On 10/06/2011 12:21 PM, lina wrote:
<snip>
As for splitting into functions, consider:
#these two are capitalized because they're intended to be constant
TOKENS = "BE"
LINESTOSKIP = 43
INFILEEXT = ".xpm"
OUTFILEEXT = ".txt"
def dofiles(topdirectory):
for filename in os.listdr(topdirectory):
processfile(filename)
def processfile(infilename):
base, ext =os.path.splitext(fileName)
if ext == INFILEEXT:
text = fetchonefiledata(infilename)
numcolumns = len(text[0])
results = {}
for ch in TOKENS:
results[ch] = [0] * numcolumns
for line in text:
line = line.strip()
for col, ch in enumerate(line):
if ch in tokens:
results[ch][col] += 1
I still have trouble understanding the results[ch][col] part.
Thanks ahead,
First ask yourself what results consists of. It's a dictionary, which
is a aggregate of pairs of key/value items. In each case the key is a
character, and the the value is a list of numbers.
So results[ch] is a particular value, in other words a list.
And results[ch] [col] is a particular item of the list, in other words,
and integer
If we use += 1 on that integer, we increment it by 1
Is that clear? if not, write a separate program to build such as
structure, and try printing out each level of item
print results["E"]
should display a list
print results["E"][0]
should display an integer
print results["E"][1]
print results["E"][2]
Does this help?
--
DaveA
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