clarification

[Laurent Pointal]

Thomas Jollans a écrit :
> On Friday 17 August 2007, Beema shafreen wrote:
>> hi everybody,
>> i have a file with data separated by tab
>> mydata:
>> fhl1    fkh2
<zip>
>> shows these two are separated by tab represented as columns
>> i have to check the common data between these two coloumn1 an coloumn2
>> my code:
>> data = []
>> data1 = []
>> result = []
>> fh = open('sheet1','r')
>> for line in fh.readlines():
>>         splitted = line.strip().split('\t')
>>         data.append(splitted[0])
>>         data1.append(splitted[1])
>>         for k in data:
>>                 if k in data1:
>>                         result.append(k)
>>                         print result
>> fh.close()

Use set data type for data and data1 (you fill them with an algo like th 
one you wrote - just use add() in place of appen()) then use set 
intersection to get common data.

See doc for set data type:
http://docs.python.org/lib/types-set.html

Would look like (not tested):
data = set()
data1 = set()
fh = open('sheet1','r')
for line in fh.readlines():
     splitted = line.strip().split('\t')
     data.add(splitted[0])
     data1.add(splitted[1])

result = data.intersection(data1)