iterating over list with one mising value
d at davea.name
Tue Feb 7 09:46:12 EST 2012
On 02/07/2012 07:27 AM, Sammy Danso wrote:
> Hello experts,
> I am having trouble accessing the content of my list.
> my list content has 2-pair value with the exception of one which has single value. here is an example ['a', 1, 'b', 1, 'c', 3, 'd']
> I am unable to iterate through list to access invidual value pairs
> I get an error message saying ' the list should more than 1 value pairs'. I guess because 'd' has no value. How do I solve this problem?
> Your help would be much appreciated.
The real answer is to figure out how it gets into that state. Is the
input file invalid? Or you have a device that sometimes skips one?
But if you're stuck with the data in that list:
If the list is of odd size, truncate it. Then your loop should not run
into an uneven pair.
Of course if you actually posted the code, or even the real and complete
error message, we might be able to make other suggestions.
More information about the Python-list