List Append using for loop PYTHON : I am trying to get a list of elements using a for loop to index my previous list. Here's the code: `for index in range(1,810):
    list.extend(t[index])
    list.extend(t[index+1])
    list.extend(t[index])`
I already a list named "list" and t is an older list.
To be more specific i want to make my list like this. t1,t2,t1,t2,t3,t2,t3,t4 etc.
I get this error TypeError: 'float' object is not iterable
Any help? Thanks!