If it's not builtin, it must be imported from another module.>>> getattr(list, '__module__')
'__builtin__'
>>>

Use string method strip() to remove newline characters.
for line in lines:
filemenu.add_cascade(label=line.strip())

obj[:3] is a slice of the time.struct_time object. The asterisk preceding the list returned by the slice expands the list into individual elements. Example:>>> d = time.strptime('16/06/2010',...

I thought my use of enumerate() would give you enough information. Here's the code again with code to write to the Excel file (untested):print "\nLooping through the file, line by line."
workbook =...

Decide what types of objects that need to be converted. If needed, create a function to make each conversion type. An exception should occur on any failed conversion. If all conversions fail, return...

It appears that you omitted an operator:
yIntercept = y1 - (((y2 - y1)/(x2 - x1))(add operator here)(x1))

>>> s = 'XXXXX -\n\t XXXX'
>>> ''.join(s.split())
'XXXXX-XXXX'
>>>

Try this:
csv.reader(str(self[filename]).split('\n')The argument to csv.reader can be any iterable object that produces a string each time its next() method is called.

If I understand you correctly, there are several ways:

# Update the local namespace
>>> for i in range(25):
... exec "%s = %d" % ('var'+str(i), 0) in None

# Update the global namespace...