In what cases there will not be 'hero_damage' in response of get_match_detail() call?

[zhouy1017]

I am working on about 5000 records of match details returned by get_match_detail call.
And I got some keyerrors due to in some [player] there is no 'hero_damage' key but in the document, there should always be 'hero_damage',right?

[joshuaduffy]

I assume this is dependant on if damage was actually accrued or not, if you use something like

if 'hero_damage' in dictionary:
    dmg  = dictionary['hero_damage']

You should be able to get at the key in a loop (if it exists) without any exceptions.