var myAlerts= [];
for(var i = 0: i < 5; i++)
     myAlerts.push( function inner() { alert(i); } )
myAlerts[0](); //5
myAlerts[1](); //5
myAlerts[2](); //5
myAlerts[3](); //5
myAlerts[4](); //5

>>> res = []
>>> for i in range(4):
...     res.append(lambda: i**2)
>>> res[0]()
9
>>> res[1]()
9

>>> for i in range(4):
...     res.append(lambda x=i: x**2)
...     
>>> res[0]()
0
>>> res[1]()
1