Is it possible to make a `for` loop without an iterator variable? (How can I make code loop a set number of times?)
for-loop, loops, python, range
Solution
Off the top of my head, no.
I think the best you could do is something like this:
def loop(f,n):
for i in xrange(n): f()
loop(lambda: <insert expression here>, 5)
But I think you can just live with the extra `i` variable.
Here is the option to use the `_` variable, which in reality, is just another variable.
for _ in range(n):
do_something()
Note that `_` is assigned the last result that returned in an interactive python session:
>>> 1+2
3
>>> _
3
For this reason, I would not use it in this manner. I am unaware of any idiom as mentioned by Ryan. It can mess up your interpreter.
>>> for _ in xrange(10): pass
...
>>> _
9
>>> 1+2
3
>>> _
9
And according to Python grammar, it is an acceptable variable name:
identifier ::= (letter|"_") (letter | digit | "_")*
Problem
Is it possible to do following without the `i`? ``` for i in range(some_number): # do something ``` If you just want to do something N amount of times and don't need the iterator.