$2$ Part $2$: Reading Code

Below is a function that can convert chemical formulas $($as strings$)$ to a more usable format. Make the code more readable by adding comments that describe the following:

#$1$ what are the inputs and outputs of this function? what types of variables or data structures are they?

#$2$ What is happeneing in this loop?

Documentation for pymatgen.core.composition is available

In $[]$: from pymatgen.core import Composition

def get$\_$atm$\_$fracs$($chemform$)$:

#$1\frac{?}{\text{b}\text{a}\text{r}}(T)OD0$

comp$\_$obj $=$ Composition$($chemform$)$

comp$\_$dict $=\{\}$

element$\_$space $=[Ti,Zr,Hf,V,Nb,Ta]$

for element in element$\_$space:

#$2$ TODO

comp$\_$dict$[$str$($element$)]=$ comp$\_$obj.get$\_$atomic$\_$fraction$($element$)$

return comp$\_$dict