Hi to all I have a question about the for statement of python. I have the
following piece of code where cachefilesSet is a set that contains the
names of 1398 html files cached on my hard disk
for fn in cachefilesSet:
fObj = codecs.open( baseDir + fn + '-header.html', 'r', 'iso-8859-1' )
u = fObj.read()
v = u.lower()
rows = v.split('\x0a')
contentType = ''
for r in rows:
if r.find('content-type') != -1:
y = r.find(':')
if y != -1:
z = r.find(';', y)
if z != -1:
contentType = r[y+1:z].strip()
cE = r[z+1:].strip()
characterEncoding = cE.strip('charset = ')
else:
contenType = r[y+1:].strip()
characterEncoding = ''
break
if contentType == 'text/html':
processHTMLfile( baseDir + fn + '-body.html', characterEncoding,
cardinalita )
fileCnt += 1
if fileCnt % 100 == 0: print fileCnt
this code stops at the 473th file instead of reaching 1398
however I changed the for and substituted it with a while in this way
while cachefilesSet:
fn = cachefilesSet.pop()
.......
.......
the while loop reaches the 1398th file and is some 3-4 times faster than
the for loop
How is this possible?
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