Python：从mysql中选择合适的类型

Question

How to manage the following:

listing = db.query("SELECT list_id FROM results limit 10")

returns a list containing values converted to long type : ({'list_id': 175L},...)

element = db.query("SELECT * FROM list LIMIT 1")

returns returns a single element which has a standard int id : element['id'] = 175

Now i would like to do something like this:

if element['id'] not in listing:
   print "ok"

But the loop is never entered. I think it is because of the different types in the list (long) and element (int).

Is there a quick and simple solution to solve this problem?

Thanks

Answer 1

Your first query returns list of dictionaries. You are trying to find a value in dictionary. Here is correct way how to iterate through keys in a dictionary:

for name, age in list.iteritems():
    if age == search_age:
        print name

Taken from here: Get key by value in dictionary