    finally:
        tag = None
        gc.collect()
        f.write('</ul>\n')


def write_file():
    f = open('fibo.txt', 'w')
    for n in html_fibo(f):
        f.write('%d' % n)
        if n > 100:
            break
    gc.collect()
    f.close()
    
def main():
    write_file()
    content = open('fibo.txt').read()
    print content

if __name__ == '__main__':
    main()